chemical reaction Crossword Puzzles

Plant Processes (Unit 6) 2023-03-07

Plant Processes (Unit 6) crossword puzzle

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the substance that gives plants their green color
the response of a plant to the stimulus of gravity
the amount of force the water inside a cell pushes on the cell membrane
the organelle where cellular respiration takes place
the ability to cause change in a system
an action that changes or maintains the motion of an object
the force that attracts all objects in the universe to one another
the internal structure of a plant that carries water up from the roots
a waste product of cellular respiration that is used in photosynthesis

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chemical reaction that breaks down glucose and releases stored ATP
a chemical reaction that allows producers to make their own food
product of photosynthesis/chemical energy
important substance organisms gets from food
the result of a chemical reaction
the organelle where photosynthesis takes place
tiny openings in plant leaves where carbon dioxide enters
the internal structure that carries glucose through a plant
the word used for an ingredient in chemical formulas

18 Clues: the result of a chemical reaction • the ability to cause change in a system • product of photosynthesis/chemical energy • important substance organisms gets from food • the organelle where photosynthesis takes place • the substance that gives plants their green color • the response of a plant to the stimulus of gravity • ...

Conservation of Mass 2022-10-13

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a(n) _______ chemical equation has a different number of atoms per element in the products and reactants
reactants and products have the same ____. (hint: the amount of matter in an object)
the big number before a compound that tells how many molecules there are
in a balanced chemical equation with four Hydrogen atoms in the reactants, there would be _____ Hydrogen atoms in the products.
the small number after an element/compound that tells how many atoms there are
Does this chemical reaction show the conservation of mass (yes or no)? HBr + NaOH —> NaBr + OH
the substances after the chemical reaction

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the law that states that mass stays the same; ____ of mass.
the amount of atoms in the reactants and products in a balanced equation is the ____.
the substances before the chemical change/reaction
Does this chemical reaction show the conservation of mass (yes or no)? NaCl + AgNO3 —> NaNO3 + AgCl
5CH₄ has how many Carbon atoms? (spell the number)
a(n) _______ chemical equation has the same number of atoms per element in the products and reactants
H₂O₂ has how many Hydrogen atoms? (spell the number)
this symbol represents the chemical change happening

15 Clues: the substances after the chemical reaction • the substances before the chemical change/reaction • 5CH₄ has how many Carbon atoms? (spell the number) • H₂O₂ has how many Hydrogen atoms? (spell the number) • this symbol represents the chemical change happening • the law that states that mass stays the same; ____ of mass. • ...

Kinetics 2021-03-31

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______ theory used to predict the rates of chemical reactions, particularly for gases.
is fundamentally linked to the kinetic energy of atom-scale particles
substance that is present at the start of a chemical reaction
process releases heat, causing the temperature of the immediate surroundings to rise.
is the quantity of solute present in a given quantity of solution.

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the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport
a condition in the course of a reversible chemical reaction in which no net change in the amounts of reactants and products occurs.
accompanied by or requiring the absorption of heat.
is the amount of 3D space a substance or object occupies. To increase the rate of reaction, a scientist can decrease the volume which is the same thing as increasing the ______.
any substance that increases the rate of a reaction without itself being consumed
is a measure of the total area that the surface of the object occupies
is the speed at which a chemical reaction takes place.
a substance that is present at the end of a chemical reaction

13 Clues: accompanied by or requiring the absorption of heat. • is the speed at which a chemical reaction takes place. • a substance that is present at the end of a chemical reaction • substance that is present at the start of a chemical reaction • is the quantity of solute present in a given quantity of solution. • ...

Chapter 6 Metabolism Vocabulary 2024-03-07

Chapter 6 Metabolism Vocabulary crossword puzzle

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Any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron
The breakdown of complex molecules
Stored energy that can be used to do work
Model proposing that the binding of a substrate or some other molecule to an enzyme causes a change in the shape of the enzyme so as or enhance or inhibit its activity
Energy assciated with objects in motion
A biological catalyst and is almost always a protein
A reaction that requires energy to be driven
End substances after a biological process had occurred
A series of connected chemical reactions that feed on another
When a molecule binds an enzyme and prevents it from carrying out a chemical reaction
The substances which participate in a chemical reactions.
Total energy in a closed system is neither lost nor gained- it is only transformed
The minimum amount of extra energy required by a reacting molecule to get converted into a product
The source of energy for use and storage at the cellular level

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Reactions that have a negative change in free energy and consequently release free energy
A biological molecules consisting of one adenine one sugar and two phosphates
The specific region of a substrate binds and catalysis takes place where chemical reactions occurs
Catalytically active RNA molecules or RNA-protein complexes in which solely the RNA provides catalytic activity
A thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work
An organic molecule that binds to the active sites of certain enzymes to resist in the catalysis of a reaction
A biochemical process in metabolism where the simple molecules combine to generate complex molecules.
Chemical reaction with a common intermediate in which energy is transferred from one side of the reaction to the other
The chemical reactions in the body's cells that change food into energy
The ability to do work
A measure of energy that is available to do work
A nutrient that the body needs in small amount to function and stay healthy
A non-protein chemical compound that is bound to a protein and is required for the protein's biological activity

27 Clues: The ability to do work • The breakdown of complex molecules • Energy assciated with objects in motion • Stored energy that can be used to do work • A reaction that requires energy to be driven • A measure of energy that is available to do work • A biological catalyst and is almost always a protein • End substances after a biological process had occurred • ...

Chapter 6 Metabolism Vocabulary 2024-03-07

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Any chemical reaction in which the oxidation number of a molecule, atom, or ion changes by gaining or losing an electron
The breakdown of complex molecules
Stored energy that can be used to do work
Model proposing that the binding of a substrate or some other molecule to an enzyme causes a change in the shape of the enzyme so as or enhance or inhibit its activity
Energy assciated with objects in motion
A biological catalyst and is almost always a protein
A reaction that requires energy to be driven
End substances after a biological process had occurred
A series of connected chemical reactions that feed on another
When a molecule binds an enzyme and prevents it from carrying out a chemical reaction
The substances which participate in a chemical reactions.
Total energy in a closed system is neither lost nor gained- it is only transformed
The minimum amount of extra energy required by a reacting molecule to get converted into a product
The source of energy for use and storage at the cellular level

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Reactions that have a negative change in free energy and consequently release free energy
A biological molecules consisting of one adenine one sugar and two phosphates
The specific region of a substrate binds and catalysis takes place where chemical reactions occurs
Catalytically active RNA molecules or RNA-protein complexes in which solely the RNA provides catalytic activity
A thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work
An organic molecule that binds to the active sites of certain enzymes to resist in the catalysis of a reaction
A biochemical process in metabolism where the simple molecules combine to generate complex molecules.
Chemical reaction with a common intermediate in which energy is transferred from one side of the reaction to the other
The chemical reactions in the body's cells that change food into energy
The ability to do work
A measure of energy that is available to do work
A nutrient that the body needs in small amount to function and stay healthy
A non-protein chemical compound that is bound to a protein and is required for the protein's biological activity

Unit 2 Vocabulary 2022-10-04

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A subatomic particle which orbits the nucleus, with almost no mass and a negative charge
A chemical reaction in which one reactant becomes multiple products
A subatomic particle located in the nucleus, with a mass of 1 AMU and a positive charge
A substance that cannot be broken down into simpler substances by any physical or chemical means
The central part of an atom, containing protons and neutrons
A material that decreases the rate of a chemical reaction
A chemical reaction in which multiple reactants become a single product

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A chemical bond in which the atoms share pairs of valence electrons
The smallest particle of an element
A measure of how strongly an atom pulls on electrons
A substance made of several elements joined by chemical bonds in a specific ratio
A material that increases the rate of a chemical reaction by lowering the activation energy
A subatomic particle located in the nucleus, with a mass of 1 AMU and no charge (neutral)
The electrons farthest from the nucleus, which are responsible for chemical reactions
An atom which has lost or gained electrons, thereby becoming positively or negatively charged

15 Clues: The smallest particle of an element • A measure of how strongly an atom pulls on electrons • A material that decreases the rate of a chemical reaction • The central part of an atom, containing protons and neutrons • A chemical bond in which the atoms share pairs of valence electrons • A chemical reaction in which one reactant becomes multiple products • ...

Robert Pennington chapter 13 2020-10-19

Robert Pennington chapter 13 crossword puzzle

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reaction there is a net release of energy.
only having one individual joining a team.
having two atom switching partners.
no atom are gained or lost during any reaction.
chemical that donates a hydrogen ion.
reaction there is a net absorption of energy.
a substance that lowers the activation energy of a chemical reaction.

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some compound combining with oxygen.
how quickly the concetration of reactants decreases.
when reactions and its reverse act the same rate.
chemical that accepts a hydrogen ion
the amount of energy to break the bonds.
building reaction, combining the molecoles.

13 Clues: having two atom switching partners. • some compound combining with oxygen. • chemical that accepts a hydrogen ion • chemical that donates a hydrogen ion. • the amount of energy to break the bonds. • reaction there is a net release of energy. • only having one individual joining a team. • building reaction, combining the molecoles. • ...

