chemical reaction Crossword Puzzles

Chemical Reaction Glossary 2023-02-02

Chemical Reaction Glossary crossword puzzle

Across

the tiny pieces that all matter-all the stuff in the world-is made of.
reaction a process in which atoms rearrange to form new substances.
formula letters and numbers showing the types and number of atoms that repeat to make up a substance.
structure a structure formed by repeating groups of atoms linked together in a large network.
a group of atoms joined together in a particular way.
to change the order or position of something.
something that can be observed about a substance, such as color, smell, or boiling point.

Down

able to cause damage.
point the temperature at which a substance changes from the liquid phase to the gas phase.
something that is made of all the same atoms or groups of atoms.
a substance that is added to soil to help plants grow.
a starting substance that is part of a chemical reaction.
point the temperature at which a substance changes from the solid phase to the liquid phase.
an object, diagram, or computer program that helps us understand something by making it simpler or easier to see.
the relative size of things.
an ending substance that is made during a chemical reaction.

16 Clues: able to cause damage. • the relative size of things. • to change the order or position of something. • a group of atoms joined together in a particular way. • a substance that is added to soil to help plants grow. • a starting substance that is part of a chemical reaction. • an ending substance that is made during a chemical reaction. • ...

Chemical Reaction Vocabulary 2025-11-16

Chemical Reaction Vocabulary crossword puzzle

Across

a group of atoms joined together in a particular way
the tiny pieces that all matter is made of
an object diagram or computer program that helps us understand something by making it simpler or easier to see
an ending substance that is made during a chemical reaction
the temperature at which a substance changes from the solid phase to the liquid phase
a process in which atoms rearrange to form new substances
a substance that is added to soil to help plants grow
to change the order or position of something

Down

something that is made of all the same atoms or groups of atoms
a starting substance that is part of a chemical reaction
able to cause damage
the temperature at which a substance changes from the liquid phase to the gas phase
the relative size of things
letters and numbers showing the types and number of atoms that repeat to make up a substance
something that can be observed about a substance, such as color smell or boiling point

15 Clues: able to cause damage • the relative size of things • the tiny pieces that all matter is made of • to change the order or position of something • a group of atoms joined together in a particular way • a substance that is added to soil to help plants grow • a starting substance that is part of a chemical reaction • ...

Chapter 12 Vocabulary crossword 2023-04-06

Chapter 12 Vocabulary crossword crossword puzzle

Across

the direction of a reversible reaction is favored
a series of simple reactions that represent the progress of the overall reaction at the molecular level
A state of balance
substance that speeds up the rate of a chemical reaction
chemical law stating that the rate of a reaction is proportional to the concentration of the reacting substances
a high-energy intermediate state of the reactants during a chemical reaction that must be achieved for the reaction to proceed
Energy needed to get a reaction started
the rate at which reactants change into products over time

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A system in which no matter is allowed to enter or leave
value that expresses how far the reaction proceeds before reaching equilibrium. A small number means that equilibrium is towards the reactants side while a large number means that the equilibrium is towards the product side
When a change is experienced by a chemical system in equilibrium, the system will adjust to partially offset the change
Expression used to determine the unknown equilibrium concentrations. It describes the relationship of the products relative to the reactants in a chemical equilibrium system.
shows the energy of reactants and products during the course of a reaction
describes a reaction that involves only one particle that goes on to form products
a transitional structure that results from an effective collision and that persists while old bonds are breaking and new bonds are forming
A type of biological protein that speeds up a chemical reaction in a living thing
the step-by-step sequence of reactions by which the overall chemical change occurs
an elementary step in a reaction that involves two particles, either the same species or different, that collide and go on to form products

18 Clues: A state of balance • Energy needed to get a reaction started • the direction of a reversible reaction is favored • A system in which no matter is allowed to enter or leave • substance that speeds up the rate of a chemical reaction • the rate at which reactants change into products over time • shows the energy of reactants and products during the course of a reaction • ...

Crossword Puzzle 7A and 7B key terms 2024-01-10

Crossword Puzzle 7A and 7B key terms crossword puzzle

Across

A combination of chemical formulas and symbols that models a chemical reaction.
A chemical reaction in which a single reactant breaks down into two or more products.
SI fundamental unit for the quantity of matter in a substance; a count equal to 6.022 x 2023.
A substance that enters into a chemical reaction.
A positive or negative number showing the electric charge on an element when it forms a compound.

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A chemical reaction in which one element in a compound is replaced by another element; also known as a single-displacement reaction.
A chemical reaction in which two compounds swap cations or anions with each other; also know as a double-displacement reaction.
A gain of electrons in a chemical reaction.
A chemical reaction in which two or more reactants combine into a single, more complex product.
A substance that is formed during a chemical reaction.
The mass of one mole of a substance.
A process that rearranges the atoms in one or more substances into one or more new substances.
An exothermic reaction in which a fuel reacts with oxygen.
A number placed in front of a chemical formula within a chemical equation that shows how many units of a reactant or product are needed to balance the chemical equation.

14 Clues: The mass of one mole of a substance. • A gain of electrons in a chemical reaction. • A substance that enters into a chemical reaction. • A substance that is formed during a chemical reaction. • An exothermic reaction in which a fuel reacts with oxygen. • A combination of chemical formulas and symbols that models a chemical reaction. • ...

Crossword 2024-09-16

Across

- Hydrocarbon with at least one triple bond, e.g., ethyne.
- Process in which a substance gains electrons during a reaction.
- Describes elements that emit radiation due to unstable nuclei.
- Substance formed as a result of a chemical reaction.
- A type of chemical reaction where two or more substances combine to form a new compound.
Bond - Electrostatic attraction between oppositely charged ions.
- Simple hydrocarbon with the formula CH4, a major component of natural gas.
- Method used to determine the concentration of a solution.
- Substance that dissolves a solute to form a solution.
- Hydrocarbon with single bonds only, e.g., methane or ethane.
- Measure of how acidic or basic a solution is.
- Ionic compound formed from the reaction of an acid and a base.
- Time required for half of the radioactive nuclei in a sample to decay.
- Technique used to separate mixtures into their individual components.
Bond - Chemical bond formed by the sharing of electrons between atoms.
- Hydrocarbon with the formula C2H4, used in the production of plastics.
- Large molecule made up of repeating subunits called monomers.
- A chemical process that uses electricity to break down compounds.

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- Reaction between an acid and a base to form water and a salt.
- Substance that is dissolved in a solvent.
- Small molecule that can join together with other monomers to form a polymer.
- Chemical process for hardening rubber.
- Technique used to measure the interaction of light with matter to determine chemical composition.
Agent - Substance that gains electrons and is reduced in a redox reaction.
Acid - Organic compound that serves as the building block of proteins.
- Solution that resists changes in pH when acids or bases are added.
- Process in which a substance loses electrons during a reaction.
- A chemical reaction that involves the burning of a substance in oxygen to produce heat and light.
- Related to the chemistry of electron transfer processes.
- Substance that donates protons (H+ ions) in a reaction.
- Substance that undergoes change during a chemical reaction.
- Substance that speeds up a chemical reaction without being consumed.
- A type of reaction where a compound breaks down into simpler substances.
- Common polymer used in plastic bags and bottles.
Agent - Substance that loses electrons and is oxidized in a redox reaction.
- Substance that accepts protons (H+ ions) or donates hydroxide ions (OH-).
- Solid formed from a chemical reaction in a solution.
- Organic compound consisting only of hydrogen and carbon.
- Hydrocarbon with at least one double bond, e.g., ethene.
- Molecules with the same molecular formula but different structures.

40 Clues: - Chemical process for hardening rubber. • - Substance that is dissolved in a solvent. • - Measure of how acidic or basic a solution is. • - Common polymer used in plastic bags and bottles. • - Substance formed as a result of a chemical reaction. • - Solid formed from a chemical reaction in a solution. • - Substance that dissolves a solute to form a solution. • ...

CrossWord - Chemistry 2021-07-16

Across

law of __ mass.
In a chemical reaction ___ are shown to the right of the arrow.
all mineral acids except __ acid are strong acids.
What does the symbol (aq) represent in a chemical equation
We can balance an equation by adding a __ in front of symbols.
rusting of iron is __ reaction.
the reaction between an acid and a base is called ___ reaction.
plaster of paris changes to _ on mixing with water

Down

acids have __ taste?
Chemical name of sugarcane?
white silver chloride changes into ___ colour when exposed to sunlight
___ reaction in which two or more substance combine to form a new single substance.
The phenomenon due to which metal are slowly eaten away by the reaction of air , water and chemical presence in the atmosphere .
Oxide of which element is used as major ingredient in cement
The reactions which involve the use of electrical energy for the decomposition of the reactant molecules is called ?
Respiration is example of _ reaction?
To protect tooth decay we are advised to brush our teeth regularly . The nature of the toothpaste is ___.
Dilute acid does not produce carbon dioxide on being treated with
inventory A tool is used to determine if a chemical reaction is balanced or unbalanced.
sodium hydroxide turns phenolphthalein solution into __ colour.

20 Clues: law of __ mass. • acids have __ taste? • Chemical name of sugarcane? • rusting of iron is __ reaction. • Respiration is example of _ reaction? • all mineral acids except __ acid are strong acids. • plaster of paris changes to _ on mixing with water • What does the symbol (aq) represent in a chemical equation • Oxide of which element is used as major ingredient in cement • ...

chapter 5 2022-05-05

Across

the amount of one material in a certain volume of another material
a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
energy, the minimum amount of energy needed to start a chemical reaction
a material that decreases the rate of a reaction
change, any change that alters the form or appearance of a substance but does no change it into another’s substance
a chemical reaction that breaks down compounds into simpler products
of Conservation of mass, the principle that the total amount of matter is neither created nor destroyed during any chemical or physical change
change, a change in matter that produces one or more new substances

Down

a reaction in which one emmental replaces another in a compound or when two events in different compounds trade places
reaction, a reaction that absorbs energy
a material that increases the rate of a reaction by lowering the activation energy
a chemical reaction in which two or more simple substances combine to form a new (more complex) substance
a type of protein that speeds up a chemical reaction in a living thing (a biological catalyst that lowers the activation energy of reactions in cells
substances that undergo the chemical change
reaction, a reaction that releases energy (usually in the form of heat)
the new substances that form

16 Clues: the new substances that form • reaction, a reaction that absorbs energy • substances that undergo the chemical change • a material that decreases the rate of a reaction • the amount of one material in a certain volume of another material • change, a change in matter that produces one or more new substances • ...

Chapter 5 2022-05-04

Across

change, a change in matter that produces one or more new substances
the amount of one material in a certain volume of another material
of Conservation of mass, the principle that the total amount of matter is neither created not destroyed during any chemical or physical change
reaction, a reaction that releases energy (usually in the form of heat)
reaction, a reaction that absorbs energy
a reaction in which one emmental replaces another in a compound or when two events in different compounds trade places
a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
a chemical reaction in which two or more simple substances combine to form a new (more complex) substance

Down

the new substances that form
energy, the minimum amount of energy needed to start a chemical reaction
a material that decreases the rate of a reaction
a material that increases the rate of a reaction by lowering the activation energy
a chemical reaction that breaks down compounds into simpler products
change, any change that alters the form or appearance of a substance but does no change it into another’s substance
a type of protein that speeds up a chemical reaction in a living thing (a biological catalyst that lowers the activation energy of reactions in cells
substances that undergo the chemical change

Science Vocab chapter 4 2018-10-25

Science Vocab chapter 4 crossword puzzle

Across

the new substances that form.
occurs when compounds break down into simpler products.
increases the reaction rate by lowering the activation energy needed.
matter does not enter or leave
a solid that forms from liquids during a chemical reaction.
substances that undergo the chemical changes.
matter can enter from or escape to the surroundings.
more energy is required to break the bonds of the reactants than is released by the formation of the products.
any change that alters the form or appearance of a substance but does not change it into another substance.
A material used to decrease the rate of a chemical reaction is an...

Down

states that during a chemical reaction matter is not created or destroyed.
a number placed in front of a chemical formula in an equation.
A change in matter that produces one or more new substances.
the minimum amount of energy needed to start a chemical reaction.
the energy released as the products form is greater than the energy required to break the bonds of the reactants.
in chemistry when two or more elements or compounds combine to make a more complex substance, the reaction is classified as...
the cells in your body contain thousands of biological catalysts called...
a way to show a chemical reaction, using symbols instead of words.
the amount of a substance in a given volume.
when one element replaces another element in a compound, or if two elements in different compounds trade places, the reaction is a replacement.

20 Clues: the new substances that form. • matter does not enter or leave • the amount of a substance in a given volume. • substances that undergo the chemical changes. • matter can enter from or escape to the surroundings. • occurs when compounds break down into simpler products. • a solid that forms from liquids during a chemical reaction. • ...

Chemical Reactions 2022-01-06

Across

substance that undergoes a chemical change
reaction that absorbs energy
reaction that makes new substances
reaction that releases energy
exchange of ions between two compounds
shorthand way to show a chemical reaction

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reaction combining 2 elements to make a new, more complex compound
substances that result from a chemical reaction
reaction where atoms of one element take the place of another element
substance that changes the rate of a chemical reaction
reaction when a compound burns in oxygen
state where a chemical reaction and its reverse are happening at the same time and rate
reaction where a compound is broken down to 2 simpler substances

13 Clues: reaction that absorbs energy • reaction that releases energy • reaction that makes new substances • exchange of ions between two compounds • reaction when a compound burns in oxygen • shorthand way to show a chemical reaction • substance that undergoes a chemical change • substances that result from a chemical reaction • ...

Glossary 2016-10-23

Across

a chemical reaction that releases energy
a reaction of an acid with a base, forming salt and water
a rapid reaction with oxygen that releases energy in the form of heat/light
simple written description of what is happening in a reaction
a chemical reaction that absorbs energy
chemicals produced in a chemical reaction. They are written on the right hand side of the arrow
a chemical reaction that has the same numbers of each atom on both sides of the arrow.
a way of protecting aluminium from corrosion, by deliberately creating a layer of aluminium oxide over it
a type of sugar produced by photosynthesis

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a rain that has acids such as nitric acid and sulfuric dissolved in it
a green chemical found in chloroplasts of green plants, needed to carry out photosynthesis
Hydrated Iron (III)
a reaction that uses oxygen to release energy stored in glucose
single celled organisms that live in water, They are an important store of carbon or carbon sink
combustion that occurs when there is plenty of oxygen, it produces carbon dioxide and water vapour
a process in which chemicals move, caused by different concentrations of the chemical
a biological catalyst that speeds up the reaction
the breakdown of metals due to their reaction with other chemicals.

18 Clues: Hydrated Iron (III) • a chemical reaction that absorbs energy • a chemical reaction that releases energy • a type of sugar produced by photosynthesis • a biological catalyst that speeds up the reaction • a reaction of an acid with a base, forming salt and water • simple written description of what is happening in a reaction • ...

Chapter 7 vocab 2023-01-03

Across

- the mass of one mole of a substance
- substances that undergo change in a chemical reaction
- a chemical reaction in which a compound breaks down into two or more simpler substances
- a chemical reaction that absorbs energy from its surroundings
- the energy stored in chemical bonds
- an amount of a substance that contains approximately 6.02 x 1023 particles of the substance

Down

reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
reaction - a chemical reaction in which one element takes the place of another element in a compound
- a chemical reaction that releases energy to its surroundings
- new substances formed as a result of a chemical reaction
- a representation of a chemical reaction in which the reactants and products are expressed as formulas
- a chemical reaction in which two or more substances react to form a single substance
- numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

13 Clues: - the mass of one mole of a substance • - the energy stored in chemical bonds • - substances that undergo change in a chemical reaction • - new substances formed as a result of a chemical reaction • - a chemical reaction that releases energy to its surroundings • - a chemical reaction that absorbs energy from its surroundings • ...

Tom's Crossword Puzzle 2016-05-19

Across

Energy Released during nuclear fission.
Can be dissolved in water.
Energy When something moves it produces kinetic energy.
An electromagnetic wave of high energy and a short wavelength.
Reaction A chemical reaction that releases energy by light or heat.
Reaction Reaction in which the systems absorbs the energy from its surroundings.
Cannot be dissolved in water.
Substances that are slippery to the touch.
Allowing light but not shapes to pass through.
Of Reaction The substances that result from the recombination of atoms.
Not able to be seen through.
Variable The variable that is being tested, can be changed by the independent variable.

Down

An electromotive force expressed in volts.
Easy to see through, light goes through.
Invisible rays that are a part of energy that comes from the sun.
A substance that takes part in change during a reaction.
Variable The variable that is changed or controlled.
Substances with chemical properties that dissolve metal.
Reaction A chemical reaction where a compound and an oxidant is reacted to produce heat and a new product.
Reaction One atom or compound steals electrons from another atom or compound.
Of Constant Proportions A chemical compound always contains the same elements combined together in the same proportion by mass.
Power from a physical or chemical source.
Waves An electromagnetic wave of frequency that comes from a radio.

23 Clues: Can be dissolved in water. • Not able to be seen through. • Cannot be dissolved in water. • Energy Released during nuclear fission. • Easy to see through, light goes through. • Power from a physical or chemical source. • An electromotive force expressed in volts. • Substances that are slippery to the touch. • Allowing light but not shapes to pass through. • ...

Chemistry Crossword 2017-11-12

Across

cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance.
orbit of electrons around the nucleus of an atom.
change that results when two or more substances react to create a different substance, the new substance have completely different properties from the original one.
group 2 elements in the periodic table.
number of protons in the nucleus of one atom of an element.
chemical reaction that releases energy.
measure of atomic mass 1 amu is equal to 1/12th of an atom.
the smallest part of an element that is representative of that element.

Down

chemical reaction that absorbs energy.
principle that matter is not created or destroyed in a chemical reaction, the mass of the products always equals the mass of the reactants.
an experiment in which all reactants and all products of a chemical reaction are accounted for.
chemical combination of two or more elements in a specific ratio.
chemical reaction that takes place in cells.
chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy.
slow chemical change that occurs when oxygen in the air reacts with a metal.
description of how a substance interacts with other substances.
a reaction that takes place when two or more substances react to form new substances.
catalyst involved in chemical reaction in living things.
change of state from a liquid to a gas.
combination of symbols that represent a compound.
group 1 elements in the periodic table, not including hydrogen.
ability of a substance to conduct electricity or heat.
invisible negatively charged particle that orbits the nucleus of an atom
pure substance that cannot be broken down into other substances, substance made up of only one type of atom.
substances that helps a chemical reaction to proceed more quickly.
mass of one atom of an element calculated from the total number of protons neutrons and electrons.

26 Clues: chemical reaction that absorbs energy. • group 2 elements in the periodic table. • chemical reaction that releases energy. • change of state from a liquid to a gas. • chemical reaction that takes place in cells. • orbit of electrons around the nucleus of an atom. • combination of symbols that represent a compound. • ...

Science Vocab chapter 4 2018-10-25

Across

the new substances that form.
a solid that forms from liquids during a chemical reaction.
A change in matter that produces one or more new substances.
any change that alters the form or appearance of a substance but does not change it into another substance.
substances that undergo the chemical changes.
states that during a chemical reaction matter is not created or destroyed.
matter does not enter or leave

Down

when one element replaces another element in a compound, or if two elements in different compounds trade places, the reaction is a replacement.
a number placed in front of a chemical formula in an equation.
more energy is required to break the bonds of the reactants than is released by the formation of the products.
a way to show a chemical reaction, using symbols instead of words.
the cells in your body contain thousands of biological catalysts called...
A material used to decrease the rate of a chemical reaction is an...
the energy released as the products form is greater than the energy required to break the bonds of the reactants.
the minimum amount of energy needed to start a chemical reaction.
the amount of a substance in a given volume.
occurs when compounds break down into simpler products.
matter can enter from or escape to the surroundings.
increases the reaction rate by lowering the activation energy needed.
in chemistry when two or more elements or compounds combine to make a more complex substance, the reaction is classified as...

Tom's Crossword Puzzle 2016-05-19

Across

Waves An electromagnetic wave of frequency that comes from a radio.
Not able to be seen through.
Energy When something moves it produces kinetic energy.
Cannot be dissolved in water.
Invisible rays that are a part of energy that comes from the sun.
Can be dissolved in water.
Variable The variable that is being tested, can be changed by the independent variable.
A substance that takes part in change during a reaction.
Substances with chemical properties that dissolve metal.
Easy to see through, light goes through.
Energy Released during nuclear fission.

Down

Reaction One atom or compound steals electrons from another atom or compound.
Power from a physical or chemical source.
An electromotive force expressed in volts.
Reaction A chemical reaction that releases energy by light or heat.
Of Reaction The substances that result from the recombination of atoms.
Of Constant Proportions A chemical compound always contains the same elements combined together in the same proportion by mass.
Variable The variable that is changed or controlled.
Allowing light but not shapes to pass through.
An electromagnetic wave of high energy and a short wavelength.
Reaction A chemical reaction where a compound and an oxidant is reacted to produce heat and a new product.
Reaction Reaction in which the systems absorbs the energy from its surroundings.
Substances that are slippery to the touch.

Chapter 5 2022-05-04

Across

a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
a material that decreases the rate of a reaction
of Conservation of mass, the principle that the total amount of matter is neither created not destroyed during any chemical or physical change
that undergo the chemical change
a material that increases the rate of a reaction by lowering the activation energy
reaction, a reaction that absorbs energy
a reaction in which one emmental replaces another in a compound or when two events in different compounds trade places

Down

a chemical reaction that breaks down compounds into simpler products
the amount of one material in a certain volume of another material
change/a change in matter that produces one or more new substances
a chemical reaction in which two or more simple substances combine to form a new (more complex) substance
the new substances that form
change/any change that alters the form or appearance of a substance but does no change it into another’s substance
energy, the minimum amount of energy needed to start a chemical reaction
a type of protein that speeds up a chemical reaction in a living thing (a biological catalyst that lowers the activation energy of reactions in cells
reaction, a reaction that releases energy (usually in the form of heat)

16 Clues: the new substances that form • that undergo the chemical change • reaction, a reaction that absorbs energy • a material that decreases the rate of a reaction • the amount of one material in a certain volume of another material • change/a change in matter that produces one or more new substances • a chemical reaction that breaks down compounds into simpler products • ...

Ch 6/7 Vocab 2026-04-24

Across

a compound that changes color in the presence of an acid or a base
a well-mixed mixture contain a solvent and at least one solute that has the same properties throughout
a biological catalyst that lowers the activation energy of reactions in cells
material that releases energy when it burns
a substance formed as a result of a chemical reaction
a solid that forms from a solution during a chemical reaction
an ionic compound made from the neutralization of an acid with a base
a rapid reaction between oxygen and fuel that results in fire
equation, a short, easy way to show a chemical reaction using symbols
a mixture containing small, undissolved particles that do not settle out
a reaction of an acid with a base, yielding a solution that is not as acidic or basic as the starting solutions were
a material that increases the rate of a reaction by lowering the activation energy
substance that undergoes change in a chemical reaction
scale, a range of values used to express the concentration of hydrogen ions in a solution
the amount of one material in a certain volume of another material
a mixture in which the particles can be seen
a substance that tastes sour, reacts with metals and carbonates, and turns blue litmus red
a substance that tastes bitter, feels slippery, and turns litmus paper blue

Down

of matter, the principle stating that matter is not created or destroyed during a chemical reaction
the part of a solution that is present in the largest amount and dissolves a solute
a reaction in which one element replaces another in a compound or when two elements in different compounds trade places
a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction
the way in which acids react with some metals so as to eat away the metal
the study of properties of matter and how matter changes
energy, the minimum amount of energy needed to get a chemical reaction started
a word used to describe a solution with a pH of 7
anything that has mass and takes up space
the part f a solution present in a lesser amount and dissolved by the solvent
a chemical reaction in which two or more simple substances combine to form a new, more complex substance
chemical reaction that breaks down compounds into simpler products
a measure of how much solute can dissolve in a solvent at a given temperature
a material that decreases the rate of a reaction

32 Clues: anything that has mass and takes up space • material that releases energy when it burns • a mixture in which the particles can be seen • a material that decreases the rate of a reaction • a word used to describe a solution with a pH of 7 • a substance formed as a result of a chemical reaction • substance that undergoes change in a chemical reaction • ...

ch-1 2019-10-03

Across

reaction Reduction + oxidation
Change in food taste and odour
displacement reaction Both the rectants displaces the other.
EQUATION REPRESENTATION OF A REACTION
Reaction Splitting of reactants into products
reaction Heat required for reaction

Down

Parts of a chemical reaction
reaction Rearrangement of reactants from their actual place.
reaction of metal with air and water
chemical equation Reaction with equal number of entities
reaction Heat released from reaction
Parts of a chemical reacation
reaction Two or more reactants combines to form products.

13 Clues: Parts of a chemical reaction • Parts of a chemical reacation • reaction Reduction + oxidation • Change in food taste and odour • reaction Heat required for reaction • reaction of metal with air and water • reaction Heat released from reaction • EQUATION REPRESENTATION OF A REACTION • Reaction Splitting of reactants into products • ...

Chemistry Crossword 2017-11-07

Across

chemical combination of two or more elements in a specific ratio.
invisible negatively charged particle that orbits the nucleus of an atom
chemical reaction that takes place in cells.
chemical reaction that absorbs energy.
chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy.
change of state from a liquid to a gas.
orbit of electrons around the nucleus of an atom.
pure substance that cannot be broken down into other substances, substance made up of only one type of atom.
principle that matter is not created or destroyed in a chemical reaction, the mass of the products always equals the mass of the reactants.
the smallest part of an element that is representative of that element.

Down

combination of symbols that represent a compound.
a reaction that takes place when two or more substances react to form new substances.
change that results when two or more substances react to create a different substance, the new substance have completely different properties from the original one.
number of protons in the nucleus of one atom of an element.
cloudy mixture in which tiny particles of one substance are held within another and particles cannot be separated out from the other substance.
measure of atomic mass 1 amu is equal to 1/12th of an atom.
group 2 elements in the periodic table.
substances that helps a chemical reaction to proceed more quickly.
chemical reaction that releases energy.
description of how a substance interacts with other substances.
catalyst involved in chemical reaction in living things.
slow chemical change that occurs when oxygen in the air reacts with a metal.
group 1 elements in the periodic table, not including hydrogen.
an experiment in which all reactants and all products of a chemical reaction are accounted for.
ability of a substance to conduct electricity or heat.
mass of one atom of an element calculated from the total number of protons neutrons and electrons.

26 Clues: chemical reaction that absorbs energy. • group 2 elements in the periodic table. • chemical reaction that releases energy. • change of state from a liquid to a gas. • chemical reaction that takes place in cells. • combination of symbols that represent a compound. • orbit of electrons around the nucleus of an atom. • ...

CR TEST REVIEW 2025-12-15

Across

Observations that show a reaction occurred
Thermal energy transferred between objects
Evidence that substances have changed into new substances
Substance formed after a chemical reaction
Evidence involving gas, precipitate, or color change
Evidence of a chemical reaction involving bubbles
Solids formed during a reaction in solution
The part of the universe being studied
A reaction that absorbs heat energy
Evidence of a chemical reaction involving a change in color
Takes in energy during a reaction
When atoms rearrange, they form these substances
When atoms rearrange, their connections change
A change where the substance stays the same
The smallest unit of an element
A system where matter cannot enter or leave
A comparison group in an experiment
A change where a new substance forms
A sign of gas formation
The principle that matter is not created or destroyed
A system where matter can escape

Down

A measure of average kinetic energy
The standard used for comparison in experiments
Substance present before a chemical reaction
A reaction that produces new substances
Gives off energy during a reaction
The law stating matter is not created or destroyed
A change where no new substance forms
Two or more atoms bonded together
When total mass stays the same before and after a reaction
A solid that forms when two liquids react
The ability to cause change or do work
A reaction that releases heat energy
A first model of a solution used in engineering
The amount of matter in an object
Mixing salt and water without forming a new substance is this type of change
Anything that has mass and takes up space

37 Clues: A sign of gas formation • The smallest unit of an element • A system where matter can escape • Two or more atoms bonded together • Takes in energy during a reaction • The amount of matter in an object • Gives off energy during a reaction • A measure of average kinetic energy • A reaction that absorbs heat energy • A comparison group in an experiment • ...

STOICHIOMETRY 2015-02-16

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THE STATE OF THE MATTER: SOLID, LIQUID, OR GAS
IN A CHEMICAL REACTION, THE REACTANT IS THE STARTING CHEMICAL(S). IT APPEARS TO THE RIGHT OF AN ARROW IN AN EQUATION.
WHEN A CHEMICAL REACTION IS COMPLETED, THIS IS THE AMOUNT OF PRODUCT THAT YOU ACTUALLY MAKE
A SCIENTIFIC PRINCIPLE THAT STATES THAT MATTER CANNOT BE CREATED NOR DESTROYED
THE MASS OF AN ATOM EXPRESSED IN AMU
A PROCESS THAT CONVERTS ONE OR MORE CHEMICALS INTO A DIFFERENT CHEMICAL(S)
EXTREMELY SMALL; VISIBLE WITH A MICROSCOPE
A GROUP OF ATOMS BONDED TOGETHER
THE MASS IN ONE MOLE OF A SUBSTANCE

Down

VISIBLE TO THE NAKED, OR UNAIDED, EYE
THE ACTUAL YIELD OF A CHEMICAL REACTION DIVIDED BY THE THEORETICAL YIELD TIMES 100%
IN A CHEMICAL REACTION, THE PRODUCT IS THE STARTING CHEMICAL(S). IT APPEARS TO THE LEFT OF AN ARROW IN AN EQUATION.
QUANTITY OF PRODUCT OBTAINED FROM A COMPLETE CONVERSION OF THE LIMITING REAGENT. THIS IS HOW MUCH PRODUCT IS GIVEN IF WE LIVED IN A PERFECT WORLD.
EQUAL TO 6.023X10^23
TWO OR MORE FORMS OF THE SAME ELEMENT THAT CONTAIN EQUAL PROTONS BUT DIFFERENT NUMBER OF NEUTRONS
THE PERCENTAGE BY MASS OF EACH ELEMENT IN A COMPOUND
THE LIMITING REAGENT IS THE CHEMICAL IN A REACTION THAT DETERMINES HOW FAR A REACTION CAN PROCEED OR HOW MUCH PRODUCT CAN BE MADE
A REPRESENTATION OF A CHEMICAL REACTION WHERE THE REACTANTS ARE ON THE LEFT OF AN ARROW AND THE PRODUCTS ON THE RIGHT OF AN ARROW
A MEASUREMENT OF AN AMOUNT OF A SUBSTANCE, ALWAYS EQUAL TO 6.023X10^23
THE SET PROPORTIONS IN WHICH ELEMENTS OR COMPOUNDS REACT WITH ONE ANOTHER

20 Clues: EQUAL TO 6.023X10^23 • A GROUP OF ATOMS BONDED TOGETHER • THE MASS IN ONE MOLE OF A SUBSTANCE • THE MASS OF AN ATOM EXPRESSED IN AMU • VISIBLE TO THE NAKED, OR UNAIDED, EYE • EXTREMELY SMALL; VISIBLE WITH A MICROSCOPE • THE STATE OF THE MATTER: SOLID, LIQUID, OR GAS • THE PERCENTAGE BY MASS OF EACH ELEMENT IN A COMPOUND • ...

Science Vocab chapter 4 2018-10-25

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system matter can enter from or escape to the surroundings.
substances that undergo the chemical changes.
the amount of a substance in a given volume.
of conservation of mass states that during a chemical reaction matter is not created or destroyed.
the new substances that form.
in chemistry when two or more elements or compounds combine to make a more complex substance, the reaction is classified as...
increases the reaction rate by lowering the activation energy needed.
when one element replaces another element in a compound, or if two elements in different compounds trade places, the reaction is a replacement.
a number placed in front of a chemical formula in an equation.
reaction the energy released as the products form is greater than the energy required to break the bonds of the reactants.

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A material used to decrease the rate of a chemical reaction is an...
change any change that alters the form or appearance of a substance but does not change it into another substance.
the cells in your body contain thousands of biological catalysts called...
reaction more energy is required to break the bonds of the reactants than is released by the formation of the products.
occurs when compounds break down into simpler products.
a solid that forms from liquids during a chemical reaction.
system matter does not enter or leave
energy the minimum amount of energy needed to start a chemical reaction.
change A change in matter that produces one or more new substances.

19 Clues: the new substances that form. • system matter does not enter or leave • the amount of a substance in a given volume. • substances that undergo the chemical changes. • occurs when compounds break down into simpler products. • system matter can enter from or escape to the surroundings. • a solid that forms from liquids during a chemical reaction. • ...