Elements, Compounds, Mixture, and Molecules 2025-09-19

Elements, Compounds, Mixture, and Molecules crossword puzzle

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A chemical substance that start of a chemical reaction
A pure Substance that cannot be broken down into any other substance by chemical or physical means
Basic particle from which all elements are made
anything that has mass and takes up space
A representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products
2 or more atoms from different elements bonded together in a set ratio
A number in front of a chemical formula in an equation that includes how many molecules or atoms of each reactant and product are involved in a reaction.
2 or more atoms from the same element bonded together
A sample of matter, either a single element or a single compound, that has definite chemical and physical proprieties

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A mixture in which you can see different parts
Shows the elements in a compound and the set of a ratio of the atoms
A substance produced in a chemical reaction
2 or more substances
number written below chemical symbol that tells how many atoms of that element
Mixture in which substance mixed together but NOT chemically bonded

15 Clues: 2 or more substances • anything that has mass and takes up space • A substance produced in a chemical reaction • A mixture in which you can see different parts • Basic particle from which all elements are made • 2 or more atoms from the same element bonded together • A chemical substance that start of a chemical reaction • ...

SCIENCE PUZZLE 2026-03-17

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Process of removal of wastes in human body
Shape with all sides equal and all angles equal
Brain of computer
Substance that speeds up a chemical reaction
Tiny pores on leaf surface
Physical parts of computer are called
Organ used for breathing in humans
Instrument used to measure temperature

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Device used to see distant objects clearly
Chemical reaction with oxygen
Measure of chance is called
Triangle with all sides unequal
Force acting towards the center of Earth
Substance formed after a chemical reaction
Software used to browse internet

15 Clues: Brain of computer • Tiny pores on leaf surface • Measure of chance is called • Chemical reaction with oxygen • Triangle with all sides unequal • Software used to browse internet • Organ used for breathing in humans • Physical parts of computer are called • Instrument used to measure temperature • Force acting towards the center of Earth • ...

vocab 2022-09-06

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closed system
malleability
chemical change
element
open system
flammability
ductility
luster
exothermic reaction
matter

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solubility
heterogeneous mixture
substance pure substance
mixture
homogeneous mixture
physical change
Insoluble
endothermic reaction
solution
compound

20 Clues: luster • matter • mixture • element • solution • compound • Insoluble • ductility • solubility • open system • malleability • flammability • closed system • chemical change • physical change • homogeneous mixture • exothermic reaction • endothermic reaction • heterogeneous mixture • substance pure substance

Chem-E-Cross 2023-02-02

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The unit of an NMR spectrum on the X-axis is
The general formula for noncyclic alkenes is?
Chemical kinetics is studied to find out?
S(s) + O2(g) à So2.The state of SO2 in this reaction is ?
Which element is always present in Arrhenius acid ?
India has largest deposits of ____ in the world.
IUPAC name of (CH3)2CH - CH=CH - CH3 is
Substances do not show acidic properties without which compound ?
reaction between an Acid and a Base is called ___________ reaction
The IUPAC name of acetyl salicylic acid is

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Which acid is found in a nettle plant?
Alums are an example of ______.
Chemical name of ‘oil of vitriol’ is
Those substances whose smell (or odor) changes in acidic or basic solution are called _______indicators.
name the National Heritage Animal of India?
The 'Black flag' signifies
The 2006 World Cup Football Tournament held in
Name the longest river on the Earth?
india's first satellite is named after
The rate of a chemical reaction doubles for every 10°C rise in temperature. If the temperature is raised by 50°C, the rate of the reaction increases by about.

20 Clues: The 'Black flag' signifies • Alums are an example of ______. • Chemical name of ‘oil of vitriol’ is • Name the longest river on the Earth? • Which acid is found in a nettle plant? • IUPAC name of (CH3)2CH - CH=CH - CH3 is • Chemical kinetics is studied to find out? • The IUPAC name of acetyl salicylic acid is • The unit of an NMR spectrum on the X-axis is • ...

Science Crossword Puzzle 2025-02-07

Science Crossword Puzzle crossword puzzle

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a basic unit of a chemical element
of Conservation of energy energy is neither created nor destroyed
the amount of specific substance
a connection between two surfaces
Energy the energy combined within a system that's responsible for its temperature
the substance that are formed as an result of a chemical reaction
Reactions ionic structure of a substance

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Reaction A chemical reaction that releases energy by light or heat
a substance that undergoes a chance to form a new substance called "products"
Potential Energy the energy stored in the chemical bonds of a substance
Reaction any chemical reaction that absorbs heat from it's environment
a substance that is dissolved in a solution

12 Clues: the amount of specific substance • a connection between two surfaces • a basic unit of a chemical element • a substance that is dissolved in a solution • Reactions ionic structure of a substance • the substance that are formed as an result of a chemical reaction • of Conservation of energy energy is neither created nor destroyed • ...

Chemical reaction&Physical 2013-05-07

Chemical reaction&Physical crossword puzzle

Across

From solid to Liquid
Two Element or more bonds together
a mixture of a metal
1a
soft metal
one of the magnetic metal

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I am 100% c
From gas to Liquid
Two atom bond together
the smallest particles
H2O

11 Clues: 1a • H2O • soft metal • I am 100% c • From gas to Liquid • From solid to Liquid • a mixture of a metal • Two atom bond together • the smallest particles • one of the magnetic metal • Two Element or more bonds together

Chemical Reaction Vocabulary 2021-04-05

Chemical Reaction Vocabulary crossword puzzle

Across

This is the ending substance that is made during a chemical reaction.
All the stuff in the world is made up of this.
Can be an object, diagram,or computer program that makes something easier/simpler.
This is a process in which atoms rearrange to form new substances.
To change up the order or position of.

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Numbers and letters that show the types and number of atoms that repeat to make up a substance.
A group of atoms joined in a particular way.
This substance helps plants grow.
Something that is made of all the same atoms or groups of atoms.
The relative size of something.
The temperature at which a substance changes from the liquid phase to the gas phase.

11 Clues: The relative size of something. • This substance helps plants grow. • To change up the order or position of. • A group of atoms joined in a particular way. • All the stuff in the world is made up of this. • Something that is made of all the same atoms or groups of atoms. • This is a process in which atoms rearrange to form new substances. • ...

Chemical Reaction Vocabulary 2021-04-05

Across

This is the ending substance that is made during a chemical reaction.
All the stuff in the world is made up of this.
Can be an object, diagram,or computer program that makes something easier/simpler.
This is a process in which atoms rearrange to form new substances.
To change up the order or position of.

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Numbers and letters that show the types and number of atoms that repeat to make up a substance.
A group of atoms joined in a particular way.
This substance helps plants grow.
Something that is made of all the same atoms or groups of atoms.
The relative size of something.
The temperature at which a substance changes from the liquid phase to the gas phase.

General Chemistry 2 2025-02-23

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Is the transfer of thermal energy between two bodies that are a different temperatures and is not equal to thermal energy.
Occur from an ordered state to a more random arrangement
Is a mathematical expression that show how the rate of reaction depends on the concentration of the reactants
Is a thermodynamic term used to refer to the maximum work available for a process until the system comes into equilibrium with its surroundings
Speed up the rate o a chemical reaction by providing an alternate route for the reaction to occur with lower activation energy
Explains why different reactions occur at different rates and suggests ways to change the rate of reaction
Are solid featuring highly ordered arrangement of their particles
Is of the same phase as that of the reactants products
Is the study of energy or heat flow that accompanies a chemical reaction and/or physical transformation.
Equation A chemical equation that shows the value and direction of heat involved in reactions
Measures the flow of energy (as heat) between the system and its surroundings
Uses a catalyst that is of different phase that of the reactants and products

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The scientific study of the interaction of heat and other types of energy
Is the difference between the energy of the transition state and the energy of the reactants
Are solidsin which the particle are not arrange in any specific order
A process called seeding
Are particles that ionize in a solutions
Has an appreciable effect on the solubility of gas-liquid solutions, but has no affect on the solubility of solid salts to water
Only tells wether a reaction will occur or not.
Is a process though which a solvent flows though a semipermeable membrane
Is an insulator apparatus that contains water or any liquid of known heat capacity
Law States that the total enthalpy of a chemical reaction is the sum of the enthalpy changes for the steps of the reaction
Having lower concentration of solute than other osmotic pressure than a surrounding medium
Is the study of the rate of chemical reactions,including the mechanism by which a reaction occurs and the different factors that affects it
Is the amount of pressure required to stop osmosis
Is the force used to transfer energy between a system and its surroundings and is needed to create heat and the transfer of thermal energy
Having a higher concentration of solutes than another solution or having excessive tension
Is the part of the universe being studied to which attention is focused
Is a measure of molecular randomness or disorder
Is the study of tquantitative relationshiphip between reactants in a chemical reactions
The amount of heat absorbed or released by a chemical reaction at constant atmospheric pressure.

31 Clues: A process called seeding • Are particles that ionize in a solutions • Only tells wether a reaction will occur or not. • Is a measure of molecular randomness or disorder • Is the amount of pressure required to stop osmosis • Is of the same phase as that of the reactants products • Occur from an ordered state to a more random arrangement • ...

Ava Fogarty's CrossWord 2024-05-15

Ava Fogarty's CrossWord crossword puzzle

Across

attractive force acting between two adjacent portions of a substance
that is composed of two or more separate elements
the quantitative property that is transferred to a body or to a physical system
substance that cannot be broken down
substance that can be observed in a chemical reaction
basic particles of the chemical elements
starting materials in a reaction
the amount of space the object takes up

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appearance or form of the matter changes but the kind of matter
natural science that deals principally with the properties of substances
quantitatively expresses the attribute of hotness or coldness.
leads to the chemical transformation of one set of chemical substances
energy that is transferred from one body to another
compound made up of two or more chemical components
one or more substances, the reactants, are converted to one or more different substances
anything that takes up space and can be weighed
smallest particle of a substance
attraction between atoms

18 Clues: attraction between atoms • smallest particle of a substance • starting materials in a reaction • substance that cannot be broken down • the amount of space the object takes up • basic particles of the chemical elements • anything that takes up space and can be weighed • that is composed of two or more separate elements • energy that is transferred from one body to another • ...