Mod 5 vocab 2021-11-13

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high-temperature exothermic redox chemical reaction between a fuel and an oxidant
a substance produced during a natural, chemical, or manufacturing process.
the numbers or terms used to balance chemical equations and are placed in front of a chemical symbol or formula
a substance that takes part in and undergoes change during a reaction.
is a chemical reaction in which one element is replaced by another in a compound

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reactions that occur when two different atoms or molecules interact to form a different molecule or compound
replacement reaction is a chemical process involving the exchange of bonds between two reacting chemical species which results in the creation of products with similar or identical bonding affiliations.
solution solution in which the solvent is water. It is mostly shown in chemical equations by appending to the relevant chemical formula.
s the process or effect of simplifying a single chemical entity into two or more fragments
A solvent is a substance that dissolves a solute, resulting in a solution
ion an ion that does not take part in the chemical reaction
the process of transforming a dissolved substance into an insoluble solid from a super-saturated solution.
ionic equation indicates all of the dissociated ions in a chemical reaction.
the minor component in a solution, dissolved in the solvent.
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right
a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction a chemical process in which two or more substances act mutually on each other and are changed into different substances, or one substance changes into two or more other substances.
ionic equation the chemical equation that shows only those elements, compounds, and ions that are directly involved in the chemical reaction

17 Clues: ion an ion that does not take part in the chemical reaction • the minor component in a solution, dissolved in the solvent. • a substance that takes part in and undergoes change during a reaction. • A solvent is a substance that dissolves a solute, resulting in a solution • a substance produced during a natural, chemical, or manufacturing process. • ...

Types Of Reaction 2024-05-11

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A Reaction in which two chemical substances react by exchanging ions to produce two new molecules
A reaction in which one element is substituted for another element in a compound.
A substance that donates electrons to another substance in a chemical reaction.
A reaction in which oxygen atom is added or hydrogen atom is lost.
Releasing heat energy during a chemical reaction
A reaction in which a compound breaks down into two or more simpler substances

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A chemical process in which two or more simple elements or compounds combine to form a more complex product
A chemical reaction which involves addition of hydrogen or removal of oxygen or gain of electron(s)
Is a process where substances transform into new substances through the breaking and forming of chemical bonds.
Relating to chemical reactions triggered by light energy.
A chemical reaction occurring in an aqueous solution where two ionic bonds combine, resulting in the formation of an insoluble salt
A substance that takes part in and undergoes change during a reaction.
A substance that donates electrons to another substance in a chemical reaction.
Absorbing heat energy during a chemical reaction.
A chemical reaction in which an acid and base which react together to form a salt and water as products.

15 Clues: Releasing heat energy during a chemical reaction • Absorbing heat energy during a chemical reaction. • Relating to chemical reactions triggered by light energy. • A reaction in which oxygen atom is added or hydrogen atom is lost. • A substance that takes part in and undergoes change during a reaction. • ...

CHEMICAL REACTIONS AND EQUATIONS 2022-08-02

CHEMICAL REACTIONS AND EQUATIONS crossword puzzle

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the symbol aq in a chemical equation means
Gain of oxygen by a substance during a chemical reaction
Solid that forms from a solution during a chemical reaction
A destructive chemical process in which metals are oxidized in presence of air and moisture
Substance formed as a result of a chemical reaction

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Shortest representation of a chemical reaction using chemical formulae.
Gain of hydrogen by a substance during a chemical reaction
Reaction that gives out heat energy
Reaction that absorbs heat energy
A reaction in which a single product is formed when two or more reactants combine
A reaction in which Oxidation of fats/oils results into the formation of acids
Chemical reaction in which a single compound breaks down into two or more elements or compounds
A reaction in which an element displaces another element from its compound

13 Clues: Reaction that absorbs heat energy • Reaction that gives out heat energy • the symbol aq in a chemical equation means • Substance formed as a result of a chemical reaction • Gain of oxygen by a substance during a chemical reaction • Gain of hydrogen by a substance during a chemical reaction • Solid that forms from a solution during a chemical reaction • ...

Chemical Reactions Vocab 2017-08-03

Chemical Reactions Vocab crossword puzzle

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a reaction in which one element displaces another in a compound
an ionic compound that usually remains dissolved in a solution after an acid-base reaction has occurred
dissolves in solution
a chemical equation showing all the species as they are actually present in solution
a reaction that occurs in solution and forms a gas as one of the products
a reaction in which electrons are transferred from one substance to another
a solution containing a solute that dissociates into ions; therefore, a solution that conducts electricity well
a reaction in which simpler substances combine to form more complex substances
a chemical equation showing the complete, neutral formulas for every compound in a reaction
ions that do not participate in a reaction; they appear unchanged on both sides of a chemical equation
a chemical equation in which the numbers of each type of atom on both sides of the equation are equal
an equation that shows only the species that actually participate in a reaction
a homogeneous mixture of a substance with water

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a reaction in which two elements or groups of element in two different compounds exchange places to form two new compounds
a reaction that forms water and typically a salt
a chemical reaction in which simpler substances combined to form more complex substances
a reaction in which one element displaces another in a compound
a reaction that takes place when an acid and a base are mixed; to form water and a salt
a reaction that forms a solid or precipitate when two aqueous solutions are mixed
an insoluble product formed through the reaction of two solutions containing soluble compounds
a reaction in which a complex substance breaks apart to form simpler substances
a set of empirical rules used to determine whether an ionic compound is soluble
a reaction in which a substance reacts with oxygen, emitting heat and forming one or more oxygen-containing compounds
does not dissolve in water

24 Clues: dissolves in solution • does not dissolve in water • a homogeneous mixture of a substance with water • a reaction that forms water and typically a salt • a reaction in which one element displaces another in a compound • a reaction in which one element displaces another in a compound • a reaction that occurs in solution and forms a gas as one of the products • ...

Grade 9 Unit B Vocabulary 2023-10-24

Grade 9 Unit B Vocabulary crossword puzzle

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an atom that has lost electrons
matter cannot be created or destroyed
nonmetals in group 17 of the periodic table
the ability for a material to be rolled into wire or rods
a chemical reaction involving the burning of a fuel with oxygen
chemically unreactive
a type of element that is a good insulator
a type of element that shares properties between metals and nonmetals
a negatively charged subatomic particle
the ability for a material to be hammered into thin sheets
nonmetal elements found in group 18 of the periodic table
a chemical reaction that absorbs heat has a reactant
the chemicals produced in a chemical reaction
a positively charged subatomic particle
a chemical reaction between a metal and oxygen

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metals in group two of the periodic table
starting chemicals in a chemical reaction
a pure substance made of only one type of molecule
metals in group one of the periodic table
an atom that has gained electrons
a substance that speeds up a chemical reaction
a table that includes all known elements organized by atomic structure
a type of element that is good at conducting heat and electricity
a pure substance made of only one type of atom
workplace hazardous material information system
a chemical reaction that releases heat as a product
something that has mass and takes up space

27 Clues: chemically unreactive • an atom that has lost electrons • an atom that has gained electrons • matter cannot be created or destroyed • a negatively charged subatomic particle • a positively charged subatomic particle • metals in group two of the periodic table • starting chemicals in a chemical reaction • metals in group one of the periodic table • ...

6 Types of Chemical Reactions 2025-11-14

6 Types of Chemical Reactions crossword puzzle

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A chemical reaction where a hydrocarbon and oxygen react.
A compound that releases hydrogen ions in solution.
This element reacts with a hydrocarbon in a combustion reaction.
The name of the compound formed when AlP and N2 react.
The name of the salt formed when HCl and NaOH react.
The name given to an ion with a positive charge.
This group of 7 elements will always occur in pairs when they are not in a compound.

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A chemical reaction where one element in a compound is replaced by a single element.
In a double replacement reaction, which element would iron replace? FeS + CaO -->
When sulphur appears as a single element, it isn't in a pair, but a group of __________.
A chemical reaction where a compound breaks down into individual elements.
In a single replacement reaction, which element would iodine replace when reacted with KF?
After you predict the products of a chemical reaction, you must use coefficients to _________ the equation.
An ionic compound formed when an acid and base react.
When phosphorous appears as a single element, it isn't in a pair, but a group of ___________.
A compound that releases hydroxide ions in solution.
This type of reaction occurs between an acid and a base.
The name given to an ion with a negative charge.
A chemical reaction where two elements combine to form a compound.
This product is formed in both an acid-base reaction and a combustion.

20 Clues: The name given to an ion with a negative charge. • The name given to an ion with a positive charge. • A compound that releases hydrogen ions in solution. • A compound that releases hydroxide ions in solution. • The name of the salt formed when HCl and NaOH react. • An ionic compound formed when an acid and base react. • ...

Chapter 5 Vocabulary 2013-11-05

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the fragments of molecules that have at least one electron available for bonding
the decomposition of a compound by an electric current
a substance that is the result of a chemical change
a substance that changes the rate of chemical reactions without being consumed
a reaction in which atoms of one element take the place of atoms of another element in a compound
a reaction that transfers energy from the reactants to the surroundings as heat
a reaction in which one compound breaks into at least two products
a reaction in which energy is transferred to the reactants as heat from the surroundings
the state in which a chemical reaction and its reverse occur at the same time and at the same rate
a protein that speeds up a specific biochemical reaction
a reaction of at least two substances that forms a new more complex compound
a substance that undergoes a chemical change
an equation that uses chemical formulas and symbols to show the reactants and products in a chemical reaction

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a reaction in which a gas, a solid precipitate, or a molecular compound is formed from the apparent exchange of ions between two compounds
a reaction in which a compound and oxygen burn
the energy stored within atoms and molecules that can be released when a substance reacts
a reaction that occurs when electrons are transferred from one reactant to another
the specific substance affected by an enzyme

18 Clues: the specific substance affected by an enzyme • a substance that undergoes a chemical change • a reaction in which a compound and oxygen burn • a substance that is the result of a chemical change • the decomposition of a compound by an electric current • a protein that speeds up a specific biochemical reaction • ...

Shai Oliva 2019-06-12

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table A table of chemical elements arranged in order of atomic number
A substance that conducts electricity when dissolved in water
Negatively charged ions formed when electrons are gained
Hg
ion Nitrate ion (NO3-)
A whole number that appears before a formula in an equation
Positively charged ions formed when electrons are lost
reaction A reaction in which oxygen reacts with another substance, often producing carbon dioxide and water
2 atoms of hydrogen and one oxygen
Atoms or groups of atoms with a charge ( negative or positive)
replacement reaction A reaction that involves an exchange of positive ions between two compounds
dot structure Name of structure of dna

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A starting substance in a chemical reaction
bonding When a pair of electrons is shared between two atoms
bonds Bonds form to make atoms happy, allow atoms to follow the octet rule, and hold atoms together
reaction A reaction in which a single compound is broken down into simpler substances
Ba
A new substance formed in a chemical reaction
1s2 2s2 2p3
1s2 2s2 2p6 3s2 3p5
bonding Atoms give away or accept electrons
Indicates a substance is dissolved in water
replacement reaction A reaction in which the atoms of one element replace the atoms of a second element

23 Clues: Ba • Hg • 1s2 2s2 2p3 • 1s2 2s2 2p6 3s2 3p5 • ion Nitrate ion (NO3-) • 2 atoms of hydrogen and one oxygen • dot structure Name of structure of dna • A starting substance in a chemical reaction • bonding Atoms give away or accept electrons • Indicates a substance is dissolved in water • A new substance formed in a chemical reaction • ...

Types of Chemical Reactions 2024-05-11

Types of Chemical Reactions crossword puzzle

Across

A chemical reaction that releases energy in the form of heat
When two compounds switch partners in a reaction
The number and types of atoms on both sides of the equation must be equal in this type of reaction
A reaction in which an acid reacts with a base to produce salt and water
Residue formed from the reaction between an acid and a base
A solid formed from a chemical reaction that settles out of a solution
A type of reaction that absorbs heat from its surroundings
The outcome of a chemical reaction
This type of reaction involves the breaking down of a compound into simpler substances

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The foul smell that develops in oils due to exposure to oxygen for a long time
The gradual destruction of materials, especially metals
The starting materials in a chemical reaction
A substance that undergoes a reduction in a chemical reaction
These minute particles are like the letters of the alphabet
A type of reaction where a single element replaces another element in a compound
Splitting compounds using electricity to obtain elements

16 Clues: The outcome of a chemical reaction • The starting materials in a chemical reaction • When two compounds switch partners in a reaction • The gradual destruction of materials, especially metals • Splitting compounds using electricity to obtain elements • A type of reaction that absorbs heat from its surroundings • ...

STOICHIOMETRY 2015-02-16

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TWO OR MORE FORMS OF THE SAME ELEMENT THAT CONTAIN EQUAL PROTONS BUT DIFFERENT NUMBER OF NEUTRONS
VISIBLE TO THE NAKED, OR UNAIDED, EYE
THE STATE OF THE MATTER: SOLID, LIQUID, OR GAS
A REPRESENTATION OF A CHEMICAL REACTION WHERE THE REACTANTS ARE ON THE LEFT OF AN ARROW AND THE PRODUCTS ON THE RIGHT OF AN ARROW
THE SET PROPORTIONS IN WHICH ELEMENTS OR COMPOUNDS REACT WITH ONE ANOTHER
WHEN A CHEMICAL REACTION IS COMPLETED, THIS IS THE AMOUNT OF PRODUCT THAT YOU ACTUALLY MAKE
IN A CHEMICAL REACTION, THE REACTANT IS THE STARTING CHEMICAL(S). IT APPEARS TO THE RIGHT OF AN ARROW IN AN EQUATION.
IN A CHEMICAL REACTION, THE PRODUCT IS THE STARTING CHEMICAL(S). IT APPEARS TO THE LEFT OF AN ARROW IN AN EQUATION.
EQUAL TO 6.023X10^23
THE MASS IN ONE MOLE OF A SUBSTANCE
THE PERCENTAGE BY MASS OF EACH ELEMENT IN A COMPOUND
A MEASUREMENT OF AN AMOUNT OF A SUBSTANCE, ALWAYS EQUAL TO 6.023X10^23
THE ACTUAL YIELD OF A CHEMICAL REACTION DIVIDED BY THE THEORETICAL YIELD TIMES 100%

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EXTREMELY SMALL; VISIBLE WITH A MICROSCOPE
THE LIMITING REAGENT IS THE CHEMICAL IN A REACTION THAT DETERMINES HOW FAR A REACTION CAN PROCEED OR HOW MUCH PRODUCT CAN BE MADE
A PROCESS THAT CONVERTS ONE OR MORE CHEMICALS INTO A DIFFERENT CHEMICAL(S)
A SCIENTIFIC PRINCIPLE THAT STATES THAT MATTER CANNOT BE CREATED NOR DESTROYED
QUANTITY OF PRODUCT OBTAINED FROM A COMPLETE CONVERSION OF THE LIMITING REAGENT. THIS IS HOW MUCH PRODUCT IS GIVEN IF WE LIVED IN A PERFECT WORLD.
THE MASS OF AN ATOM EXPRESSED IN AMU
A GROUP OF ATOMS BONDED TOGETHER

Midterm Crossword review 2020-01-06

Midterm Crossword review crossword puzzle

Across

How hot or cold something is
an arrangement of elements showing the repeating patterns of their properties.
the change of state from liquid to gas.
a reaction that releases energy, example: the body
2,8,18,32.
a material that increases the rate of a reaction by lowering the activation energy.
a chemical reaction that break down compounds into simpler products.
the ratio of mass of a substance to it volume.
the basic particle from which all elements are made.
the attractions between oppositely charged ions.
a chemical reaction when two or more simple substances combine to form a new, more complex substance.

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a short way to show a chemical reaction using symbols.
a chemical reaction replaces another in a compound, or when 2 elements trade places.
A small particle that is neutral.
a state of matter that has no definite shape but has a definite volume.
the amount of matter in an object.
a chemical bond formed when two atoms share an electron.
a reaction that absorbs energy, example: ice
the temperature at which a substance changes from a solid to a liquid.
represents the amount of electrons in electron configuration.
small, positive particles found in the nucleus.
a state of matter that has a definite shape and volume.
a state of matter that has no definite shape or volume.
anything that has mass and takes up space.
small, negative particles that move around the nucleus.

25 Clues: 2,8,18,32. • How hot or cold something is • A small particle that is neutral. • the amount of matter in an object. • the change of state from liquid to gas. • anything that has mass and takes up space. • a reaction that absorbs energy, example: ice • the ratio of mass of a substance to it volume. • small, positive particles found in the nucleus. • ...

C3.1 Introducing chemical reactions 2021-05-18

C3.1 Introducing chemical reactions crossword puzzle

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molecule containing two atoms
when a reactant is present in an amount greater than that needed to react with the other reactant
a type of reaction in which a precipitate forms
a type of chemical equation that models the change that happens to one reactant in a reaction
an ion formed when a group of atoms loses of gains electrons
a charged particle present in a reaction mixture, but that does not take part in the reaction
a model for a reaction showing formulae and number of units for all substances involved. The numbers of each atom are the same on both sides of the equation
an insoluble product in the solid state, formed during a reaction involving solutions
the number of entities in one mole, equal to the number of atoms in 12.0 g of 12C atoms, 6.02 × 1023

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a type of chemical equation that models how oppositely charged ions form an ionic compound
amount of substance that contains the same number of particles (6.02 × 1023) as there are atoms in 12.0 g of 12C
the principle that states that the total mass stays the same during a chemical reaction, because atoms are not created or destroyed during a chemical reaction
a model of a reaction that describes reactants and products using their chemical names
apparatus in which substances can enter or leave the reaction mixture during a reaction
letters used to represent the physical state of a substance (g, gas; l, liquid; s, solid; aq, dissolved in water)
apparatus in which substances cannot enter or leave the reaction mixture during a reaction
blue paper changes to red in acidic solution, and red paper turns to blue in an alkaline solution
a description of a compound or an element that uses symbols for atoms, and numbers to show the actual number of atoms of each element in a molecule
a reactant present in an amount less that that needed to react completely with the other reactant in a chemical reaction
the mass in grams of one mole of a substance
describes the relative amounts of each substance involved in a chemical reaction
alkaline calcium hydroxide solution. It turns cloudy white in the presence of carbon dioxide

22 Clues: molecule containing two atoms • the mass in grams of one mole of a substance • a type of reaction in which a precipitate forms • an ion formed when a group of atoms loses of gains electrons • describes the relative amounts of each substance involved in a chemical reaction • an insoluble product in the solid state, formed during a reaction involving solutions • ...

Types Of Reaction-Crossword Puzzle(M.A) 2024-05-06

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Reaction that absorbs heat from its surroundings.
Reaction that releases heat to its surroundings.
Reaction between an acid and a base to form water and a salt.
Chemical reaction involving the loss of electrons by a substance.
Type of reaction involving both reduction and oxidation.
Combination of two or more substances to form a new compound.
Chemical reaction involving the gain of electrons by a substance.

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Type of reaction where an acid reacts with a base to form salt and water.
Formation of a solid from a solution during a chemical reaction.
Reaction where water breaks down a compound into simpler substances.
Breakdown of a compound into simpler substances.
Type of replacement reaction involving two reactants.
Rapid chemical reaction between a fuel and oxygen, often producing heat and light.
Type of replacement reaction involving one reactant.
Another term for replacement reaction where one element replaces another in a compound.
Reaction in which an element replaces another in a compound.

16 Clues: Breakdown of a compound into simpler substances. • Reaction that releases heat to its surroundings. • Reaction that absorbs heat from its surroundings. • Type of replacement reaction involving one reactant. • Type of replacement reaction involving two reactants. • Type of reaction involving both reduction and oxidation. • ...

Chapter 5 lesson 1 2020-03-03

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The new substances that form.
Increases the reaction rate by lowering the activation energy needed.
The amount of a substance in a given volume.
Substances that undergo the chemical changes.
Any change that alters the form or appearance of a substance but does not change it into another substance
The energy released as the products form is greater that the energy required to break the bonds of the reactants.
Matter can enter from or escape to the surroundings.
Matter does not enter or leave
A number placed in front of a chemical formula in an equation.
During a chemical reaction, matter is not created or destroyed.
When two or more elements or compounds combine to make a more complex substance.

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When one element replaces another element in a compound or if two elements in different compounds trade places.
A solid that forms from liquids during a chemical reaction.
energy The minimum amount of energy needed to start a chemical reaction.
A way to show a chemical reaction, using symbols instead of words.
More energy is required to break the bonds of the reactants than is released by the formation of the products.
A change in matter that produces one or more new substances.
Reaction that occurs when compounds break down into simpler products.
A material used to decrease the rate of a chemical reaction.
The cells in your body that contain thousands of biological catalysts.

20 Clues: The new substances that form. • Matter does not enter or leave • The amount of a substance in a given volume. • Substances that undergo the chemical changes. • Matter can enter from or escape to the surroundings. • A solid that forms from liquids during a chemical reaction. • A change in matter that produces one or more new substances. • ...

chapter 5 vocab crossword 2020-03-27

chapter 5 vocab crossword crossword puzzle

Across

the amount of a substance in a given volume
a way to show a chemical reaction but with symbols
a number placed in front of a chemical formula in an equation
a material used to decrease the rate of a chemical reaction
substances that undergo chemical changes
where matter can enter or escape to the surroundings
when one element replaces another element in a compound
new substances that form
increases the reactiog rate by lowering the activation energy
a solid that forms liquids during a chemical reaction
any change that altes the appernce or a substace

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when 2 or more elements combine to make a more complex substace
states that matter can not be created or destroyed
energy being absor
biological catalyst that help these reactions occur at body tempreature
a reaction occurs when compounds breakdown into simpler
minimum amount of energy to start a chemical reaction
energy being released
a change where one substace becomes a different substance
where matter can not enter or escape

20 Clues: energy being absor • energy being released • new substances that form • where matter can not enter or escape • substances that undergo chemical changes • the amount of a substance in a given volume • any change that altes the appernce or a substace • states that matter can not be created or destroyed • a way to show a chemical reaction but with symbols • ...

Chem Final Crossword 2019-06-12

Across

1s2 2s2 2p3
Hg
A substance that conducts electricity when dissolved in water
replacement reaction A reaction that involves an exchange of positive ions between two compounds
A whole number that appears before a formula in an equation
table A table of chemical elements arranged in order of atomic number
bonding When a pair of electrons is shared between two atoms
Ba
Positively charged ions formed when electrons are lost
2 atoms of hydrogen and one oxygen
dot structure Name of structure of dna

Down

reaction A reaction in which oxygen reacts with another substance, often producing carbon dioxide and water
bonds Bonds form to make atoms happy, allow atoms to follow the octet rule, and hold atoms together
Indicates a substance is dissolved in water
reaction A reaction in which a single compound is broken down into simpler substances
ion Nitrate ion (NO3-)
A starting substance in a chemical reaction
A new substance formed in a chemical reaction
1s2 2s2 2p6 3s2 3p5
bonding Atoms give away or accept electrons
Negatively charged ions formed when electrons are gained
replacement reaction A reaction in which the atoms of one element replace the atoms of a second element
Atoms or groups of atoms with a charge ( negative or positive)

23 Clues: Hg • Ba • 1s2 2s2 2p3 • 1s2 2s2 2p6 3s2 3p5 • ion Nitrate ion (NO3-) • 2 atoms of hydrogen and one oxygen • dot structure Name of structure of dna • Indicates a substance is dissolved in water • A starting substance in a chemical reaction • bonding Atoms give away or accept electrons • A new substance formed in a chemical reaction • ...

Lesson 5 Crossword - Energy (ATP) & Enzymes 2016-05-26

Lesson 5 Crossword - Energy (ATP) & Enzymes crossword puzzle

Across

Initial molecules in a chemical reaction
Chemical reactions that break down large molecules into small ones
Type of inhibition where an enzyme's active site is blocked by a molecule
Initial molecule in a chemical reaction that binds to an enzyme's active site
Type of regulatory molecule that changes the shape of the enzyme so that it can function
Type of reaction that requires an input of energy
Stored energy
Type of reaction that releases energy
Organism that uses sunlight to make food
Organism that eats other organisms

Down

Organism that breaks down dead material
_____ pathway, chemical reactions linked in a particular order
The _____ site is where a substrate binds to an enzyme
_____ regulation changes the shape of the enzyme
Energy of movement
Chemical reactions that build large molecules from small ones
Macromolecule that functions as a catalyst
Type of inhibition where the end product of a pathway becomes the inhibitor of the initial enzyme
Molecules produced in a chemical reaction
Type of regulatory molecule that changes the shape of the enzyme so that it cannot function

20 Clues: Stored energy • Energy of movement • Organism that eats other organisms • Type of reaction that releases energy • Organism that breaks down dead material • Initial molecules in a chemical reaction • Organism that uses sunlight to make food • Molecules produced in a chemical reaction • Macromolecule that functions as a catalyst • ...

Chapter 18 & 19 Vocab 2016-05-15

Across

/ a measure of the concentration of hydronium ions, H3O+, in a solution
/ the component of a solution that is present in the greatest amount
effect / the scattering of light by the particles in a colloid
energy / energy needed to break chemical bonds in the reactants to start a reaction
/ a mixture that contains particles that are greater than 1,000 nanometers
reactant / a reactant that is not completely used up in a chemical reaction
/ a substance that produces hydroxide ions (OH-) when dissolved in water
/ a mixture of two or more substances that is homogenous at the molecular level
/ a certain length of time after which half the amount of a radioactive element has undergone radioactive decay
/ the reaction of an acid and a base to produce a salt and water
scale / it goes form 1 to 14 with 1 being very acidic and 14 being very basic
reaction / an endothermic reaction that occurs when an ionic compound dissolves in water to make an ionic solution
/ describes a chemical reaction that releases more energy than it uses
/ describes a solution with a concentration less than the maximum solubility
bond / an intermolecular force between the hydrogen on one molecule to an atom on another molecule
/ the moles of solute per liter of solution
rate / the change in concentration of reactant or products in a chemical reaction over time
/ any component of a solution other than the solvent
equilibrium / the state at which the rate of the forward reaction equals the rate of the reverse reaction for a chemical reaction
reactant / a reactant that is used up first in a chemical reaction

Down

/ to separate and disperse a solid into individual particles in the presence of a solvent
yield / the actual yield of a product in a chemical reaction divided by the predicted yield and multiplied by 100
fission / a nuclear reaction in which the nuclei of heavier atoms are split to make lighter atoms
/ the ratio of solute to solvent in a solution
/ describes a chemical reaction that uses more energy than it releases
molecule / a molecule that has a negative and a positive end or pole
/ describes a solution with a concentration greater than the maximum solubility
/ the state of a solution in which the dissolving rate equal the rate at which molecules come out of solution
rules / a set of rules used to predict whether an ionic compound will be soluble or insoluble in water
/ a molecule added to a chemical reaction that increases the reaction rate without getting used up in the process
/ a molecule that slows down a chemical reaction
/ a mixture that contains evenly distributed particles that are 1 to 1,000 nanometers in size
molecular theory / the concept that all atoms and molecules exhibit random motion
/ describes a solution that has as much solute as the solvent can dissolve under the conditions
/ when a solute is unable to dissolve in a particular solvent
/ a solution of two or more solids
polar molecule / a molecule that does not have distinctly-charged poles
/ a substance that produces hydronium ions (H3O+) when dissolved
percent / the mass of the solute divided by the total mass of the solution multiplied by 100

39 Clues: / a solution of two or more solids • / the moles of solute per liter of solution • / the ratio of solute to solvent in a solution • / a molecule that slows down a chemical reaction • / any component of a solution other than the solvent • / when a solute is unable to dissolve in a particular solvent • effect / the scattering of light by the particles in a colloid • ...

C3.1 Introducing chemical reactions 2021-05-18

Across

molecule containing two atoms
when a reactant is present in an amount greater than that needed to react with the other reactant
a type of reaction in which a precipitate forms
a type of chemical equation that models the change that happens to one reactant in a reaction
an ion formed when a group of atoms loses of gains electrons
a charged particle present in a reaction mixture, but that does not take part in the reaction
a model for a reaction showing formulae and number of units for all substances involved. The numbers of each atom are the same on both sides of the equation
an insoluble product in the solid state, formed during a reaction involving solutions
the number of entities in one mole, equal to the number of atoms in 12.0 g of 12C atoms, 6.02 × 1023

Down

a type of chemical equation that models how oppositely charged ions form an ionic compound
amount of substance that contains the same number of particles (6.02 × 1023) as there are atoms in 12.0 g of 12C
the principle that states that the total mass stays the same during a chemical reaction, because atoms are not created or destroyed during a chemical reaction
a model of a reaction that describes reactants and products using their chemical names
apparatus in which substances can enter or leave the reaction mixture during a reaction
letters used to represent the physical state of a substance (g, gas; l, liquid; s, solid; aq, dissolved in water)
apparatus in which substances cannot enter or leave the reaction mixture during a reaction
blue paper changes to red in acidic solution, and red paper turns to blue in an alkaline solution
a description of a compound or an element that uses symbols for atoms, and numbers to show the actual number of atoms of each element in a molecule
a reactant present in an amount less that that needed to react completely with the other reactant in a chemical reaction
the mass in grams of one mole of a substance
describes the relative amounts of each substance involved in a chemical reaction
alkaline calcium hydroxide solution. It turns cloudy white in the presence of carbon dioxide

chapter seventeen 2022-05-16

Across

a catalyst that exists in the same physical state as the reaction it catalyzes
The mathematical relationship between the rate of a chemical reaction at a given temperature
for a reactant describes how the rate is affected by the concentration of that reactant
Term used to describe an activated complex because the activated complex is as likely to form reactants as it is to form
a short-lived, unstable arrangement of atoms that may break apart and re-form
The slowest elementary step in a complex reaction
a substance that slows down the reaction rate of a chemical reaction or prevents a chemical reaction from happening
a substance produced in one elementary step of a complex reaction
states that atoms, ions, and molecules must collide in order to react
a chemical reaction that consists of two or more elementary steps

Down

a substance that increases the rate of a chemical reaction by lowering activation energies
determines the reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations
The change in concentration of a reactant or product per unit time
a catalyst that exists in a different physical state than the reaction it catalyzes
the rate of decomposition at a specific time
The complete sequence of elementary steps that make up a complex reaction
the minimum amount of energy required by reacting particles in order to form the activated complex
A numerical value that relates reaction rate and concentration of reactant at a specific temperature

18 Clues: the rate of decomposition at a specific time • The slowest elementary step in a complex reaction • a substance produced in one elementary step of a complex reaction • a chemical reaction that consists of two or more elementary steps • The change in concentration of a reactant or product per unit time • ...

chapter seventeen 2022-05-16

Across

a catalyst that exists in the same physical state as the reaction it catalyzes
The mathematical relationship between the rate of a chemical reaction at a given temperature
for a reactant describes how the rate is affected by the concentration of that reactant
Term used to describe an activated complex because the activated complex is as likely to form reactants as it is to form
a short-lived, unstable arrangement of atoms that may break apart and re-form
The slowest elementary step in a complex reaction
a substance that slows down the reaction rate of a chemical reaction or prevents a chemical reaction from happening
a substance produced in one elementary step of a complex reaction
states that atoms, ions, and molecules must collide in order to react
a chemical reaction that consists of two or more elementary steps

Down

a substance that increases the rate of a chemical reaction by lowering activation energies
determines the reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations
The change in concentration of a reactant or product per unit time
a catalyst that exists in a different physical state than the reaction it catalyzes
the rate of decomposition at a specific time
The complete sequence of elementary steps that make up a complex reaction
the minimum amount of energy required by reacting particles in order to form the activated complex
A numerical value that relates reaction rate and concentration of reactant at a specific temperature

Physical Science Crossword Puzzle 2023-12-11

Physical Science Crossword Puzzle crossword puzzle

Across

a reaction where parts of two ionic compounds are exchanged, making two new compounds
a reaction in which a compound breaks down into two or more simpler substances
when a nonmetal and a nonmetal bond it forms a
the starting materials in a reaction that undergoes a chemical change to form a product
a reaction in which one element is substituted for another element in a compound
an atom or group of atoms that carries a positive or negative electric charge
how much space an object takes up in relation to the amount of mass the object has
another subatomic particle in the nucleus but with a neutral charge
a subatomic particle in the nucleus that has a positive charge

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when a nonmetal and a metal bond to form a compound
this reaction occurs when two or more reactants combine to form a single product
the subatomic particle that circles the outside of the nucleus with a negative charge
where elements are found on
a reaction where a change of materials into another, and new substances are formed
any chemical reaction that absorbs heat from its surroundings
a chemical reaction that releases energy by light or heat
the outcome of a chemical reaction
a chemical process in which a substance reacts rapidly with oxygen and gives off heat
poor conductors of electricity and heat, can be found on the right side of the periodic table
an element that is good at conducting heat and electricity

20 Clues: where elements are found on • the outcome of a chemical reaction • when a nonmetal and a nonmetal bond it forms a • when a nonmetal and a metal bond to form a compound • a chemical reaction that releases energy by light or heat • an element that is good at conducting heat and electricity • any chemical reaction that absorbs heat from its surroundings • ...

Enzymes Vocabulary 2022-10-27

Across

the amount of energy required to start a chemical reaction
the part of the enzyme that binds to the substrate molecule
damage done to a protein
the suffix for most enzymes
a chemical reaction that releases heat
blocks an enzyme from being able to function
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
the type of macromolecule an enzyme is

Down

the amount of substrate available for a chemical reaction
a chemical reaction that absorbs heat
what is made at the end of a chemical reaction
the molecule that binds to an enzyme to undergo a chemical change
turns on an enzyme
Protein that helps speed up chemical reactions in cells.