Chemical Reactions 2023-01-31

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The substance that is dissolved in a solution.
The substance formed during a reaction.
The starting substance in a chemical reaction.
The number written in front of a reactant or product.
A and B combine to form AB.
A replacement reaction where the atoms of one element replace the atoms of another element in a compound.
A solid produced during a chemical reaction.
The norm our class is currently in.

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AB breaks down to A and B.
The solvent used in an aqueous solution.
The chemical process where atoms of one substance are rearranged into different substances.
Oxygen combines with a substance and releases energy in the form of heat and light.
A replacement reaction where ions are exchanged between two compounds.
The substance that is more plentiful in a solution.
Milk was combined with this during our in class demonstration.

15 Clues: AB breaks down to A and B. • A and B combine to form AB. • The norm our class is currently in. • The substance formed during a reaction. • The solvent used in an aqueous solution. • A solid produced during a chemical reaction. • The substance that is dissolved in a solution. • The starting substance in a chemical reaction. • ...

Grade 9 Chemistry 2023-11-22

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A type of fuel
This is formed when charcoal burns
How many electrons fit in the first shell
This material can be used instead of glass to measure temperature changes in chemical reactions
This is formed with the combustion of hydrogen
An element with the chemical symbol Si
Rusting is this type of reaction
This is needed for combustion
These are found inside the nucleus
One of the noble gases
This is where you find electrons
An element with the chemical symbol Be
Dissolving this chemical is an endothermic process
In an exothermic reaction the temperature .........
Group 1 elements are known as the......
The chemical name for rust
He discovered the electron

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This substance added to citric acid is an endothermic reaction
In an endothermic reaction, the temperature .......
These atomic particles have no charge
Group 8 elements are known as .........
Group 7 elements are known as the........
A type of fuel
This is formed when calcium reacts with hydrochloric acid
He discovered the proton
These are on the left-hand side of the Periodic Table
One of the alkali metals
These are found on the right-hand side of the Periodic Table
20% of the air is this gas
An example of an endothermic process
How many electrons fit in the second shell

31 Clues: A type of fuel • A type of fuel • One of the noble gases • He discovered the proton • One of the alkali metals • 20% of the air is this gas • The chemical name for rust • He discovered the electron • This is needed for combustion • Rusting is this type of reaction • This is where you find electrons • This is formed when charcoal burns • These are found inside the nucleus • ...

WS 2 2022-01-26

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an organic reaction where two or more molecules combine to form a larger one
a molecular fragment that departs with a pair of electrons in heterolytic bond cleavage
Show movement of single electrons during the breaking of a bond
chemical reaction during which one functional group in a chemical compound is replaced by another functional group
consist of only hydrogens and carbons, creates rings
shows various electron pairs moving around
open chain compounds, whether straight or branched, has no rings of any type
an atom or molecule that in a chemical reaction seeks an atom or molecule containing an electron pair available for bonding

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consists of the simplest whole number ratio of atoms present in a compound
two molecules combine to form a single molecule
two stage reaction process of an addition reaction followed by elimination reaction
a compound whose molecule has the same number of atoms of each elements but different bonds
compounds that contain exactly the same # of atoms, different arrangement
a reactant that provides a pair of electrons to form a new covalent bond
substance added to a system to cause a chemical reaction

15 Clues: shows various electron pairs moving around • two molecules combine to form a single molecule • consist of only hydrogens and carbons, creates rings • substance added to a system to cause a chemical reaction • Show movement of single electrons during the breaking of a bond • a reactant that provides a pair of electrons to form a new covalent bond • ...

Chemistry Crossword 2017-11-07

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catalyst involved in chemical reactions in living things
pure substance formed when at least one metal and one non-metal combine
ability of a substance to conduct electricity or heat
change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones
the smallest part of an element that is representative of that element; a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons
group 2 elements in the periodic table; their reactivity is not as strong as that of the alkali metals
mass of one atom of an element calculated from the total number of protons,neutrons, and electrons of that atom; measured in atomic mass units (amu)
an experiment in which one or more products of a chemical reaction can escape
description of a solid that can be stretched into a long wire
reaction that takes place when two or more substances react to form new substances
measure of atomic mass; 1 amu is equal to 1/12th the mass of a carbon 12 atom
of mass principle that matter is not created or destroyed in a chemical reaction; the mass of the products always equals the mass of the reactants
pure substance that cannot be broken down into other substances; substance made up of only one type of atom

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an experiment in which all reactants and all products of a chemical reaction are accounted for
a material that electric charge can move through easily
description of how a substance interacts with other substances, such as acids;chemical properties are observable only when a chemical change occurs
chemical reaction that absorbs energy
atom that has become electrically charged because it has lost or gained electrons; a positive ion is an atom that has lost one or more electrons;a negative ion is an atom that has gained one or more electrons
combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
chemical reaction that releases energy
chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
number of protons in the nucleus of one atom of an element
group 17 elements in the periodic table;the most reactive non-metals
invisible negatively charged particle that orbits the nucleus of an atom

25 Clues: chemical reaction that absorbs energy • chemical reaction that releases energy • ability of a substance to conduct electricity or heat • a material that electric charge can move through easily • catalyst involved in chemical reactions in living things • number of protons in the nucleus of one atom of an element • ...

Chemistry Unit Review 2015-03-03

Across

A way of expressing information about a chemical reaction using chemical element symbols, numbers, and symbols like (), +, and →.
Elements left of the metalloid "staircase" on the periodic table; they are malleable, shiny, conduct heat and electrical current, and all but one are solids at room temperature
A chemical bond that involves the electrostatic attraction between oppositely charged ions.
A number, figure, symbol, or indicator that is smaller than the normal line of type and is set slightly below it. Represent how many atoms of a certain type are in a molecule.
The idea that, in physical changes and chemical reactions, matter can not be created or destroyed.
Donates OH- when in water, is bitter, corrodes tissues, turns red litmus blue.
A reaction where one single compound breaks down into two or more simple chemicals.
A material or liquid that will change to a known color when in the presence of a certain pH.
When a substance (or a few substances) change into another substance. The number and types of atoms are the same, but they are bonded together differently than before.
A substance that decomposes rapidly under certain conditions with the production of gases, which expand by the heat of the reaction. The energy released is used in firearms, blasting, and rocket propulsion
A chemical reaction where one component each of both the reacting molecules is switched to form the products.
A substance that is altered or incorporated into another substance in a chemical reaction. What you start with.
A group of elements with similar chemical properties. These tend to be associated with the vertical columns on the periodic table.
A system of information and labels related to hazardous materials designed to ensure the safety of employers and employees while at the workplace.
The elements on the right of the periodic table; they are brittle, do not conduct heat or electric current, and can be solids, liquids, or gases at room temperature.

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A type of double displacement reaction in which a strong acid and strong base react with each other to form water and salt.
A chemical equation that has coefficients to show how many of molecules of the reactants and the products are needed in order to conserve mass is described as this.
A sheet of information about the composition and properties of a chemical substance, as well as steps for handing and storing it safety.
A reaction where two or more chemicals combine to form a more complex product.
Icons that appear on household product labels to warn of possible dangers such as explosive, corrosive, flammable or poisonous.
A type of chemical reaction where a single element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
The rows in the periodic table are also known as this.
Donates H+ when in water, is sour, corrodes metal and tissues, turns blue litmus red.
Material that ignites easily and burns rapidly with a flame.
A substance used to neutralize acidity, especially in the stomach
A chemical bond that involves the sharing of electron pairs between atoms.
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
A scale ranging from 0 to 14, reflecting the concentration of hydrogen ions in solution (how acidic/basic a substance is).
A substance that will destroy and damage other substances with which it comes into contact.
A way of expressing information about a chemical reaction using words and symbols like + and →.
A number written in front of a chemical formula in a balanced chemical equation to show how many of that atom or molecule are present.
A way of expressing information about a chemical (molecule or ion) using chemical element symbols, numbers, and symbols like (), +, and -.
A solution containing a relatively small quantity of solute as compared with the amount of solvent. For example, if you add a lot of water to juice, it becomes this.
The substance(s) that are created during a chemical reaction. The end result.
A substance that is capable of causing the illness or death of a living organism when introduced or absorbed.

35 Clues: The rows in the periodic table are also known as this. • Material that ignites easily and burns rapidly with a flame. • A substance used to neutralize acidity, especially in the stomach • A chemical bond that involves the sharing of electron pairs between atoms. • The substance(s) that are created during a chemical reaction. The end result. • ...

Chemistry Crossword 2022-11-24

Across

Bonding performed in metals.
Bonding performed in most of covalent bonding.
Formed between a pair of electrons is shared between two atoms leading to noble gas electronic configurations.
Involes loss of electrons.
Unit of amount of substances, unit mol.
a reaction in which one element is substituted for another element in a compound.
Can be measured in g/dm3 or mol/dm3.
Bonding performed in diamonds and graphites.
Mass of an atom of a chemical element expressed in atomic mass units.