14 Clues: turns on an enzyme • damage done to a protein • the suffix for most enzymes • a chemical reaction that absorbs heat • a chemical reaction that releases heat • the type of macromolecule an enzyme is • blocks an enzyme from being able to function • what is made at the end of a chemical reaction • Protein that helps speed up chemical reactions in cells. • ...

chapter seventeen 2022-05-16

Across

a catalyst that exists in the same physical state as the reaction it catalyzes
The mathematical relationship between the rate of a chemical reaction at a given temperature
for a reactant describes how the rate is affected by the concentration of that reactant
Term used to describe an activated complex because the activated complex is as likely to form reactants as it is to form
a short-lived, unstable arrangement of atoms that may break apart and re-form
The slowest elementary step in a complex reaction
a substance that slows down the reaction rate of a chemical reaction or prevents a chemical reaction from happening
a substance produced in one elementary step of a complex reaction
states that atoms, ions, and molecules must collide in order to react
a chemical reaction that consists of two or more elementary steps

Down

a substance that increases the rate of a chemical reaction by lowering activation energies
determines the reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations
The change in concentration of a reactant or product per unit time
a catalyst that exists in a different physical state than the reaction it catalyzes
the rate of decomposition at a specific time
The complete sequence of elementary steps that make up a complex reaction
the minimum amount of energy required by reacting particles in order to form the activated complex
A numerical value that relates reaction rate and concentration of reactant at a specific temperature

Chemistry crossword 2025-05-06

Across

the amount of matter
a substance that increases the rate of reaction
measures average particle energy
attraction between like molecules
what identifies a substance with no change
result of Chemical reaction
Atoms connected by a chemical bond
building block of matter
bonded elements

Down

releases heat
takes up space
process that changes substances
combination of multiple substances
absorbs heat
the capacity to cause change
Alters form, not identity
New substance forms
Substance consumed in a chemical reaction

18 Clues: absorbs heat • releases heat • takes up space • bonded elements • New substance forms • the amount of matter • building block of matter • Alters form, not identity • result of Chemical reaction • the capacity to cause change • process that changes substances • measures average particle energy • attraction between like molecules • combination of multiple substances • ...

Chemical Reactions 2024-01-26

Across

What chemical reaction is responsible for burning things?
If there is no subscript then it is assumed that there are/is ___ atom/atoms of that element in the compound.
The science of naming elements.
Helps balance out chemical equations by changing the number of mols.
A bond between two atoms due to positive and negative charges.
The least reactive elements on the periodic table that have full valence shells.
What is characteristic of a combustion reaction?
A way to decompose water into hydrogen and oxygen gas.
Shows the number of atoms present in certain compounds or elements.
Neither created nor destroyed in a chemical reaction.
When two compounds come together and trade one or more of their elements to each other to create two new compounds.
Needs to be added for some reactions to occur.
Speeds up a chemical reaction without being used up.
When two or more elements join together and become a compound.
When a compound of two or more elements is broken down into 2 or more elements.
A substance that dissolves in water.

Down

Which side of a chemical reaction are the reactants on?
An equation that follows the law of conservation of mass.
A chemical equation with the compounds written out.
Which side of a chemical equation are the products on?
What is absorbed or given off in a chemical reaction?
These types of reactions burn and are responsible for when we burn something.
When an element and a compound come together and rearrange to form a new compound and a new element.
A specific group of atoms held together by chemical bonds.
What does the arrow in a chemical equation represent?
A bond where two or more atoms share their electrons to obtain full octets.
An element that always occurs in pairs in nature.
An unbalanced chemical equation.
The outermost shell of electrons.
What is characteristic of an acid-base neutralization reaction?

30 Clues: The science of naming elements. • An unbalanced chemical equation. • The outermost shell of electrons. • A substance that dissolves in water. • Needs to be added for some reactions to occur. • What is characteristic of a combustion reaction? • An element that always occurs in pairs in nature. • A chemical equation with the compounds written out. • ...

26 Terms from Chapter 2 2022-03-21

26 Terms from Chapter 2 crossword puzzle

Across

the amount of substance given volume
reaction a reaction in which energy is absorbed
reaction a change in matter that produces one or more new substances
the cells in your body contain biological catalysts
a material that increases the rate of a reaction by lowering the activation energy
when one element replaces another in a compound or when two elements in different compounds trade places
a number placed in front of a chemical formula in an equation
anything that has mass and takes up space
a material that releases energy when it burns
equation a short easy way to show a chemical reaction using symbols instead of words

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of mass a principal that states that during a chemical reaction, matter is not created or destroyed
system matter can enter from or escape to the surroundings
when two or more elements or compounds combine to make a more complex substance
system matter is not allowed to enter or leave
the minimum amount of energy needed to start a chemical reaction
when the reaction is complete
a material used to decrease the rate of a reaction
breaks down compounds into simpler products
property a characteristic of a substance that describes its ability to change into other substances
property a characteristic of a substance that can be observed without changing the substance into another substance
the study of matter and how matter changes
change a change that alters the form or appearance of a substance but that does not make a substance into another substance
a solid that forms from a solution during a chemical reaction
the substances you have at the beginning
a rapid reaction between oxygen and a substance called fuel
reaction a reaction that releases energy in the form of heat

26 Clues: when the reaction is complete • the amount of substance given volume • the substances you have at the beginning • anything that has mass and takes up space • the study of matter and how matter changes • breaks down compounds into simpler products • a material that releases energy when it burns • system matter is not allowed to enter or leave • ...

Chemical Reactions and Equations 2025-04-28

Across

The spoilage of food containing fats and oils due to oxidation.
Substances that undergo chemical change in a reaction.
A reaction where a single substance breaks down into two or more substances.
A reaction that absorbs heat energy.
A reaction where two compounds exchange ions to form new compounds.
A reaction where two or more substances combine to form one.
A substance that speeds up a chemical reaction without being consumed.
Gain of oxygen or loss of hydrogen in a reaction.

Down

An insoluble solid that forms during a chemical reaction in a solution.
A reaction where one element replaces another in a compound.
Loss of oxygen or gain of hydrogen in a reaction.
The gradual destruction of metals due to reactions with air or moisture.
Substances formed as a result of a chemical reaction.
A chemical reaction in which a compound is broken down by light energy.
A reaction that releases heat energy.

15 Clues: A reaction that absorbs heat energy. • A reaction that releases heat energy. • Loss of oxygen or gain of hydrogen in a reaction. • Gain of oxygen or loss of hydrogen in a reaction. • Substances formed as a result of a chemical reaction. • Substances that undergo chemical change in a reaction. • A reaction where one element replaces another in a compound. • ...

Chemical Reactions Unit 4 Vocab 2024-12-02

Chemical Reactions Unit 4 Vocab crossword puzzle

Across

chemical reactions in which the reactants absorb heat energy from the surroundings to form products.
condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.
a number assigned to an element in chemical combination which represents the number of electrons lost
a substance that results from a chemical reaction
a reaction in which the conversion of reactants to products and the conversion of products to reactants occur simultaneously.
a chemical reaction where electrons are transferred between atoms, with one atom losing electrons (oxidized) and another atom gaining electrons (reduced)

Down

gains electrons and is reduced in a chemical reaction
a chemical reaction that involves the release of energy in the form of heat or light.
cause (a substance) to be deposited in solid form from a solution.
loses electrons and is oxidized in a chemical reaction
a chemical reaction where a substance gains electrons, resulting in a decrease in its oxidation state
a list of elements in decreasing order of their reactivity
expresses the relationship between products and reactants of a reaction at equilibrium with respect to a specific unit.
a substance that takes part in and undergoes change during a reaction.
a protein that acts as a biological catalyst

15 Clues: a protein that acts as a biological catalyst • a substance that results from a chemical reaction • gains electrons and is reduced in a chemical reaction • loses electrons and is oxidized in a chemical reaction • a list of elements in decreasing order of their reactivity • cause (a substance) to be deposited in solid form from a solution. • ...

Vocabulary 2014-06-05

Across

Energy that can be transferred due to the molecular movement.
Heat required to raise the temp.
When a reaction measures heat.
Stored energy.
Energy and mass are related.
Tells how much heat and work were added or removed to the substance.
The science of measuring the heat involvement during chemical or physical changes and reactions.
Measuring the amount of heat involved in a chemical reaction.
Energy due to motion.
The study of energy transfer in the form of heat during chemical reactions and physical changes.

Down

The heat involved during a chemical reaction.
Amount of energy required to melt a solid into a liquid.
Energy contained in Chemical bonds of various matter.
amount of energy required to turn a liquid into a gas (vaporize).
A measure of molecule movement.
The heat involved during a combustion reaction
When a reaction absorbs heat.
Two units of heated energy.
SI Unit of work or energy.
The ability to do work.

20 Clues: Stored energy. • Energy due to motion. • The ability to do work. • SI Unit of work or energy. • Two units of heated energy. • Energy and mass are related. • When a reaction absorbs heat. • When a reaction measures heat. • A measure of molecule movement. • Heat required to raise the temp. • The heat involved during a chemical reaction. • ...

chapter seventeen 2022-05-16

Across

a catalyst that exists in the same physical state as the reaction it catalyzes
The mathematical relationship between the rate of a chemical reaction at a given temperature
for a reactant describes how the rate is affected by the concentration of that reactant
Term used to describe an activated complex because the activated complex is as likely to form reactants as it is to form
a short-lived, unstable arrangement of atoms that may break apart and re-form
The slowest elementary step in a complex reaction
a substance that slows down the reaction rate of a chemical reaction or prevents a chemical reaction from happening
a substance produced in one elementary step of a complex reaction
states that atoms, ions, and molecules must collide in order to react
a chemical reaction that consists of two or more elementary steps

Down

a substance that increases the rate of a chemical reaction by lowering activation energies
determines the reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations
The change in concentration of a reactant or product per unit time
a catalyst that exists in a different physical state than the reaction it catalyzes
the rate of decomposition at a specific time
The complete sequence of elementary steps that make up a complex reaction
the minimum amount of energy required by reacting particles in order to form the activated complex
A numerical value that relates reaction rate and concentration of reactant at a specific temperature

chapter seventeen 2022-05-16

Across

a catalyst that exists in the same physical state as the reaction it catalyzes
The mathematical relationship between the rate of a chemical reaction at a given temperature
for a reactant describes how the rate is affected by the concentration of that reactant
Term used to describe an activated complex because the activated complex is as likely to form reactants as it is to form
a short-lived, unstable arrangement of atoms that may break apart and re-form
The slowest elementary step in a complex reaction
a substance that slows down the reaction rate of a chemical reaction or prevents a chemical reaction from happening
a substance produced in one elementary step of a complex reaction
states that atoms, ions, and molecules must collide in order to react
a chemical reaction that consists of two or more elementary steps

Down

a substance that increases the rate of a chemical reaction by lowering activation energies
determines the reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations
The change in concentration of a reactant or product per unit time
a catalyst that exists in a different physical state than the reaction it catalyzes
the rate of decomposition at a specific time
The complete sequence of elementary steps that make up a complex reaction
the minimum amount of energy required by reacting particles in order to form the activated complex
A numerical value that relates reaction rate and concentration of reactant at a specific temperature

Chemistry spelling words 2015-02-02

Chemistry spelling words crossword puzzle

Across

capable of being dissolved
a substance that undergoes a chemical change in any reaction
a rapid oxidation accompanied by heat and usually light
substances that cannot be separated into simpler substances by chemical means
opposite to exothermic
a chemical reaction in which an acid and a base interact with the formation of a salt
a pure substance composed of two or more elements
incapable of being dissolved
the smallest component of an element..

Down

a substance obtained from another substance through chemical change
formed of matter deposited in or by water
a reaction or process with the release of heat
the smallest physical unit of an element or compound
the separation of a substance into basic elements or substances
a substance produced by or used in a chemical process
the principal element of anything
a product of corroding as rust
the reciprocal action of chemical agents upon each other; chemical change
a compound usually having a sour taste
a substance that indicates the presence or concentration of a certain constituent

20 Clues: opposite to exothermic • capable of being dissolved • incapable of being dissolved • a product of corroding as rust • the principal element of anything • a compound usually having a sour taste • the smallest component of an element.. • formed of matter deposited in or by water • a reaction or process with the release of heat • ...

Physical and Chemical Change 2018-05-30

Physical and Chemical Change crossword puzzle

Across

columns of the periodic table
substance obtained at the end of a chemical reaction
rows of element in the periodic table
a single atom
table elements in a table according to their chemical properties
substance made by one type of atom, e.g carbon
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
a substance that is made up of 2 or more atoms
element
a solid to a liquid
a solid into a gas
a chemical that helps make a chemical reaction
the damage cause to a metal
it can turn into a gas
three-dimensional arrangement of a particle in a pattern

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2 atoms remain attracted to each other
chain molecule made of many units
liquid into a gas
molecule that contains 2 atom
amount of substance in a set volume
reaction produces new chemicals
liquid turns into gas
gas turns into a liquid
2 or more atoms that are bonded together
theory particles that collide with each other
particle that cannot be created, destroyed or broken
gas that cannot be smelt
solid or liquid at room temperature
substance used before the chemical reaction

29 Clues: element • a single atom • liquid into a gas • a solid into a gas • a solid to a liquid • liquid turns into gas • it can turn into a gas • gas turns into a liquid • gas that cannot be smelt • the damage cause to a metal • columns of the periodic table • molecule that contains 2 atom • reaction produces new chemicals • chain molecule made of many units • amount of substance in a set volume • ...

Grade 8 Midterms Crossword Puzzle 2020-01-04

Grade 8 Midterms Crossword Puzzle crossword puzzle

Across

This type of heterogeneous mixture can separate when allowed to stand
A type of property of a substance that describes its ability to change into another substance
A type of reaction that releases heat
A material which decreases the rate of a chemical reaction
Anything that has mass and takes up space
A substance you have at the beginning of a chemical reaction
A type of reaction that absorbs heat
This is another type of homogeneous mixture that does not settle out when left standing
A mixture where there is very little solute
The amount of a substance in a given volume
Able to dissolve

Down

The amount of matter in an object
The end result of a chemical reaction
How hot something is
A type of property of a substance that describes its shape, size or appearance.
A mixture where the amount of solute has reached the maximum limit
Increases reaction rate by lowering activation energy
A mixture where there is a lot of solute
A type of mixture where the particles are spread evenly
Unable to dissolve
A type of mixture where the particles are unevenly spread
A type of chemical reaction where a compound breaks down into simpler products
A type of chemical reaction where two or more elements/compounds combine
This type of homogeneous mixture often appears cloudy
The measure of the mass of a material in a given volume

25 Clues: Able to dissolve • Unable to dissolve • How hot something is • The amount of matter in an object • A type of reaction that absorbs heat • The end result of a chemical reaction • A type of reaction that releases heat • A mixture where there is a lot of solute • Anything that has mass and takes up space • A mixture where there is very little solute • ...

Unit 5 Chemistry Vocabulary Crossword Puzzle 2023-11-02

Unit 5 Chemistry Vocabulary Crossword Puzzle crossword puzzle

Across

The process of naming chemical compounds with different names so they can be easily identified.
The artificial execution of chemical reactions to obtain one or several products.
The process of simplifying a single chemical entity into two or more fragments.
All ions have this.
This type of equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.
This type of equation is the simple form of a chemical reaction.
A number placed in front of a chemical symbol or formula that shows how many atoms or molecules of the substance are involved in the reaction.

Down

An equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products is this type of equation.
An ion with more than one atom is called this.
This states how many atoms of a compound are in a substance.
Any organic chemical made up of only the elements carbon and hydrogen.
The result of a chemical reaction is called this.
A substance that undergoes change during a reaction.
A high-temperature chemical reaction between a fuel and an oxidant.
This arrow is placed after the reactants.

15 Clues: All ions have this. • This arrow is placed after the reactants. • An ion with more than one atom is called this. • The result of a chemical reaction is called this. • A substance that undergoes change during a reaction. • This states how many atoms of a compound are in a substance. • This type of equation is the simple form of a chemical reaction. • ...

Science 24 - Chemistry 2026-04-21

Across

A material made by combining two or more metallic elements to give greater strength or resistance to corrosion.
A chemical reaction in which an acid and a base interact to cancel each other out, forming water and a salt.
Substances introduced into the environment that have harmful or poisonous effects.
The starting substances that undergo change during a chemical reaction.
A specific type of pesticide designed to target and kill unwanted plants or weeds.
The effect where certain gases trap heat in the Earth's atmosphere.
Materials made of long, repeating chains of molecules.

Down

A reaction or process that absorbs heat from its surroundings, causing a drop in temperature.
The process of applying a protective zinc coating to steel or iron to prevent rusting.
The gradual destruction of materials, usually metals, by a chemical reaction with their environment.
A solid that emerges from a liquid solution during a chemical reaction.
A general term for a chemical substance used to destroy organisms harmful to cultivated plants or animals.
A reaction or process that releases heat into its surroundings.
The substances that are formed as a result of a chemical reaction.
A specific type of pesticide formulated to kill insects.
A chemical reaction that involves the rapid combination of a fuel with oxygen, producing heat and light.
A substance made by chemical synthesis, especially to imitate a natural product.
Canada's national workplace hazard communication standard.

18 Clues: Materials made of long, repeating chains of molecules. • A specific type of pesticide formulated to kill insects. • Canada's national workplace hazard communication standard. • A reaction or process that releases heat into its surroundings. • The substances that are formed as a result of a chemical reaction. • ...

Chemical Reactions and Equation By: Abbas Mustufa 2025-05-01

Across

| A type of reaction involving both the loss and gain of electrons.
| An insoluble solid that separates from a liquid solution during a reaction.
| The starting materials that undergo change in a chemical reaction.
| A process where a substance loses electrons.
| A reaction where one element or group replaces another in a compound.
| A chemical reaction where a single compound breaks down into two or more simpler substances.
| The process of ensuring that the number of atoms of each element is the same on both sides of a chemical equation.

Down

| A reaction that absorbs energy from its surroundings, often in the form of heat.
| A reaction that releases energy in the form of heat.
| A process where a substance gains electrons.
| A symbolic representation of a chemical reaction.
| Describes a substance dissolved in water.
change | Forms a new substance
| The substances formed as a result of a chemical reaction.
| A substance that increases the rate of a reaction without being consumed.

15 Clues: change | Forms a new substance • | Describes a substance dissolved in water. • | A process where a substance gains electrons. • | A process where a substance loses electrons. • | A symbolic representation of a chemical reaction. • | A reaction that releases energy in the form of heat. • | The substances formed as a result of a chemical reaction. • ...

Chemistry 2014-11-04

Across

Substance made up of only
Oxygen ion air reacts with metal
Liquid to Gas
Positively charged particle in the nucleus of an Atom
Gas to Solid
Anything that has mass and occupies space
Ability of a substance to be dissolved in another
Horizontal row of elements in the periodic table
characteristics used to describe a substance
Most reactive non-metal
Substance that speeds up the chemical reaction
Made up of one or more substances

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Solid to Liquid
Organic Catalyst
Chemical reaction that releases energy
Electrically charged atom
Chemical reaction that absorbs energy
New substance produced in a chemical reaction
substance that resists flow of electricity
Liquid to Solid
Most reactive metal
Material changes state but not composition
Chemical reaction, oxygen reacts with a substance
Solid that can be stretched into a long wire
A substance that reacts with another substance to create a new substance
Workplace Hazardous Materials Information System

26 Clues: Gas to Solid • Liquid to Gas • Solid to Liquid • Liquid to Solid • Organic Catalyst • Most reactive metal • Most reactive non-metal • Substance made up of only • Electrically charged atom • Oxygen ion air reacts with metal • Made up of one or more substances • Chemical reaction that absorbs energy • Chemical reaction that releases energy • Anything that has mass and occupies space • ...

Chemical Reactions 2022-05-12

Across

A characteristic of a substance that describes how it can form a new substance. (chemical________)
A chemical reaction that requires heat energy in order to proceed. (___________reaction)
A substance consisting of more than one element. (chemical________)
A substance that reacts with another substance in a chemical reaction.
The number before a chemical formula that shows how many molecules are involved in a chemical reaction.
A substance that slows down a chemical reaction or prevents it from occurring.
Any change in size, shape, or state of matter in which the identity of the substance remains the same.

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A chemical reaction in which energy is primarily given off in the form of heat. (__________reaction)
A number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
A process where substances react with each other and form new substances with other properties. (chemical________)
A substance formed in a chemical reaction.
a chemical compound with oxygen.
A change of one substance into a new substance (chemical_____)
The loss of electrons from the atoms of a substance.
A substance that speeds up a chemical reaction without being permanently changed itself.

15 Clues: a chemical compound with oxygen. • A substance formed in a chemical reaction. • The loss of electrons from the atoms of a substance. • A change of one substance into a new substance (chemical_____) • A substance consisting of more than one element. (chemical________) • A substance that reacts with another substance in a chemical reaction. • ...

Cracking the Code: Chemical Reactions & Equations 2024-05-15

Cracking the Code: Chemical Reactions & Equations crossword puzzle

Across

Principle stating mass is neither created nor destroyed in a chemical reaction
Reaction where ions are exchanged between two compounds
Reactions in which heat is released along with the formation of products
Symbolic representation of a chemical reaction
The new substance formed during the reaction
Reactions in which energy is absorbed
Reaction where a single compound breaks down into simpler substances
Equation with unequal numbers of each atom of each element on both sides
Decomposition of a substance using electric current
List of elements ordered by their reactivity

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Gain of oxygen in a reaction
Equation with equal numbers of each atom of each element on both sides
The substances that undergo chemical change in the reaction
Reaction where two or more substances combine to form a single new compound
Reaction involving oxygen and producing heat and light
Loss of oxygen in a reaction
Gradual destruction of metals due to reaction with moisture, acids, etc.
The solid insoluble substance formed
Reaction where a more reactive element displaces a lesser reactive metal in a compound
Formation of iron oxide due to reaction with oxygen and moisture

20 Clues: Gain of oxygen in a reaction • Loss of oxygen in a reaction • The solid insoluble substance formed • Reactions in which energy is absorbed • The new substance formed during the reaction • List of elements ordered by their reactivity • Symbolic representation of a chemical reaction • Decomposition of a substance using electric current • ...

Chemical reaction and equation - Nahush Chaudhari 2025-04-28

Chemical reaction and equation - Nahush Chaudhari crossword puzzle

Across

A reaction that absorbs heat energy.
A reaction where a more reactive element replaces a less reactive one from its compound.
An insoluble solid formed during a reaction in solution.
A substance formed after a chemical reaction.
Spoiling of fats and oils due to oxidation, often leading to a bad smell and taste.
A reaction where a substance gains oxygen or loses hydrogen.
A substance that starts a chemical reaction.

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A biological exothermic reaction where glucose is broken down to release energy.
The slow formation of a reddish-brown coating on iron.
An unbalanced chemical equation is also called this type of equation.
A reaction where a single substance breaks down into two or more products.
A chemical equation where the number of atoms of each element is equal on both sides.
A reaction that releases heat energy.
Breaking a compound using electric current.
A reaction where two or more substances combine to form a single product.
A reaction where a substance loses oxygen or gains hydrogen.
A substance that speeds up a reaction without itself being consumed.
Gradual destruction of metals by reacting with atmospheric substances like oxygen.

18 Clues: A reaction that absorbs heat energy. • A reaction that releases heat energy. • Breaking a compound using electric current. • A substance that starts a chemical reaction. • A substance formed after a chemical reaction. • The slow formation of a reddish-brown coating on iron. • An insoluble solid formed during a reaction in solution. • ...

Caleb Anthony Bagi Chapter 13 Crossword 2016-10-12

Caleb Anthony Bagi Chapter 13 Crossword crossword puzzle

Across

description of a solution in which the hydroxide ion concentration is higher than the hydronium ion concentration
a rapid exothermic oxidation-reduction reaction between a material and molecular oxygen
a measure of the acidity of a solution;equal to the negative longathm of the hydronium ion concentration
description of a solution in which the hydronium ion concentration is higher than than the hydroxide ion concentration
a description of a chemical reaction in which there is a net absorption of energy
description of a solution in which the hydronium ion concentration is equal to the hydroxide ion concentration
the minimum energy required in order for a chemical reaction to proceed
a description of a chemical reaction in which there is a net release of energy
the reacting substances in a chemical reaction

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any substance that increases the rate of a chemical reaction without itself being consumed by the reaction
a representation of a chemical reaction in which reactants are written to the left of an arrow that points toward the products on the right
the new materials formed in a chemical reaction
a polyatomic ion made by removing a proton from a water molecule
a measure of how quickly the concentration of products in a chemical reaction increases or the concentration of reactants decreases
the amount of energy required to pull two bonded atoms apart
a substance that donates hydrogen ions

16 Clues: a substance that donates hydrogen ions • the reacting substances in a chemical reaction • the new materials formed in a chemical reaction • the amount of energy required to pull two bonded atoms apart • a polyatomic ion made by removing a proton from a water molecule • the minimum energy required in order for a chemical reaction to proceed • ...

chapter seventeen 2022-05-16

Across

a catalyst that exists in the same physical state as the reaction it catalyzes
The mathematical relationship between the rate of a chemical reaction at a given temperature
for a reactant describes how the rate is affected by the concentration of that reactant
Term used to describe an activated complex because the activated complex is as likely to form reactants as it is to form
a short-lived, unstable arrangement of atoms that may break apart and re-form
The slowest elementary step in a complex reaction
a substance that slows down the reaction rate of a chemical reaction or prevents a chemical reaction from happening
a substance produced in one elementary step of a complex reaction
states that atoms, ions, and molecules must collide in order to react
a chemical reaction that consists of two or more elementary steps

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a substance that increases the rate of a chemical reaction by lowering activation energies
determines the reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations
The change in concentration of a reactant or product per unit time
a catalyst that exists in a different physical state than the reaction it catalyzes
the rate of decomposition at a specific time
The complete sequence of elementary steps that make up a complex reaction
the minimum amount of energy required by reacting particles in order to form the activated complex
A numerical value that relates reaction rate and concentration of reactant at a specific temperature

chapter seventeen 2022-05-16

Across

a catalyst that exists in the same physical state as the reaction it catalyzes
The mathematical relationship between the rate of a chemical reaction at a given temperature
for a reactant describes how the rate is affected by the concentration of that reactant
Term used to describe an activated complex because the activated complex is as likely to form reactants as it is to form
a short-lived, unstable arrangement of atoms that may break apart and re-form
The slowest elementary step in a complex reaction
a substance that slows down the reaction rate of a chemical reaction or prevents a chemical reaction from happening
a substance produced in one elementary step of a complex reaction
states that atoms, ions, and molecules must collide in order to react
a chemical reaction that consists of two or more elementary steps

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a substance that increases the rate of a chemical reaction by lowering activation energies
determines the reaction order by comparing the initial rates of a reaction carried out with varying reactant concentrations
The change in concentration of a reactant or product per unit time
a catalyst that exists in a different physical state than the reaction it catalyzes
the rate of decomposition at a specific time
The complete sequence of elementary steps that make up a complex reaction
the minimum amount of energy required by reacting particles in order to form the activated complex
A numerical value that relates reaction rate and concentration of reactant at a specific temperature

Chemistry - Year 10 2020-08-25

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A reaction in which two or more reactants bond together to form a single product
A reaction in which a substance burns in the presence of oxygen, producing heat and light
A reaction that consumes heat energy, and so feels cold
The law of conservation of mass states that _____ cannot be created or destroyed
A diagram in which the electron configuration is drawn
The outermost electron shell
Groups of elements on the periodic table that run horizontally; the number tells you how many electron shells the atoms have
The type of combustion in which the flame does not have access to enough oxygen; the flame is cool, yellow and ‘dirty’ (it produces solid carbon)
A reaction that produces heat
A reaction in which two soluble chemicals produce an insoluble solid
The energy of movement
A chemical that speeds up a chemical reaction, without using being used up in the reaction
The poisonous gas produced by incomplete combustion
The scientific word for stirring or shaking
A reaction in which an acid and a base neutralise each other, forming a salt and water

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The scientific word for how many atoms are found in a chemical; if we increase the number of atoms then the rate of the reaction will be increased
If we decrease the space between ________ , the rate of the chemical reaction will be increased
The chemicals found on the left-hand side of a chemical equation
A reaction in which a single reactant breaks down into two or more products
A way of summarising what happens in a chemical reaction
The term used to describe how many electrons an element has, and which shells they are found in
The region in the middle of an atom where the protons and neutrons are found
A reaction in which oxygen combines with a metal to form a metal oxide; rust is an example
The chemical reaction that happens in the cells of your body; glucose and oxygen are combined to form carbon dioxide, water and energy
The solid formed in a precipitation reaction
Groups of elements on the periodic table that run vertically; the number tells you how many electrons are found in their outermost shells
The chemicals found on the right-hand side of a chemical equation
The energy found in chemical bonds
The number that tells you how many electrons an element has (assuming it isn’t an ion)
The type of combustion in which the flame has access to plenty of oxygen; the flame is hot, blue, and produces carbon dioxide and water

30 Clues: The energy of movement • The outermost electron shell • A reaction that produces heat • The energy found in chemical bonds • The scientific word for stirring or shaking • The solid formed in a precipitation reaction • The poisonous gas produced by incomplete combustion • A diagram in which the electron configuration is drawn • ...

Unit 5: Reactions and Stoichiometry 2016-06-16

Unit 5: Reactions and Stoichiometry crossword puzzle

Across

a chemical compound that increases the concentration of hydrogen ions in an aqueous solution
the principle that states that the total amount of matter is constant during any chemical or physical change, matter is neither created nor destroyed
a chemical reaction in which each side of the equation has the same number of atoms of each element
composition / the percent by mass of each element in a compound
an organic compound composed only of carbon and hydrogen
a chemical reaction in which one atom gains electrons while one atom loses electrons
/ An ionic compound made up of a cation from a base and an anion from an acid

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base / Proton (H+) acceptor
reaction / A reaction in which a single compound breaks down to form two or more simpler substances (AB-->A+B)
a chemical change in which one element replaces a second element in a compound (A+Bx-->Ax+B)
a substance that increases the concentration of hydroxide ions in an aqueous solution
/ the SI unit of amount of substance
the rate at which reactants change into products over time
number of representative particles in a mole, 6.02x10^23
A solid that forms from a solution during a chemical reaction
the volume occupied by 1 mole of a gas at STP
number / positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable
/ A substance produced in a chemical reaction
a chemical substance that is present at the start of a chemical reaction

19 Clues: base / Proton (H+) acceptor • / the SI unit of amount of substance • the volume occupied by 1 mole of a gas at STP • / A substance produced in a chemical reaction • number of representative particles in a mole, 6.02x10^23 • an organic compound composed only of carbon and hydrogen • the rate at which reactants change into products over time • ...

Chapter 7 and 13 2023-05-09

Across

representations of chemical reactions
construction of complex chemical compounds from simpler ones
number placed in front of a chemical symbol or formula
chemical reaction in which one reactant breaks down into two or more products
substance that takes part in and undergoes change during a reaction
substance that increases the rate of a reaction without itself being consumed
reactions in which the reactants absorb heat energy from the surroundings to form products
reaction in which the positive and negative ions
unit of measurement in the International System of Units

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has no fixed shape, but adapts its surface to the shape of its container
dimension taken through an object or body of material
species formed from chemical reactions
fluid can be either a liquid or a gas.
for assigning work
chemical bond between two atoms
chemical reaction that produces heat (has a negative
conversion factor between mass and volume
It is generated by the interaction and contact of a solid body with a fluid

18 Clues: for assigning work • chemical bond between two atoms • representations of chemical reactions • species formed from chemical reactions • fluid can be either a liquid or a gas. • conversion factor between mass and volume • reaction in which the positive and negative ions • chemical reaction that produces heat (has a negative • ...

Chapter Two Vocabulary 2020-09-27

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substance that decreases activation energy and increases reaction rate in a chemical reaction.
attraction between molecules of different substances.
energy amount of energy need to break a bond between two particular atoms; or the amount of energy released when a bond forms between two particular atoms.
acid molecule that makes up proteins; composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
chemical reaction that yields a net release of energy in the form of heat.
substance formed by a chemical reaction.
measurement of acidity; related to free hydrogen ion concentration in solution.
acid hydrocarbon chain often bonded to glycerol in a lipid.
compound that donates a proton (H+) when dissovled in solution.
atom that has gained or lost one or more electrons
bond chemical bond formed through the electrical force between oppositely charged ions.
protein that catalyzes chemical reactions for organisms.
two or more atoms held together by covalent bonds; not necessarily a compound.
substance that dissovles in a solvent and is present at a lower concentration that the solvent.
condition in which reactants and products of a chemical reaction are formed at the same rate.
reactant in a chemical reaction upon which an enzyme acts.
bond chemical bond formed when two atoms share one or more pairs of electrons.
reaction process by which substances change into different substances through the breaking and forming of chemical bonds.
large, carbon-based molecule formed by monomers.