Down

Involves gain of electrons.
A substance that reduces another substance and is itself oxidized.
The sum of the relative atomic mass, also called as relative formula mass or ionic compounds.
A substance that oxidizes another substance and is itself reduced.
a chemical reaction where two reactant ionic compounds exchange ions to form two new product compounds with the same ions.
6.02*10^23
A strong electrostatic attraction between oppositely charged ions.
Compound is the number and type of different.
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances
is a process generally characterized by
the production of chemical compounds by reaction from simpler materials.

20 Clues: 6.02*10^23 • Involes loss of electrons. • Involves gain of electrons. • Bonding performed in metals. • Can be measured in g/dm3 or mol/dm3. • Unit of amount of substances, unit mol. • is a process generally characterized by • Bonding performed in diamonds and graphites. • Compound is the number and type of different. • Bonding performed in most of covalent bonding. • ...

Chemistry Unit Review 2015-03-03

Across

A way of expressing information about a chemical reaction using chemical element symbols, numbers, and symbols like (), +, and →.
Elements left of the metalloid "staircase" on the periodic table; they are malleable, shiny, conduct heat and electrical current, and all but one are solids at room temperature
A chemical bond that involves the electrostatic attraction between oppositely charged ions.
A number, figure, symbol, or indicator that is smaller than the normal line of type and is set slightly below it. Represent how many atoms of a certain type are in a molecule.
The idea that, in physical changes and chemical reactions, matter can not be created or destroyed.
Donates OH- when in water, is bitter, corrodes tissues, turns red litmus blue.
A reaction where one single compound breaks down into two or more simple chemicals.
A material or liquid that will change to a known color when in the presence of a certain pH.
When a substance (or a few substances) change into another substance. The number and types of atoms are the same, but they are bonded together differently than before.
A substance that decomposes rapidly under certain conditions with the production of gases, which expand by the heat of the reaction. The energy released is used in firearms, blasting, and rocket propulsion
A chemical reaction where one component each of both the reacting molecules is switched to form the products.
A substance that is altered or incorporated into another substance in a chemical reaction. What you start with.
A group of elements with similar chemical properties. These tend to be associated with the vertical columns on the periodic table.
A system of information and labels related to hazardous materials designed to ensure the safety of employers and employees while at the workplace.
The elements on the right of the periodic table; they are brittle, do not conduct heat or electric current, and can be solids, liquids, or gases at room temperature.

Down

A type of double displacement reaction in which a strong acid and strong base react with each other to form water and salt.
A chemical equation that has coefficients to show how many of molecules of the reactants and the products are needed in order to conserve mass is described as this.
A sheet of information about the composition and properties of a chemical substance, as well as steps for handing and storing it safety.
A reaction where two or more chemicals combine to form a more complex product.
Icons that appear on household product labels to warn of possible dangers such as explosive, corrosive, flammable or poisonous.
A type of chemical reaction where a single element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
The rows in the periodic table are also known as this.
Donates H+ when in water, is sour, corrodes metal and tissues, turns blue litmus red.
Material that ignites easily and burns rapidly with a flame.
A substance used to neutralize acidity, especially in the stomach
A chemical bond that involves the sharing of electron pairs between atoms.
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
A scale ranging from 0 to 14, reflecting the concentration of hydrogen ions in solution (how acidic/basic a substance is).
A substance that will destroy and damage other substances with which it comes into contact.
A way of expressing information about a chemical reaction using words and symbols like + and →.
A number written in front of a chemical formula in a balanced chemical equation to show how many of that atom or molecule are present.
A way of expressing information about a chemical (molecule or ion) using chemical element symbols, numbers, and symbols like (), +, and -.
A solution containing a relatively small quantity of solute as compared with the amount of solvent. For example, if you add a lot of water to juice, it becomes this.
The substance(s) that are created during a chemical reaction. The end result.
A substance that is capable of causing the illness or death of a living organism when introduced or absorbed.

enzymess 2026-03-03

Across

Organic cofactors
Reduce or stop enzymatic function
Energy required to start any reaction
Absorption of energy
Chemical reactions in a living cell
Breakdown of larger molecules
Release of energy
Aftef undergoing chemical reaction

Down

Substrate specific
Flexible active site
Before undergoing chemical reaction
Formation of larger molecules

12 Clues: Organic cofactors • Release of energy • Substrate specific • Flexible active site • Absorption of energy • Formation of larger molecules • Breakdown of larger molecules • Reduce or stop enzymatic function • Aftef undergoing chemical reaction • Before undergoing chemical reaction • Chemical reactions in a living cell • Energy required to start any reaction

science 2023-10-31

Across

- Carbon-based compounds.
- Large molecule chain.
- Shared electron bonds.
- Same formula, different structure.
- Two or more elements combined.
- Amount of solute.
- Only hydrogen and carbon.
- Conducts electricity in solution.
- Charged particle.
- Organic functional group.
- Opposite of an acid.
- Measuring substance concentration.
- Study of reaction rates.
- Transfer of electrons.
- Balancing chemical equations.
- Mole concept founder.
- A substance made of one type of atom.

Down

- Oxidation-reduction reaction.
- Chemical transformation of substances.
- Sour, corrosive substance.
- A group of atoms bonded together.
- Dissolving substance.
- Variant of an element.
- Soluble base.
- Arrangement of elements.
- Speeds up a reaction.
- Measure of acidity.
- Solid to gas transition.
- Connection between atoms.
- Solid formed in solution.

30 Clues: - Soluble base. • - Amount of solute. • - Charged particle. • - Measure of acidity. • - Opposite of an acid. • - Large molecule chain. • - Dissolving substance. • - Speeds up a reaction. • - Mole concept founder. • - Shared electron bonds. • - Variant of an element. • - Transfer of electrons. • - Carbon-based compounds. • - Arrangement of elements. • - Solid to gas transition. • ...

Ch. 11 Vocab - Chemistry I 2022-03-04

Ch. 11 Vocab - Chemistry I crossword puzzle

Across

- small whole numbers that are placed in front of the formulas in an equation in order to balance it
-chemical equation that does not indicate the relative amounts of the reactants and products
-representation of a chemical reaction
-a chemical change in which two or more substances react to form a single new substance
-a chemical change involving an exchange of positive ions between two compounds
- a chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat or light

Down

-in which each side of the equation has the same number of atoms of each element and mass is conserved
-a chemical change in which a single compound breaks down into or more simpler products
-a chemical change in which one element replaces a second element in a compound
-lists metals in order of decreasing activity
-a substance that speeds up the reaction but is not used up in the reaction

11 Clues: -representation of a chemical reaction • -lists metals in order of decreasing activity • -a substance that speeds up the reaction but is not used up in the reaction • -a chemical change in which one element replaces a second element in a compound • -a chemical change involving an exchange of positive ions between two compounds • ...

IPC Crossword #2 2025-09-02

Across

– Substance present before a chemical reaction.
– Distance from crest to crest of a wave.
– Change in velocity over time.
– Ability to do work.
– Height of a wave.
of Conservation of Energy – Energy cannot be created or destroyed, only changed.
First Law – An object in motion stays in motion unless acted on.
Energy – Stored energy.
– Force applied over a distance.
Bond – Bond formed when atoms share electrons.
Formula – Symbols showing the elements in a compound.
– Substance with a pH below 7.
Second Law – Force equals mass times acceleration (F=ma).
– Substance formed after a chemical reaction.
– Path through which electric current flows.

Down

– Reaction that absorbs heat energy.
– Force that resists motion between surfaces.
– Number of waves that pass a point in a second.
– Reaction between an acid and a base.
– Rate of doing work.
Energy – Energy of motion.
– Reaction that releases heat energy.
– Repeating disturbance that transfers energy.
– Mass times velocity.
Bond – Bond formed when electrons are transferred.
– Tendency of an object to resist a change in motion.
Third Law – For every action, there is an equal and opposite reaction.
– Substance with a pH above 7.
– Speed in a given direction.
– A push or pull on an object.

30 Clues: – Height of a wave. • – Rate of doing work. • – Ability to do work. • – Mass times velocity. • Energy – Stored energy. • Energy – Energy of motion. • – Speed in a given direction. • – Substance with a pH above 7. • – Substance with a pH below 7. • – A push or pull on an object. • – Change in velocity over time. • – Force applied over a distance. • – Reaction that absorbs heat energy. • ...

Science Cross Word 2025-02-07

Across

a basic unit of a chemical element
of Conservation of energy energy is neither created nor destroyed
the amount of specific substance
a connection between two surfaces
Energy the energy combined within a system that's responsible for its temperature
the substance that are formed as an result of a chemical reaction
Reactions ionic structure of a substance

Down

Reaction A chemical reaction that releases energy by light or heat
a substance that undergoes a chance to form a new substance called "products"
Potential Energy the energy stored in the chemical bonds of a substance
Reaction any chemical reaction that absorbs heat from it's environment
a substance that is dissolved in a solution

PHYSICAL AND CHEMICAL CHANGES 2017-09-22

PHYSICAL AND CHEMICAL CHANGES crossword puzzle

Across

A change in which a new substance is formed.
A solid in which atoms are arranged in a regular pattern.
The new substance formed in a chemical reaction.
Substance formed when two chemicals in solution form react and settles down.
It is caused during exothermic reaction.
The original substance participating in a chemical reaction.
The process of depositing a layer of zinc on iron.
A change in which no new substance is formed.
Reaction in which a compound breaks up into two or more substance.

Down

A commonly used technique for the purification of substance.
It is caused during endothermic reaction.
Substance when formed when iron is exposed to moist iron.
Reaction in which two or more substances combine to form a single substance.
It is also called chemical change.

14 Clues: It is also called chemical change. • It is caused during exothermic reaction. • It is caused during endothermic reaction. • A change in which a new substance is formed. • A change in which no new substance is formed. • The new substance formed in a chemical reaction. • The process of depositing a layer of zinc on iron. • ...

Chemistry Unit Review 2015-03-03

Across

A way of expressing information about a chemical reaction using chemical element symbols, numbers, and symbols like (), +, and →.
Elements left of the metalloid "staircase" on the periodic table; they are malleable, shiny, conduct heat and electrical current, and all but one are solids at room temperature
A chemical bond that involves the electrostatic attraction between oppositely charged ions.
A number, figure, symbol, or indicator that is smaller than the normal line of type and is set slightly below it. Represent how many atoms of a certain type are in a molecule.
The idea that, in physical changes and chemical reactions, matter can not be created or destroyed.
Donates OH- when in water, is bitter, corrodes tissues, turns red litmus blue.
A reaction where one single compound breaks down into two or more simple chemicals.
A material or liquid that will change to a known color when in the presence of a certain pH.
When a substance (or a few substances) change into another substance. The number and types of atoms are the same, but they are bonded together differently than before.
A substance that decomposes rapidly under certain conditions with the production of gases, which expand by the heat of the reaction. The energy released is used in firearms, blasting, and rocket propulsion
A chemical reaction where one component each of both the reacting molecules is switched to form the products.
A substance that is altered or incorporated into another substance in a chemical reaction. What you start with.
A group of elements with similar chemical properties. These tend to be associated with the vertical columns on the periodic table.
A system of information and labels related to hazardous materials designed to ensure the safety of employers and employees while at the workplace.
The elements on the right of the periodic table; they are brittle, do not conduct heat or electric current, and can be solids, liquids, or gases at room temperature.

Down

A type of double displacement reaction in which a strong acid and strong base react with each other to form water and salt.
A chemical equation that has coefficients to show how many of molecules of the reactants and the products are needed in order to conserve mass is described as this.
A sheet of information about the composition and properties of a chemical substance, as well as steps for handing and storing it safety.
A reaction where two or more chemicals combine to form a more complex product.
Icons that appear on household product labels to warn of possible dangers such as explosive, corrosive, flammable or poisonous.
A type of chemical reaction where a single element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
The rows in the periodic table are also known as this.
Donates H+ when in water, is sour, corrodes metal and tissues, turns blue litmus red.
Material that ignites easily and burns rapidly with a flame.
A substance used to neutralize acidity, especially in the stomach
A chemical bond that involves the sharing of electron pairs between atoms.
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
A scale ranging from 0 to 14, reflecting the concentration of hydrogen ions in solution (how acidic/basic a substance is).
A substance that will destroy and damage other substances with which it comes into contact.
A way of expressing information about a chemical reaction using words and symbols like + and →.
A number written in front of a chemical formula in a balanced chemical equation to show how many of that atom or molecule are present.
A way of expressing information about a chemical (molecule or ion) using chemical element symbols, numbers, and symbols like (), +, and -.
A solution containing a relatively small quantity of solute as compared with the amount of solvent. For example, if you add a lot of water to juice, it becomes this.
The substance(s) that are created during a chemical reaction. The end result.
A substance that is capable of causing the illness or death of a living organism when introduced or absorbed.

Chemical & Physical Changes 2024-02-15

Chemical & Physical Changes crossword puzzle

Across

How an object looks and feels
Reaction between iron and oxygen/produces rust
New substance formed after chemical reaction
Change that results in a new substance
Added to cause a chemical reaction/gets used up

Down

Things about an object that determine how it reacts
Change in size, shape, color of object
One chemical change causes others to occur
Added to cause a chemical reaction
Makes up objects/held together with strong bonds

10 Clues: How an object looks and feels • Added to cause a chemical reaction • Change in size, shape, color of object • Change that results in a new substance • One chemical change causes others to occur • New substance formed after chemical reaction • Reaction between iron and oxygen/produces rust • Added to cause a chemical reaction/gets used up • ...

vocab 2022-09-06

Across

closed system
malleability
chemical change
element
open system
flammability
ductility
luster
exothermic reaction
matter

Down

solubility
heterogeneous mixture
substance pure substance
mixture
homogeneous mixture
physical change
Insoluble
endothermic reaction
solution
compound

vocab 2022-09-06

Across

closed system
malleability
chemical change
element
open system
flammability
ductility
luster
exothermic reaction
matter

Down

solubility
heterogeneous mixture
substance pure substance
mixture
homogeneous mixture
physical change
Insoluble
endothermic reaction
solution
compound

Crossword on Chemistry 2012-08-25

Across

A subatomic particle with a positive charge
Any form of a certain element that contains different numbers of neutrons than the other versions
Creator of the first version of the periodic table
The group of elements that are highly reactive
A representation of a chemical reaction
mass The sum of the numbers of protons and neutrons in an atom
A substance that changes the rate or a chemical reaction
A group of atoms held together by bonds
A reaction in which one or more substances combine to form a new one
A homogeneous mixture
When two or more atoms join together, they form _______
A substance that has only one particle is referred to as a ______ substance
A particle that has gained or lost an electron

Down

The substance will remain the same through a __________change
A combination of chemical symbols and numbers
A substance that forms in a chemical reaction
The particle of an element
An element that loses electron/s when forming bonds
A mixture where the components are easily seen, and are able to be physically separated
A subatomic particle with a negative charge
A change where the substance/s themselves are changed
The subatomic particle that has no charge
This is the eighth element on the periodic table
Helium, neon, and krypton belong in this group of elements

24 Clues: A homogeneous mixture • The particle of an element • A representation of a chemical reaction • A group of atoms held together by bonds • The subatomic particle that has no charge • A subatomic particle with a positive charge • A subatomic particle with a negative charge • A combination of chemical symbols and numbers • A substance that forms in a chemical reaction • ...

Photosynthesis and Matter Cycling 2023-04-13

Photosynthesis and Matter Cycling crossword puzzle

Across

green pigment that is necessary for the reactions in photosynthesis
chemical reaction that breaks down sugars and releases chemical energy
a type of chemical reaction that can happen without oxygen
the molecule inhaled by plants and exhaled by humans
a nutrient that enters through the root system and is critical for plant amino acids
brought into the plant through root systems
the element upon which all life on earth is based, atomic number 6
the sugar molecule used by plants as a structural material
small photosynthetic organisms in the world's oceans creating 50% of all oxygen
this cannot be created or destroyed, it only transforms
Lifeforms responsible for breaking down the dead remains of other life

Down

plant respiration happens through these holes
chemical reaction that captures solar energy by combining carbon dioxide and water into sugars
the molecule inhaled by animals and exhaled by plants
a style of chemical reaction that requires oxygen
plant organelle that where photosynthesis takes place
when water vapor is released from plants it increases this in the atmosphere
the general term for life that must eat other life forms for energy
the source of all energy used by life on our plant
the sugar molecule used by many life forms as an energy source
the general term for life that can perform photosynthesis (an autotroph)

21 Clues: brought into the plant through root systems • plant respiration happens through these holes • a style of chemical reaction that requires oxygen • the source of all energy used by life on our plant • the molecule inhaled by plants and exhaled by humans • the molecule inhaled by animals and exhaled by plants • plant organelle that where photosynthesis takes place • ...

Skibidi chem crossword 2025-03-21

Across

The tiniest piece of an element. (4)
Atoms of the same element with different numbers of neutrons. (8)
A large molecule made of repeating smaller units. (7)
A reaction that releases heat. (11)
How much mass is in a certain amount of space. (7)
Burning, a chemical reaction with oxygen. (10)
The process that happens when a solid turns straight into a gas. (11)
The loss of electrons during a reaction. (9)
A process that can determine the concentration of a solution. (9)
A reaction that absorbs heat. (11)
A substance that will dissolve into a liquid. (6)
A pure substance made of one type of atom. (7)
When a liquid turns into a gas. (11)

Down

A mixture of metals. (5)
Gradual destruction of materials by chemical reactions. (9)
When a gas turns into a liquid. (12)
The gain of electrons during a reaction. (9)
When an acid and base react. (13)EVAPORATION When a liquid turns into a gas. (11)
Emitting energy or particles from an unstable atom. (11)
The number of chemical bonds an atom can form. (7)
The amount of solute there is in a specific volume of the solvent. (13)
A substance that tells you the pH of an acid or alkaline. (9)
Two or more atoms stuck together. (8)
A solution that forms when a solute dissolves in a solvent. (8)
A substance that dissolves another substance. (7)
When a liquid turns into a solid. (8)
A substance that speeds up a chemical reaction. (9)

27 Clues: A mixture of metals. (5) • A reaction that absorbs heat. (11) • A reaction that releases heat. (11) • When a gas turns into a liquid. (12) • The tiniest piece of an element. (4) • When a liquid turns into a gas. (11) • Two or more atoms stuck together. (8) • When a liquid turns into a solid. (8) • The gain of electrons during a reaction. (9) • ...