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molecule composed of carbon, hydrogen, and oxygen; includes sugars and starches.
mixture that is consistent throughout; also called a homogenous mixture.
substance in which solutes dissovled and that is present in greater concentration in a solution.
substance that is changed by a chemical reaction.
bond attraction between a slightly positive hydrogen atom and a slightly negative atom.
substance made of atoms of different elements that are bonded together in a particular ratio.
energy energy input necessary to initiate a chemical reaction.
attraction between molecules of the same substance.
acid polymer of nucleotides; the genetic material of organisms.
compound that accepts a proton (H+) when dissovled in solution.
molecular subunit of a polymer.
chemical reaction that requires a net input of energy.
substance made of only one type of atom that cannot be broken down by chemical means.
polymer composed of amino acids linked by peptide bonds folds into a particular structure depending on bonds between amino acids.
nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils.
smalles basic unit of matter.

35 Clues: smalles basic unit of matter. • molecular subunit of a polymer. • substance formed by a chemical reaction. • large, carbon-based molecule formed by monomers. • substance that is changed by a chemical reaction. • atom that has gained or lost one or more electrons • attraction between molecules of the same substance. • ...

Unit 2: Biochemistry Vocab 2022-03-02

Unit 2: Biochemistry Vocab crossword puzzle

Across

complex substance from amino acids
pH of more than 7
DNA
sugar molecules
substance on which an enzyme acts
any of the class of sugars
regulates the rate of chemical reactions
macromolecules found in all cells
molecules that combine to form proteins
composed of DNA
energy for a reaction to occur

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organic compounds that are fatty acids
constant pH
undergoes change during a reaction
very large molecules
a carbohydrate
linking two consecutive amino acids
compound that does not have carbon
glucose
rearrangement of the molecular or ionic structure
increases the rate of a chemical reaction
large class of chemical compounds
pH of less than 7
formed from a chemical reaction

24 Clues: DNA • glucose • constant pH • a carbohydrate • sugar molecules • composed of DNA • pH of more than 7 • pH of less than 7 • very large molecules • any of the class of sugars • energy for a reaction to occur • formed from a chemical reaction • substance on which an enzyme acts • large class of chemical compounds • macromolecules found in all cells • undergoes change during a reaction • ...

chemical equations and reactions 2024-05-07

chemical equations and reactions crossword puzzle

Across

When a chemical reaction occurs, these are the substances you start with.
reaction The term for a chemical reaction that absorbs heat from its surroundings.
reaction A chemical reaction where two or more substances combine to form a single new substance.
reaction This type of chemical reaction involves the transfer of electrons between reactants.
equation A representation of a chemical reaction using symbols and formulas.
displacement This type of chemical reaction involves the exchange of ions between two compounds, resulting in the formation of two new compounds.
This substance speeds up the rate of a chemical reaction without being consumed in the process.

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reaction A type of chemical reaction where a single compound breaks down into two or more simpler substances
agent The substance that causes oxidation in a redox reaction.
reaction This is the term for a chemical reaction that releases heat to its surroundings.
These are the substances produced by a chemical reaction.
reaction This process involves the rearrangement of atoms to form new substances.
of Conservation of Mass The number of atoms of each element must be the same on both sides of this in a balanced chemical equation.

13 Clues: These are the substances produced by a chemical reaction. • When a chemical reaction occurs, these are the substances you start with. • agent The substance that causes oxidation in a redox reaction. • equation A representation of a chemical reaction using symbols and formulas. • ...

Chemical reactio 2026-02-24

Across

change An endothermic change transfers energy from the surroundings.
A chemical reaction in which substances react with oxygen to form oxides.
A material that burns to transfer useful energy.
of mass In a chemical reaction, the total mass of reactants is equal to the total mass of products. This is conservation of mass. Mass is conserved in chemical reactions and in physical changes.
A substance that is made in a chemical reaction.
The chance of damage or injury from hazard.
A possible source of danger.
symbol equation In a balanced symbol equation, chemical formulae represent the reactants and products. The equation shows how atoms are rearranged, and gives the relative amounts of reactants and products.

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Some fuels are non-renewable. They form over millions of years, and will one day run out.
A chemical reaction in which a substance reacts quickly with oxygen and gives out light and heat.
A chemical reaction in which a compound breaks down to form simpler compounds and/or elements.
reaction A change in which atoms are rearranged to create new substances.
change A change that is reversible, in which new substances are not made. Examples of physical changes include changes of state, and dissolving.
fuel A fuel made from the remains of animals and plants that died millions of years ago. Fossil fuels include coal, oil, and natural gas.
change An exothermic change transfers energy to the surroundings.
equation A way of representing a chemical reaction simply. The reactants are on the lefts of an arrow, and the products are on the right. The arrow means reacts to make.
A variable that can only have whole-number values.
A starting substance in a chemical reaction.

18 Clues: A possible source of danger. • The chance of damage or injury from hazard. • A starting substance in a chemical reaction. • A material that burns to transfer useful energy. • A substance that is made in a chemical reaction. • A variable that can only have whole-number values. • change An exothermic change transfers energy to the surroundings. • ...

Science 2023-01-09

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reaction a chemical reaction in which a compound breaks down into two or more simpler substances
equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
reaction a chemical reaction that releases energy to its surroundings
mass the mass of one mole of a substance
reaction a chemical reaction that absorbs energy from its surroundings
substances that undergo change in a chemical reaction
numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

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reaction a chemical reaction in which one element takes the place of another element in a compound
reaction a chemical reaction in which two or more substances react to form a single substance
reaction a chemical reaction in which two compounds exchange positive ions and form new compounds
an amount of a substance that contains approximately 6.02 × 1023 particles of the substance
new substances formed as a result of a chemical reaction
energy the energy stored in chemical bonds

13 Clues: mass the mass of one mole of a substance • energy the energy stored in chemical bonds • substances that undergo change in a chemical reaction • new substances formed as a result of a chemical reaction • reaction a chemical reaction that releases energy to its surroundings • reaction a chemical reaction that absorbs energy from its surroundings • ...

Chapter 7 Vocabulary 2023-01-04

Across

reaction a chemical reaction in which a compound breaks down into two or more simpler substances
equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
reaction a chemical reaction that releases energy to its surroundings
mass the mass of one mole of a substance
reaction a chemical reaction that absorbs energy from its surroundings
substances that undergo change in a chemical reaction
numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

Down

reaction a chemical reaction in which one element takes the place of another element in a compound
reaction a chemical reaction in which two or more substances react to form a single substance
reaction a chemical reaction in which two compounds exchange positive ions and form new compounds
an amount of a substance that contains approximately 6.02 x 1023 particles of the substance
new substances formed as a result of a chemical reaction
energy the energy stored in chemical bonds

Chapter Two Vocabulary 2020-09-28

Across

substance that decreases activation energy and increases reaction rate in a chemical reaction.
attraction between molecules of different substances.
energy amount of energy needed to break a bond between two particular atoms; or the amount of energy released when a bond forms between two particular atoms.
acid molecule that makes up proteins; composed of carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur.
chemical reaction that yields a net release of energy in the form of heat.
substance formed by a chemical reaction.
measurement of acidity; related to free hydrogen ion concentration in solution.
acid hydrocarbon chain often bonded to glycerol in a lipid.
compound that donates a proton (H+) when dissolved in solution.
atom that has gained or lost one or more electrons
bond chemical bond formed through the electrical force between oppositely charged ions.
protein that catalyzes chemical reactions for organisms.
two or more atoms held together by covalent bonds; not necessarily a compound.
substance that dissovles in a solvent and is present at a lower concentration that the solvent.
condition in which reactants and products of a chemical reaction are formed at the same rate.
reactant in a chemical reaction upon which an enzyme acts.
bond chemical bond formed when two atoms share one or more pairs of electrons.
reaction process by which substances change into different substances through the breaking and forming of chemical bonds.
large, carbon-based molecule formed by monomers.

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molecule composed of carbon, hydrogen, and oxygen; includes sugars and starches.
mixture (solvent + solute) that is consistent throughout; also called a homogenous mixture.
substance in which solutes dissolved and that is present in greater concentration in a solution.
substance that is changed by a chemical reaction.
bond attraction between a slightly positive hydrogen atom and a slightly negative atom.
substance made of atoms of different elements that are bonded together in a particular ratio.
energy energy input necessary to initiate a chemical reaction.
attraction between molecules of the same substance.
acid polymer of nucleotides; the genetic material of organisms.
compound that accepts a proton (H+) when dissolved in solution.
molecular subunit of a polymer.
chemical reaction that requires a net input of energy.
substance made of only one type of atom that cannot be broken down by chemical means.
polymer composed of amino acids linked by peptide bonds; folds into a particular structure depending on bonds between amino acids.
nonpolar molecule composed of carbon, hydrogen, and oxygen; includes fats and oils.
smallest basic unit of matter.

35 Clues: smallest basic unit of matter. • molecular subunit of a polymer. • substance formed by a chemical reaction. • large, carbon-based molecule formed by monomers. • substance that is changed by a chemical reaction. • atom that has gained or lost one or more electrons • attraction between molecules of the same substance. • ...

Chapter 3.2 2021-10-06

Across

make up everything
things you see that you can also touch.
an action to make something visible
only physical properties change
when water reaches 120F.
depends on mass
the contents of a balloon
a rock
an energy and chemical change/reaction
substance is different after the change p
a change is size, state, or form.
cutting this the mass stays the same

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a chemical reaction in which plants produce sugar and oxygen
needed to bake foods
make up atoms
a French chemist
water and other drinks
a light that is lit by snapping a small plastic ban until the chemical reaction reoccurs
a very hot chemical reaction
a change of color.

20 Clues: a rock • make up atoms • depends on mass • a French chemist • make up everything • a change of color. • needed to bake foods • water and other drinks • when water reaches 120F. • the contents of a balloon • a very hot chemical reaction • only physical properties change • a change is size, state, or form. • an action to make something visible • cutting this the mass stays the same • ...

Chemical Equations 2026-04-07

Across

one compound breaks into simpler substances
when both sides have equal atoms
releases heat energy
matter cannot be created or destroyed
a symbolic way to show a chemical reaction
symbols like (s), (l), (g), (aq)
starting substances in a chemical reaction
reaction with oxygen producing energy

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two or more substances combine
number in front of a chemical formula
shows direction of the reaction
substances formed in a chemical reaction
number showing atoms in a molecule
absorbs heat energy
speeds up a reaction without being used up

15 Clues: absorbs heat energy • releases heat energy • two or more substances combine • shows direction of the reaction • when both sides have equal atoms • symbols like (s), (l), (g), (aq) • number showing atoms in a molecule • number in front of a chemical formula • matter cannot be created or destroyed • reaction with oxygen producing energy • substances formed in a chemical reaction • ...

Types of reactions by sujay yadav 2025-04-23

Types of reactions by sujay yadav crossword puzzle

Across

– A reaction involving the transfer of electrons between two species.
– The substances formed as a result of a chemical reaction.
– The loss of electrons during a reaction.
– A reaction that releases energy in the form of heat.
– A hydrocarbon reacts with oxygen to produce carbon dioxide and water.
– A solid that forms from a solution during a chemical reaction.
Equation – A symbolic representation of a chemical reaction.
– A reaction where two or more substances combine to form a single product.

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– A single compound breaks down into two or more simpler substances.
Replacement – One element replaces another in a compound.
– A reaction that absorbs energy from its surroundings.
Replacement – Two compounds exchange ions to form two new compounds.
– An acid and a base react to form salt and water.
– A substance that speeds up a reaction without being consumed.
– The starting substances in a chemical reaction.

15 Clues: – The loss of electrons during a reaction. • – The starting substances in a chemical reaction. • – An acid and a base react to form salt and water. • – A reaction that releases energy in the form of heat. • – A reaction that absorbs energy from its surroundings. • Replacement – One element replaces another in a compound. • ...

Energy Terms Crossword 2024-02-21

Across

The measure of average kinetic energy within a substance
The lowest limit of temperature
Matter transitioning into a different state
The results of a chemical reaction
Minimum amount of energy needed to activate molecules or atoms in a chemical reaction
The materials involved in a chemical reaction
The transfer of heat through electromagnetic waves
Mass is neither destroyed nor created in chemical reactions
Materials that do not allow energy to flow through them
Thermal energy transferred from one substance to another due to difference in temperature
A bond between a metal and nonmetal
Materials that allow energy to flow through them easily

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A way to describe a chemical reaction
Chemical reactions that release energy
Chemical reactions that absorbs energy
The transfer of heat through fluids
A bond between two nonmetals
The temperature at which a liquid changes to a solid
The transfer of heat through direct contact of substances
The temperature at which a solid turns into a liquid

20 Clues: A bond between two nonmetals • The lowest limit of temperature • The results of a chemical reaction • The transfer of heat through fluids • A bond between a metal and nonmetal • A way to describe a chemical reaction • Chemical reactions that release energy • Chemical reactions that absorbs energy • Matter transitioning into a different state • ...

cross word puzzle 2022-03-22

Across

" A solid that form's from solution during a chemical reaction."
The cells in your body contain biological catalysts called ENZYMES."
"is a amount of a substance in a given volume."
"When on element replaces another in a compound, or when two elements in different compounds trade places."
reaction- "is a reaction in which energy is absorbed
"The study of matter and how matter changes"
"A material used to decrease the rate of a reaction"
"In contrast to a synthesis reaction, a process called DECOMPOSITION breaks down compounds into simpler products."
is a material that releases energy when it burns."
The substance you have at the beginning"
"when two or more elements or compounds combine to make more complex substances the process is called synthesis."
equation-"is a short, easy way to show a chemical reaction, using symbols instead of words."
reaction-"A reaction that releases energy in the form of heat"
" a rapid reaction between oxygen and a substance called a fuel.

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"is a number placed in font of chemical formula in an equation."
property- a Characteristic of substance that describes its ability to change into other substances.
"is anything that has mass and takes up space."
system- " matter is not allowed to enter or leave."
of mass- "during a chemical reaction, matter is not created or destroyed
a material that increases the rate of reaction by lowering the activation energy."
reaction- A change in matter that produces one or more new substances.
"When the reaction is complete, you have new substances"
system- "matter can enter from or escape to the surrounding."
change- " is any change that alters the form or appearance of a substance but that does not make the substance into another substance.
property- A characteristic of a substance that can be observed without changing the substance into another substance.
energy- "is a minimum amount of energy needed to start a chemical reaction."

26 Clues: The substance you have at the beginning" • "The study of matter and how matter changes" • "is anything that has mass and takes up space." • "is a amount of a substance in a given volume." • is a material that releases energy when it burns." • system- " matter is not allowed to enter or leave." • reaction- "is a reaction in which energy is absorbed • ...

Chemical and Physical reaction worksheet 2022-03-18

Chemical and Physical reaction worksheet crossword puzzle

Across

" A solid that form's from solution during a chemical reaction."
The cells in your body contain biological catalysts called ENZYMES."
"is a amount of a substance in a given volume."
"When on element replaces another in a compound, or when two elements in different compounds trade places."
reaction- "is a reaction in which energy is absorbed
"The study of matter and how matter changes"
"A material used to decrease the rate of a reaction"
"In contrast to a synthesis reaction, a process called DECOMPOSITION breaks down compounds into simpler products."
is a material that releases energy when it burns."
The substance you have at the beginning"
"when two or more elements or compounds combine to make more complex substances the process is called synthesis."
equation-"is a short, easy way to show a chemical reaction, using symbols instead of words."
reaction-"A reaction that releases energy in the form of heat"
" a rapid reaction between oxygen and a substance called a fuel.

Down

"is a number placed in font of chemical formula in an equation."
property- a Characteristic of substance that describes its ability to change into other substances.
"is anything that has mass and takes up space."
system- " matter is not allowed to enter or leave."
of mass- "during a chemical reaction, matter is not created or destroyed
a material that increases the rate of reaction by lowering the activation energy."
reaction- A change in matter that produces one or more new substances.
"When the reaction is complete, you have new substances"
system- "matter can enter from or escape to the surrounding."
change- " is any change that alters the form or appearance of a substance but that does not make the substance into another substance.
property- A characteristic of a substance that can be observed without changing the substance into another substance.
energy- "is a minimum amount of energy needed to start a chemical reaction."

Vocabulary 2023-01-03

Across

reaction - a chemical reaction in which a compound breaks down into two or more simpler substances
equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
reaction - a chemical reaction that releases energy to its surroundings
mass - the mass of one mole of a substance
reaction - a chemical reaction that absorbs energy from its surroundings
- substances that undergo change in a chemical reaction
- numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

Down

reaction - a chemical reaction in which one element takes the place of another element in a compound
reaction - a chemical reaction in which two or more substances react to form a single substance
reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
- an amount of a substance that contains approximately 6.02 x 1023 particles of the substance
- new substances formed as a result of a chemical reaction
energy - the energy stored in chemical bonds

13 Clues: mass - the mass of one mole of a substance • energy - the energy stored in chemical bonds • - substances that undergo change in a chemical reaction • - new substances formed as a result of a chemical reaction • reaction - a chemical reaction that releases energy to its surroundings • reaction - a chemical reaction that absorbs energy from its surroundings • ...