Jack Etue- Chapter 13 2016-10-12

Across

Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction
A measure of the acidity of a solution
Description of a chemical reaction in which there is a net release of energy
The reacting substances in a chemical reaction
The process by which a reactant loses one or more elctrons
Description of a solution in which the hydronium ion concentration is higher than the hydroxide ion concentration
Description of a chemical reaction in which there is a net absorption of energy
A polyatomic ion made by removing a proton from a water molecule

Down

A substance that accepts hydrogen ions.
The deterioration of a metal,typically caused by atmospheric oxygen
A substance that donates hydrogen ions
A rapid exothermic oxidation-reduction reaction between a material and molecular oxygen
a polyatomic ion made by adding a proton to a water molecule
Description of a solution in which the hydronium ion concentration is equal to the hydroxide ion concentration
A solution in which the hydroxide ion concentration is higher than the hydronium ion concentration;aka alkaline

15 Clues: A substance that donates hydrogen ions • A measure of the acidity of a solution • A substance that accepts hydrogen ions. • The reacting substances in a chemical reaction • The process by which a reactant loses one or more elctrons • a polyatomic ion made by adding a proton to a water molecule • A polyatomic ion made by removing a proton from a water molecule • ...

Types of reactions 2024-05-13

Across

reaction in which two molecules exchange ions
agent element reduced in an equation
reaction in which both oxidation no reduction takes place
agent Element which increases in oxygen
a natural process that converts a refined metal into a more chemically stable oxide.
a type of decomposition reaction in which the activation energy for decomposition is provided in the form of electrical energy
reaction in which two or more substances combine to form a single new substance.
pungent smell produced by food

Down

a chemical reaction that happens when a compound breaks down when heated.
a form of double-displacement reaction that takes place between acids and bases.
reaction in which a compound breaks down into two or more simpler substances
a subclass of exchange reactions that occur between ionic compounds when one of the products is insoluble.
It is a chemical reaction in which a chemical compound is broken down by photons.
reaction in which a metal displaces a less reactive metal

14 Clues: pungent smell produced by food • agent element reduced in an equation • agent Element which increases in oxygen • reaction in which two molecules exchange ions • reaction in which both oxidation no reduction takes place • reaction in which a metal displaces a less reactive metal • a chemical reaction that happens when a compound breaks down when heated. • ...

Dunn-Chapter13 2016-10-05

Across

The amount of energy required to pull two boned atoms apart, which is the same as the amount of energy released when the two atoms are brought together into a bond.
Description of a chemical reaction in which there is a net absorption of energy.
A substance that accepts hydrogen ions.
The minimum energy required in order for a chemical reaction to proceed.
A substance that donates hydrogen ions.
A rapid exothermic oxidation-reduction reaction between a material and molecular oxygen.
Description of a solution in which the hydronium ion concentration is higher than the hydroxide ion concentration.

Down

Description of a substance that can behave as either an acid or a base.
A representation of a chemical reaction in which reactant are written to the left of an arrow that points toward the products on the right.
One half of an oxidation-reduction reaction, represented by an equation showing electrons as either reactants or products.
A polyatomic ion made by adding a proton (hydrogen on) to a water molecule.
Description of a chemical reaction in which there is a net release of energy.
A polyatomic ion made by removing a proton (hydrogen ion) from a water molecule.
Any substance that increases the rate of a chemical reaction without itself being consumed by the reaction.
Description of a solution in which the hydroxide ion concentration is higher than the hydroium ion concentration; also sometimes called 'alkaline'.

15 Clues: A substance that accepts hydrogen ions. • A substance that donates hydrogen ions. • Description of a substance that can behave as either an acid or a base. • The minimum energy required in order for a chemical reaction to proceed. • A polyatomic ion made by adding a proton (hydrogen on) to a water molecule. • ...

Chemical Changes Vocabulary 2023-11-06

Chemical Changes Vocabulary crossword puzzle

Across

substance that speeds up the rate of a chemical reaction
A substance that slows down or stops a chemical reaction
A reaction that ABSORBS energy in the form of heat
Energy needed to get a reaction started

Down

A reaction that releases energy in the form of heat
a change in the state of matter, no new substance
substance that is present at the start of a chemical reaction
A change that forms new substances with different properties
A solid that forms from a solution during a chemical reaction.
A substance produced in a chemical reaction

10 Clues: Energy needed to get a reaction started • A substance produced in a chemical reaction • a change in the state of matter, no new substance • A reaction that ABSORBS energy in the form of heat • A reaction that releases energy in the form of heat • substance that speeds up the rate of a chemical reaction • A substance that slows down or stops a chemical reaction • ...

Grade 9 Chemistry 2023-11-22

Across

An example of an endothermic process
The chemical name for rust
This is formed when calcium reacts with hydrochloric acid
20% of the air is this gas
An element with the chemical symbol Be
Group 8 elements are known as .........
This is where you find electrons
Group 7 elements are known as the........
This is formed when charcoal burns
How many electrons fit in the second shell
Group 1 elements are known as the......
Rusting is this type of reaction
One of the noble gases
He discovered the proton
A type of fuel

Down

These are found inside the nucleus
This material can be used instead of glass to measure temperature changes in chemical reactions
This substance added to citric acid is an endothermic reaction
These are found on the right-hand side of the Periodic Table
These atomic particles have no charge
How many electrons fit in the first shell
In an endothermic reaction, the temperature .......
These are on the left-hand side of the Periodic Table
An element with the chemical symbol Si
chloride Dissolving this chemical is an endothermic process
One of the alkali metals
In an exothermic reaction the temperature .........
This is formed with the combustion of hydrogen
He discovered the electron
This is needed for combustion

30 Clues: A type of fuel • One of the noble gases • One of the alkali metals • He discovered the proton • The chemical name for rust • 20% of the air is this gas • He discovered the electron • This is needed for combustion • This is where you find electrons • Rusting is this type of reaction • These are found inside the nucleus • This is formed when charcoal burns • ...

stoichiometry concepts 2024-04-02

Across

the number of units in one mole of any substance equals 6.02 x 10¨23
numbers or symbols by which another number is multiply
like a seesaw perfectly leveled. Both sides have the same number of atoms
the weight of a mole of a substance
ratio between the number of substances involved in a chemical reaction expressed by coefficients.
substance changing the reaction to produce new substance products.
symbolic representation of a chemical reaction.

Down

reactant in a chemical reaction that remains unconsumed after the reaction takes place.
process where one or more substances known as reactants are converted into different substances known as products, through breaching and forming
substance that is completely consumed or used up first, limiting the amount of product that can be formed.
small number slightly below and to the right of an element's symbol. It indicates the number of atoms in an element.
the calculation of products and reactants in a chemical reaction.
new substances formed as a result of the reaction (final dish)
huge pack of something 6.092 x 10¨23 items
mass of one substance/mass of another substance.

15 Clues: the weight of a mole of a substance • huge pack of something 6.092 x 10¨23 items • symbolic representation of a chemical reaction. • mass of one substance/mass of another substance. • numbers or symbols by which another number is multiply • new substances formed as a result of the reaction (final dish) • ...

week 3 vivian doan 2015-07-06

Across

What type of reaction is this A+B->AB
What type of reaction is this HCL+NaOH->H2O+NaCl
The amount of each reactant and product is represented with?
This reaction happens when one element in a pair is replaced by another
What are the 7 elements that are always found in pairs
6.022 x 10^23 is a
What do you balance last when balancing chemical equations
A reaction speeds up if this is present

Down

What reaction will always have O2 as a reactant and CO2 and H2O as products
AB->A+B is what type of reaction?
What type of reaction occurs when two element pairs switch partners
This symbol means "dissolved in water"
When a reaction GAINS energy, it's what type of reaction
When a reaction LOSES energy, it's what type of reaction
The arrow in a chemical equations means to?

15 Clues: 6.022 x 10^23 is a • AB->A+B is what type of reaction? • What type of reaction is this A+B->AB • This symbol means "dissolved in water" • A reaction speeds up if this is present • The arrow in a chemical equations means to? • What type of reaction is this HCL+NaOH->H2O+NaCl • What are the 7 elements that are always found in pairs • ...

3.1 glossary 2016-10-06

Across

chemicals that take part in a chemical reaction
a reaction that uses oxygen to release energy stored in glucose
a rapid reaction eith oxygen that releases energy in the form of heat and/or light
hydrated iron oxide
a chemical reaction that releases energy
highly combustile chemicals

Down

a chemical reaction that has the same numbers of each atom on both side of the arrow
a chemical reaction that absorbs energy
a way of protecting aluminium from corrosing by deliberately creating a layer of aluminium oxide over it
chemicals produced in a chemical reaction

10 Clues: hydrated iron oxide • highly combustile chemicals • a chemical reaction that absorbs energy • a chemical reaction that releases energy • chemicals produced in a chemical reaction • chemicals that take part in a chemical reaction • a reaction that uses oxygen to release energy stored in glucose • ...

unit 2 study 2024-10-02

Across

breaks down bacteria from other organisms
turns glucose into pyruvate
cycle that uses oxygen to produce energy
envelope of gasses the earth or other planets
transfers and provides cell with energy
sphere with lakes and ponds
a source of energy
uses light energy to make molecules neccesary for next step of photosynthesis
absence if free oxygen
sphere where life lives
a chemical element

Down

process where plants turn light energy into chemical energy
any substance that has mass and takes up space
sphere with rocks and minerals
membrane cell organelles
gives green plants their pigment
chemical reactions that break down glucose
substance that changes into a chemical reaction
involves free oxygen
carbon reaction

20 Clues: carbon reaction • a source of energy • a chemical element • involves free oxygen • absence if free oxygen • sphere where life lives • membrane cell organelles • turns glucose into pyruvate • sphere with lakes and ponds • sphere with rocks and minerals • gives green plants their pigment • transfers and provides cell with energy • cycle that uses oxygen to produce energy • ...

UNIT 4 REVIEW 2018-01-24

Across

substance that is formed as the result of a chemical reaction
the conversion factor that relates the amount in moles of any two substances in a chemical reaction
is a type of chemical reaction where two compounds react, and the cations and the anions of the two reactants switch places, forming two new compounds or products
founder of stoichiometry
founder of mole
an element reacts with a compound and takes the place of another element in that compound
a numerical or constant quantity placed before and multiplying the variable in an algebraic expression
the calculations between the relationships between molecules in a given reaction
reaction in which multiple reactants combine to form a single product

Down

this is the efficiency of the reaction
the mass of an element divided by the total mass present multiplied by 100%
a process in which one or more substances, the reactants, are converted to one or more different substances, the products
6.022x10^23
a substance that takes part in and undergoes change during a reaction
occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water

15 Clues: 6.022x10^23 • founder of mole • founder of stoichiometry • this is the efficiency of the reaction • substance that is formed as the result of a chemical reaction • a substance that takes part in and undergoes change during a reaction • reaction in which multiple reactants combine to form a single product • ...

AP Chem Chapter 17 Creation 2023-12-07

AP Chem Chapter 17 Creation crossword puzzle

Across

chemical reactions occur faster at _________ temperatures
rate __________ that are mathematical expressions that describe the relationship between the rate of a chemical reaction and the concentration of its reactants
species that are produced in one step and consumed in a subsequent step
rate laws cannot be predicted by reaction ____________ but determined experimentally
determine a second form of each rate law that relates the concentrations of reactions and time called _________ rate laws
at any specific time where the rate at which a reaction is proceeding

Down

___________ catalyst that is present in the same phase as the reactants
theory that states that a chemical reaction can only occur between particles when they collide
instantaneous rate of a reaction at time zero
substances that function to increase the rate of a reaction
rate of ________ s the change in the amount of reactant or product per unit time
___________ catalyst that is present in a different phase than the reactants (usually a solid)
a state when reactant species collide with both proper orientation and adequate energy and combine to form unstable species
number of factors that typically affect the rates of chemical reactions
these line slopes may be evaluated using calculus

15 Clues: instantaneous rate of a reaction at time zero • these line slopes may be evaluated using calculus • chemical reactions occur faster at _________ temperatures • substances that function to increase the rate of a reaction • at any specific time where the rate at which a reaction is proceeding • ___________ catalyst that is present in the same phase as the reactants • ...

Chemistry 2025-05-22

Across

one or more substance converted into a different substance
holds molecules together and create connections
everything that takes up space
change changes in display of a object
when two substances are combined but not chemically
thermal energy that transforms when they come in contact with other objects
starting materials in a reaction
a substance that cannot be broken down
the amount of space occupied by matter
basic particles

Down

the scientific study of elements
two or more atoms that form chemical bonds
substance formed by a chemical reaction
measure of hot or cold
change a substance is transformed into a new substance
the weight of an object
the capacity of doing work
elements are chemically bonded

18 Clues: basic particles • measure of hot or cold • the weight of an object • the capacity of doing work • everything that takes up space • elements are chemically bonded • the scientific study of elements • starting materials in a reaction • change changes in display of a object • a substance that cannot be broken down • the amount of space occupied by matter • ...

IGCSE - Topic 4 - Electrochemistry 2023-12-04

IGCSE - Topic 4 - Electrochemistry crossword puzzle

Across

A conductor through which electric current enters or leaves an electrolyte.
An electrochemical cell that uses electrical energy to drive a non-spontaneous chemical reaction.
The deterioration of a metal due to a chemical reaction with its environment.
The electrode where reduction occurs, and electrons are gained in an electrochemical cell.
The process of coating an object with a layer of metal using electrolysis.

Down

The study of the interchange of chemical and electrical energy.
A chemical reaction involving both oxidation and reduction processes.
The loss of electrons by a substance during a chemical reaction.
The gain of electrons by a substance during a chemical reaction.
An electrochemical cell that converts chemical energy directly into electrical energy by combining a fuel (e.g., hydrogen) with an oxidizing agent (e.g., oxygen).
A substance that conducts electricity when dissolved in water or in a molten state.
The electrode where oxidation occurs, and electrons are released in an electrochemical cell.

12 Clues: The study of the interchange of chemical and electrical energy. • The loss of electrons by a substance during a chemical reaction. • The gain of electrons by a substance during a chemical reaction. • A chemical reaction involving both oxidation and reduction processes. • The process of coating an object with a layer of metal using electrolysis. • ...

Chemical Reactions 2023-10-15

Across

Combines with glucose during cellular respiration
held in common by two or more things
Characteristics that let us tell the difference between things
A reaction that absorbs heat energy
A substance or molecule that goes through a reaction
A molecule made of two or more elements
A reaction that releases heat energy
Type of change where matter keeps its chemical identity, but changes its form
Type of change that results in new products
A substance that forms in a chemical reaction

Down

this law states that matter cannot be created or destroyed
Organelle that does cellular respiration
Made of the same type of atom
Cannot be undone
Organelle that transforms sunlight to glucose

15 Clues: Cannot be undone • Made of the same type of atom • A reaction that absorbs heat energy • held in common by two or more things • A reaction that releases heat energy • A molecule made of two or more elements • Organelle that does cellular respiration • Type of change that results in new products • Organelle that transforms sunlight to glucose • ...

Enzymes 2024-11-19

Across

the amount of energy needed to make a chemical reaction start
another word for "reactants"
all the chemical reactions within the cell
changing a chemical reaction by how acid a solution is
releases energy

Down

proteins that speed up biochemical reactions by lowering activation energy
when an enzyme's active site gets deformed and loses its specific shape
substances that are made by a chemical reaction
the breaking a forming of bonds between different substances during chemical changes
substances that are changed in a chemical reaction
absorbs energy

11 Clues: absorbs energy • releases energy • another word for "reactants" • all the chemical reactions within the cell • substances that are made by a chemical reaction • substances that are changed in a chemical reaction • changing a chemical reaction by how acid a solution is • the amount of energy needed to make a chemical reaction start • ...

November 14th Science 2025-11-14

Across

The Mascot for the team gentry is playing tonight.
Type of chemical reaction where the substance changes.
An if, then statement that predicts the what will happen in the future.
Type of eclipse that occurs when the moon casts a shadow on the earth.
Where the pioneer football team is playing tonight.
Reaction that occurs when heat is absorbed in the reaction.
When you use your five senses to determine exactly what is happening.
A guess about what is happening right now using context clues.
Variable that tells us what we want to know / results.

Down

A guess about what will happen in the future based on context clues.
Type of chemical reaction where the appearance of the object changes but the substance does not.
Variable that stays the same throughout the experiment.
Reaction that occurs when heat is released from the reaction.
Variable that we change in an experiment.
The celestial object that orbits the Earth
Name of the Gentry Schools Mascot.
Type of eclipse that occurs when the earth casts a shadow on the moon.

17 Clues: Name of the Gentry Schools Mascot. • Variable that we change in an experiment. • The celestial object that orbits the Earth • The Mascot for the team gentry is playing tonight. • Where the pioneer football team is playing tonight. • Type of chemical reaction where the substance changes. • Variable that tells us what we want to know / results. • ...

Chemistry Crossword 2017-11-07

Across

pure substance that cannot be broken down into other substances; substance made up of only one type of atom
group 17 elements in the periodic table;the most reactive non-metals
description of how a substance interacts with other substances, such as acids;chemical properties are observable only when a chemical change occurs
reaction that takes place when two or more substances react to form new substances
the smallest part of an element that is representative of that element; a neutral particle made up of a nucleus containing protons and neutrons, and in which the number of electrons equals the number of protons
a material that electric charge can move through easily
description of a solid that can be stretched into a long wire
group 2 elements in the periodic table; their reactivity is not as strong as that of the alkali metals
combination of symbols that represent a compound; the formula identifies the elements in the compound and the amount of each element
change that results when two or more substances react to create a different substance or substances; the new substances have completely different properties from the original ones
mass of one atom of an element calculated from the total number of protons,neutrons, and electrons of that atom; measured in atomic mass units (amu)
chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
of mass 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 one or more products of a chemical reaction can escape

Down

invisible negatively charged particle that orbits the nucleus of an atom
pure substance formed when at least one metal and one non-metal combine
number of protons in the nucleus of one atom of an element
group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
chemical reaction that releases energy
chemical reaction that absorbs energy
ability of a substance to conduct electricity or heat
measure of atomic mass; 1 amu is equal to 1/12th the mass of a carbon 12 atom
an experiment in which all reactants and all products of a chemical reaction are accounted for
atom that has become electrically charged because it has lost or gained electrons; a positive ion is an atom that has lost one or more electrons;a negative ion is an atom that has gained one or more electrons
catalyst involved in chemical reactions in living things

Unit 2 2026-03-27

Across

allows certain moleclues to enter the cell
moving molecules across the menbrane without ATP
uses ATP to transport
anti-water
diffusion involving water
a living thing
creates chemical reactions(Matabolism)
have jobs/work inside the cell
Combination of atoms
likes water
when the active site is deformed

Down

where the chemical reaction takes place in a enzyme
energy used to make chemical reactions
many organs working together
lots of different cells
a molecule containing a hydrophilic head and two hydrophobic tails
many different tissues
molecules move from high consentration to low consentration
basic unit of matter
result of a chemical reaction in the active site
basic unit of life
goes into an active site

22 Clues: anti-water • likes water • a living thing • basic unit of life • basic unit of matter • Combination of atoms • uses ATP to transport • many different tissues • lots of different cells • goes into an active site • diffusion involving water • many organs working together • have jobs/work inside the cell • when the active site is deformed • energy used to make chemical reactions • ...