Chapter 7 vocabulary 2023-01-03

Across

reaction a chemical reaction in which a compound breaks down into two or more simpler substances
equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
reaction a chemical reaction that releases energy to its surroundings
mass the mass of one mole of a substance
reaction a chemical reaction that absorbs energy from its surroundings
substances that undergo change in a chemical reaction
numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

Down

reaction a chemical reaction in which one element takes the place of another element in a compound
reaction a chemical reaction in which two or more substances react to form a single substance
reaction a chemical reaction in which two compounds exchange positive ions and form new compounds
an amount of a substance that contains approximately 6.02 x 1023 particles of the substance
new substances formed as a result of a chemical reaction
energy the energy stored in chemical bonds

Chapter 11 Vocabulary 2015-01-23

Across

tell in what ratio the substances react or are produced
the arrow that is represented in a chemical equation
equations that show only the soluble, strong electrolytes reacting and omit the spectator ions
when two different compounds each switch parts
item that increases the rate of a chemical reaction
a way of using the formulas to indicate the chemicals that were involved in the chemical reaction

Down

ion that exists as a reactant and a product in a chemical equation
Series list of substances ranked in order of relative reactions
reaction in which a compound takes one part of another,and leaves an element by itself
symbols and amounts of the reactants are separated from those of the products by an equal sign, arrow, or a set of opposing arrows
is a reaction where two or more elements or compounds combine together to form a single compound
what is being changed in a chemical equation
Solution solvent is emerged in water
reaction in which an compound decomposes into two or more parts
equal numbers of each type of atom on each side of the equation
a reaction in which can be reversed
the end result in a chemical equation
reaction involving heat always ending with CO2 and H2O

18 Clues: a reaction in which can be reversed • Solution solvent is emerged in water • the end result in a chemical equation • what is being changed in a chemical equation • when two different compounds each switch parts • item that increases the rate of a chemical reaction • the arrow that is represented in a chemical equation • ...

Elizabeth rose torres 2017-02-27

Across

compound something having two parts.
like water; watery.
to give up, as to superior power or authority
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
a quantity obtained by multiplying quantities together, or from an analogous algebraic operation.
the removal of hair roots or small blemishes on the skin by the application of heat using an electric current.
ion , is a charged chemical speciescomposed of two or more atoms covalently bonded or of a metal complex that can be considered to be acting as a single unit
cause (a substance) to be deposited in solid form from a solution.
a compound or substance that has been purified or prepared, especially artificially.
a thing that is made smaller or less in size or amount, in particular.
the process or result of oxidizing or being oxidized.
rapid chemical combination of a substance with oxygen, involving the production of heat and light.

Down

replacement reaction, is a type of chemical reaction where an element reacts with a compound
consisting of two atoms.
the production of chemical compounds by reaction from simpler materials.
the state or process of rotting; decay.
a quantity obtained by multiplying quantities together, or from an analogous algebraic operation.
a chemical substance that is present at the start of a chemical
replacement reaction or metathesis, is a type of chemical reaction where two compounds react,

19 Clues: like water; watery. • consisting of two atoms. • compound something having two parts. • the state or process of rotting; decay. • to give up, as to superior power or authority • the process or result of oxidizing or being oxidized. • a chemical substance that is present at the start of a chemical • cause (a substance) to be deposited in solid form from a solution. • ...

Types of reactions by Sujay Yadav 2025-04-23

Across

– A reaction involving the transfer of electrons between two species.
– The substances formed as a result of a chemical reaction.
– The loss of electrons during a reaction.
– A reaction that releases energy in the form of heat.
– A hydrocarbon reacts with oxygen to produce carbon dioxide and water.
– A solid that forms from a solution during a chemical reaction.
Equation – A symbolic representation of a chemical reaction.
– A reaction where two or more substances combine to form a single product.

Down

– A single compound breaks down into two or more simpler substances.
Replacement – One element replaces another in a compound.
– A reaction that absorbs energy from its surroundings.
Replacement – Two compounds exchange ions to form two new compounds.
– An acid and a base react to form salt and water.
– A substance that speeds up a reaction without being consumed.
– The starting substances in a chemical reaction.

Changes in matter 2025-05-14

Across

something taking part in an experiment
a combination of multiple substances
multiple elements combining chemically
smallest unit of chemical bond
stuff, takes up space
something that speeds up a chemical reaction
change something changes physically in an experiment
measuring kinetic energy
change chemical substances transform into different substances

Down

a reaction releasing chemicals into surroundings
extremely small unit of measurement
reactants absorb heat energy
substances formed due to reaction between substances
work, heat generated
property characteristics of a substance
to measure the amount of matter in something
molecule adhering to another
an action performed

18 Clues: an action performed • work, heat generated • stuff, takes up space • measuring kinetic energy • reactants absorb heat energy • molecule adhering to another • smallest unit of chemical bond • extremely small unit of measurement • a combination of multiple substances • something taking part in an experiment • multiple elements combining chemically • ...

chapter 7: Chemical Reactions review 2021-05-08

chapter 7: Chemical Reactions review crossword puzzle

Across

reaction with their environment
in a chemical reaction, the total mass of the reactants is the same as the total
a scale that represents the acidity or basicity of a solution; pH < 7 indicates an acid; pH > 7 indicates a base; pH 7 indicates a neutral solution
indicator a solution that is used to determine the pH(amount of acid or base) of a solution
reaction a chemical reaction that absorbs energy in the form of heat
neither an acid nor a base; for example,water

Down

the gradual destruction of materials by a chemical reaction with their environment
reaction a chemical reaction that releases energy in the form of heat or light
the original substances present in a chemical reaction
a reaction between an acid and a base. A salt and water (a neutral liquid) are the products of this type of reaction
chemicals that react with a base to produce a salt and water; edible acids taste sour
a paper containing an indicator that turns red when exposed to an acid and blue when exposed to a base
bases that dissolve in water
chemical substances that result from a chemical reaction mass of the products
a bond that forms between the atoms in a molecule

15 Clues: bases that dissolve in water • reaction with their environment • neither an acid nor a base; for example,water • a bond that forms between the atoms in a molecule • the original substances present in a chemical reaction • reaction a chemical reaction that absorbs energy in the form of heat • ...

CHAPTER 6 VOCABULARY 2013-11-13

Across

a reaction in which a sing compound breaks down
any chemical change when species is oxidized and another species is reduced
a substance that forms in a chemical reaction
a chemical reaction in which heat is released to the surroundings
organic group
the energy released when a chemical compound reacts to produce new compounds
a chemical reaction that requires heat

Down

representation of a chemical reaction
a reaction in which 1 element takes another elements place
2 compunds
the oxidation reaction or an organic compound
the proses which an electric current is used
a substance or molecule that participates in a chemical reaction

13 Clues: 2 compunds • organic group • representation of a chemical reaction • a chemical reaction that requires heat • the proses which an electric current is used • the oxidation reaction or an organic compound • a substance that forms in a chemical reaction • a reaction in which a sing compound breaks down • a reaction in which 1 element takes another elements place • ...

Chapter 9 Vocab 2026-04-15

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The number written in front of a reactant or product in a chemical reaction.
______ replacement reactions involve the exchange of ions between two compounds.
A(n) ________ ionic equation is an ionic equation that shows all of the particles in a solution as they exist.
______ replacement reactions are where the atoms in one element replace the atoms of another element in a compound.
_________ ions are not usually shown in ionic equations.
___ ionic equations are ionic equations that include only the particles that participate in the reaction.
The substance that dissolves a solute to form a solution.
________ Equation is a statement that uses chemical formulas to show the identities and relative amounts of the substances involved in a chemical reaction.

Down

Substances formed in a chemical reaction.
_________ Reaction is a chemical reaction in which two or more substances react to produce a single product.
_____________ Reaction is a reaction where a single compound breaks down into two or more elements or new compounds.
________ Reaction is the process by which the atoms of one or more substances are rearranged to form different substances.
An _______ solution contains one or more substances called solutes.
A solid produced during a chemical reaction.
One or more substances dissolved in a solution.
__________ Reaction is a reaction where oxygen combines with a substance and releases energy in the form of heat or light.
The starting substances in a chemical reaction.

17 Clues: Substances formed in a chemical reaction. • A solid produced during a chemical reaction. • One or more substances dissolved in a solution. • The starting substances in a chemical reaction. • _________ ions are not usually shown in ionic equations. • The substance that dissolves a solute to form a solution. • ...

Chapter 7 Vocabulary 2024-01-21

Across

the number in front of the formula
reaction reactions that involve the transfer of electrons from one species to another
reaction redox reaction
reaction any chemical reaction that absorbs heat from its environment
a substance that takes part in and undergoes change during a reaction.
6.02214076 × 1023 of some chemical unit
energy a process that involves the rearrangement of the molecular or ionic structure of a substance
reaction a chemical reaction that involves the release of energy in the form of heat or light
reaction occurs when two or more reactants combine to form a single product

Down

reaction a reaction in which one element is substituted for another element in a compound
reaction generally occur between substances in an aqueous solution
formed from a chemical reaction.
equation a symbolic representation of the molecules that take part in the chemical reactant
mass the mass in grams of one mole of the compound
reaction occurs when one reactant breaks down into two or more products

15 Clues: reaction redox reaction • formed from a chemical reaction. • the number in front of the formula • 6.02214076 × 1023 of some chemical unit • mass the mass in grams of one mole of the compound • reaction generally occur between substances in an aqueous solution • reaction any chemical reaction that absorbs heat from its environment • ...

Unit 4 Cellular Energy Vocab 2025-10-14

Unit 4 Cellular Energy Vocab crossword puzzle

Across

reaction- Reaction that converts light energy into chemical energy.
reaction- Reaction that takes place within the stroma.
The natural compound present in green plants that gives them color.
Respiration- The process of cellular respiration takes place in the presence of oxygen gas to produce energy from food.
Respiration- Type of respiration through which cells can break down sugars to generate energy in the absence of oxygen.
A substance produced during a chemical reaction.
Energy- Energy from the sun that reaches earth as visible light.
Monosaccharide sugar that is produced in photosynthesis and used during cellular respiration for energy production.

Down

Flattened sacs inside a chloroplast bounded by pigment membranes on which the light reactions of photosynthesis takes place.
The primary molecule in which energy is stored in chemical bonds for future use n cellular processes.
The chemical process of converting light energy into chemical energy
Reaction- The process by which one or more substances change to produce one or more different substances.
The anaerobic process of energy production that results in the formation of pyruvic acid from the breakdown of glucose
Cycle- a chemical reaction occuring in the mitochondria, through which all living cells produce energy in aerobic respiration.
Energy- Energy stored in the particles that make up food, fuel and other matter.
Respiration- The chemical process of converting chemical energy (ATP) into an alternative chemical energy (ATP)
A substance that takes part in and undergoes change during a reaction.

17 Clues: A substance produced during a chemical reaction. • reaction- Reaction that takes place within the stroma. • Energy- Energy from the sun that reaches earth as visible light. • The natural compound present in green plants that gives them color. • The chemical process of converting light energy into chemical energy • ...

Chapter 7 2023-01-03

Across

reaction - a chemical reaction in which a compound breaks down into two or more simpler substances
equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
reaction - a chemical reaction that releases energy to its surroundings
mass - the mass of one mole of a substance
reaction - a chemical reaction that absorbs energy from its surroundings
- substances that undergo change in a chemical reaction
- numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

Down

reaction - a chemical reaction in which one element takes the place of another element in a compound
reaction - a chemical reaction in which two or more substances react to form a single substance
reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
- an amount of a substance that contains approximately 6.02 x 1023 particles of the substance
- new substances formed as a result of a chemical reaction
energy - the energy stored in chemical bonds

Unit 4 Vocab Test 2025-04-08

Across

a chemical reaction in which energy is released to the surroundings
atoms with the same number of protons but different numbers of neutrons
process in which atoms are rearranged to produce new substances
an expression that uses symbols to show the relationship between the starting substances and the substances that are produced by a chemical reaction
substances that participate in a chemical reaction
a process by which nuclei of small atoms combine to form a new, more massive nucleus
substances formed in a reaction

Down

nuclear reaction in which a large unstable nucleus breaks into two smaller nuclei
nuclear reaction in which an unstable nucleus can give off energy and, sometimes, particles
a chemical compound that is composed of carbon, hydrogen, and possibly other elements
neutral organic compound containing carbon, hydrogen, and oxygen
law that states that matter is neither created nor destroyed
organic compound that contains only carbon atoms and hydrogen atoms
a chemical reaction that requires an input of energy
law that states energy cannot be created or destroyed
a way to represent a given substance using chemical symbols and numbers
molecules composed of the same repeating small groups of atoms joking in long chains
a change that affects the nucleus of an atom
organic compound that has acidic properties

19 Clues: substances formed in a reaction • organic compound that has acidic properties • a change that affects the nucleus of an atom • substances that participate in a chemical reaction • a chemical reaction that requires an input of energy • law that states energy cannot be created or destroyed • law that states that matter is neither created nor destroyed • ...

Chapter 13 2017-02-26

Across

a substance that donates hydrogen ions
a measure of how quickly the concentration of products in a chemical reaction increases or the concentration of reactants decreases
any substance that increases the rate of a chemical reaction without itself being consumed by the reaction
matter is neither created nor destroyed during a chemical reaction; atoms are merely rearranged, without any apparent loss or gain of mass, to form new molecules
the reacting substances in a chemical reaction
a chemical reaction in which there is a net release of energy
a polyatomic ion made by adding a proton(hydrogen ion)to a water molecule
an ionic compound commonly formed from the reaction between an acid and a base

Down

the amount of energy required to pull two bonded atoms apart, which is the same as the amount of energy released when the two atoms are brought together
the minimum energy required in order for a chemical reaction to proceed
a substance that accepts hydrogen ions
the new materials formed in a chemical reaction
a representation of a chemical reaction in which reactants are written to the left of an arrow that points toward the products on the right
a polyatomic ion made by removing a proton(hydrogen ion) to a water molecule
a chemical reaction in which there is a net absorption of energy

15 Clues: a substance that donates hydrogen ions • a substance that accepts hydrogen ions • the reacting substances in a chemical reaction • the new materials formed in a chemical reaction • a chemical reaction in which there is a net release of energy • a chemical reaction in which there is a net absorption of energy • ...

Ch 7 vocab 2023-01-03

Across

reaction a chemical reaction in which a compound breaks down into two or more simpler substances
equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
reaction a chemical reaction that releases energy to its surroundings
mass the mass of one mole of a substance
reaction a chemical reaction that absorbs energy from its surroundings
substances that undergo change in a chemical reaction
numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product

Down

reaction a chemical reaction in which one element takes the place of another element in a compound
reaction a chemical reaction in which two or more substances react to form a single substance
reaction a chemical reaction in which two compounds exchange positive ions and form new compounds
an amount of a substance that contains approximately 6.02 x 1023 particles of the substance
new substances formed as a result of a chemical reaction
energy the energy stored in chemical bonds

Atoms 2024-11-18

Across

Atoms of the same element that have different numbers of neutrons.
Substances formed as a result of a chemical reaction.
A chemical reaction that releases energy in the form of heat or light.
A vertical column in the periodic table with elements that have similar properties.
A negatively charged subatomic particle that orbits the nucleus.
Number The number of protons in the nucleus of an atom, determining the element.
Reaction A process where substances change to form new substances.
The electrons in the outermost shell of an atom, which determine bonding.

Down

A chemical bond formed by sharing electrons between atoms.
A chemical bond formed by the transfer of electrons between atoms.
Number The total number of protons and neutrons in an atom's nucleus.
A chemical reaction that absorbs energy during the process.
A positively charged subatomic particle found in the nucleus of an atom.
A subatomic particle with no charge, located in the nucleus of an atom.
Table A chart that organizes elements based on atomic number and properties.
The smallest unit of matter that retains the properties of an element.
The dense center of an atom containing protons and neutrons.
Substances present at the beginning of a chemical reaction.
of Conservation of Matter States that matter cannot be created or destroyed in a chemical reaction.
A horizontal row in the periodic table where elements have the same number of electron shells.

20 Clues: Substances formed as a result of a chemical reaction. • A chemical bond formed by sharing electrons between atoms. • A chemical reaction that absorbs energy during the process. • Substances present at the beginning of a chemical reaction. • The dense center of an atom containing protons and neutrons. • ...

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