Galvanic Cells 2026-03-09

Across

a mnemonic device used to help recall the chemical reaction occurring at the anode
undergoes oxidation
the _______ red cat sits high
any solution that contains dissolved
the type of energy that is utilised for the reaction
each cell contains a ________ redox pair.
a term that describes how the Electrochemical series can only be applied to some conditions
reduction occurs at this location
oxidation occurs at this location
a _______ difference exists between two half-cells and can be determined at SLC using the Data Book
undergoes reduction
a mnemonic device used to help recall the chemical reaction occurring at the cathode
the type of energy that is harnessed by the Galvanic cell

Down

allows for the flow of ions and completes the circuit
negatively-charged ion
as the half-cells are separated in a galvanic cell, this reaction allows for ___ - _______ chemical reactions.
a tool in the Data Book used to solve for oxidants and reductants
if all reactants are placed in the same half-cell, the reaction will be _________ .
a mnemonic device used to help recall the flow of electrons in a galvanic cell
measures the flow of electrons in a circuit
the _______ electrocuted red cat sits low
galvanic cells are not 100% __________ and release some thermal energy
positively-charge metal ion
a term that describes the overall reaction of two half-cells
when a number of cells are joined together, resulting in increased potential electrical energy

25 Clues: undergoes oxidation • undergoes reduction • negatively-charged ion • positively-charge metal ion • the _______ red cat sits high • reduction occurs at this location • oxidation occurs at this location • any solution that contains dissolved • the _______ electrocuted red cat sits low • each cell contains a ________ redox pair. • measures the flow of electrons in a circuit • ...

Organic Chem 2022-01-26

Across

organic compounds- An organic compound in which all the carbon atoms are connected by single bonds.
fission- chemical bond dissociation of a molecular bond by a process where each of the fragments (an atom or molecule) retains one of the originally bonded electrons. As a result the bonded electrons are equally shared
to or denoting organic compounds in which carbon atoms form open chains (as in the alkanes), not aromatic rings.
formula- a formula which shows the arrangement of atoms in the molecule of a compound.
reaction- a type of chemical reaction where an atom or functional group of a molecule is replaced by another atom or functional group.

Down

Formula- A chemical equation that tells us the relative ratios of different atoms in a compound
organic compounds- An organic compound in which there is at least one carbon atom connected by a double bond
reaction- a two-stage reaction process of an addition reaction followed by an elimination reaction.
a molecule that in chemical reaction seeks an atom or molecule containing an electron pair available for bonding.
fission- when a covalent bond is broken, the shared pair of electrons are taken by one of the atoms. In this type of fission, the two bonded electrons are not equally divided.
a substance that takes part in and undergoes change during a reaction.
formula- A chemical formula that shows the number and kinds of atoms in a molecule.
reaction- a reaction in which one molecule combines with another to form a larger molecule with no other products.
an aromatic hydrocarbon in a shape of a hexagon
a molecule or substance that has a tendency to donate electrons or react at electron-poor sites such as protons.

15 Clues: an aromatic hydrocarbon in a shape of a hexagon • a substance that takes part in and undergoes change during a reaction. • formula- A chemical formula that shows the number and kinds of atoms in a molecule. • formula- a formula which shows the arrangement of atoms in the molecule of a compound. • ...

Skibidi chem crossword 2025-03-21

Across

A substance that will dissolve into a liquid. (6)
Two or more atoms stuck together. (8)
The number of chemical bonds an atom can form. (7)
When a liquid turns into a gas. (11)
Emitting energy or particles from an unstable atom. (11)
A substance that speeds up a chemical reaction. (9)
A solution that forms when a solute dissolves in a solvent. (8)
A reaction that releases heat. (11)
How much mass is in a certain amount of space. (7)
The tiniest piece of an element. (4)
When an acid and base react. (13)
A large molecule made of repeating smaller units. (7)
When a liquid turns into a solid. (8)
Atoms of the same element with different numbers of neutrons. (8)
Burning, a chemical reaction with oxygen. (10)
The loss of electrons during a reaction. (9)
A substance that dissolves another substance. (7)

Down

A substance that tells you the pH of an acid or alkaline. (9)
The process that happens when a solid turns straight into a gas. (11)
When a liquid turns into a gas. (11)
A mixture of metals. (5)
A process that can determine the concentration of a solution. (9)
When a gas turns into a liquid. (12)
Gradual destruction of materials by chemical reactions. (9)
A reaction that absorbs heat. (11)
The gain of electrons during a reaction. (9)
A pure substance made of one type of atom. (7)
The amount of solute there is in a specific volume of the solvent. (13)

28 Clues: A mixture of metals. (5) • When an acid and base react. (13) • A reaction that absorbs heat. (11) • A reaction that releases heat. (11) • When a liquid turns into a gas. (11) • When a liquid turns into a gas. (11) • When a gas turns into a liquid. (12) • The tiniest piece of an element. (4) • Two or more atoms stuck together. (8) • When a liquid turns into a solid. (8) • ...

Chemistry Vocabulary Crossword 2024-05-16

Chemistry Vocabulary Crossword crossword puzzle

Across

positively-charged atomic particle
the number of protons in an atom
type of reaction in which one reactant becomes two or more products
the results of a chemical reaction
a homogeneous mixture in which one substance is dissolved
if a reaction absorbs heat, it is ______
type of equation which shows only the ions which participate in the reaction
the affinity of an atom for electrons
the movement of gas particles through a small hole
type of electron in the outermost energy level
the reagent that determines the yield of products
the calculation of quantities in chemical reactions
atom with a positive charge

Down

when the forward and reverse reactions rates are equal
the energy required for a chemical reaction to happen
a mixture with large particles that do not dissolve
a substance that changes color in the presence of an acid or base
type of bond in which electrons are shared
a quantity equal to Avogadro's number
atoms with different numbers of neutrons
a measure of the amount of solute dissolved in a solvent
when a solution contains the maximum amount of solute, it is _____
the type of acid that is a proton donor
a row across the periodic table
substance that speeds up a chemical reaction
the heat flow of a system at constant pressure
the simplest type of any substance
turning a liquid into a gas through evaporation
region of space where an electron is most likely found
element in group 7A on the periodic table

30 Clues: atom with a positive charge • a row across the periodic table • the number of protons in an atom • positively-charged atomic particle • the results of a chemical reaction • the simplest type of any substance • a quantity equal to Avogadro's number • the affinity of an atom for electrons • the type of acid that is a proton donor • if a reaction absorbs heat, it is ______ • ...

Dental 2022-10-06

Across

Preserved or finished by a chemical/physical process
Microscopic space between tooth structure and restoration
Colorless liquid made from clove oil and is very soothing
chemical agent used to prepare a tooth surface.
Internal reaction or resistance to an extremely applied force
Hardened or set by a chemical reaction of two materials
Distortion or change produced as a result of stress
Artistically pleasing & beautiful appearance
To restore or bring back to its natural appearance

Down

Very thin layer of debris on newly prepared dentin
Characterized by the release of heat from a chemical reaction
To remove all moisture from and item, or dry out
Physical property of fluids and the resistance to flow
An electrical current that takes place between two different metals coming together
Causes a physical change through energy & strength
a discoloration
To stick or glue two items together.
To mix using a spatula-type instrument

18 Clues: a discoloration • To stick or glue two items together. • To mix using a spatula-type instrument • Artistically pleasing & beautiful appearance • chemical agent used to prepare a tooth surface. • To remove all moisture from and item, or dry out • Very thin layer of debris on newly prepared dentin • Causes a physical change through energy & strength • ...

Enyzmes, Biochemical Reactions, and ATP Vocab Review 2023-04-28

Enyzmes, Biochemical Reactions, and ATP Vocab Review crossword puzzle

Across

substance that is changed during a chemical reaction
releases energy
when an enzymes active site is deformed and loses its specific shape leading to a loss of biological activity
Energy the amount of energy needed to make a chemical reaction start
proteins that speed up biochemical reactions by lowering the activation energy
substance that is made by a chemical reaction
all of the chemical reactions within each cell
the breakdown of larger molecules into simpler compounds

Down

movement of ions down a concentration gradient
substance that speeds up reactions without being permanently altered
absorbs energy
the building of larger molecules from smaller ones
Reactions the breaking and forming of bonds between different substances during chemical changes
adenosine triphosphate

14 Clues: absorbs energy • releases energy • adenosine triphosphate • substance that is made by a chemical reaction • movement of ions down a concentration gradient • all of the chemical reactions within each cell • the building of larger molecules from smaller ones • substance that is changed during a chemical reaction • the breakdown of larger molecules into simpler compounds • ...

Topic 2.5 Enzymes 2022-02-27

Across

_______________ _____________temperature The temperature at which an enzyme has the maximum activity in an enzyme assay (8, 7)
________________ pH the pH at which an enzyme exhibits maximum activity (7)
Enzyme breaks down lactose into glucose and galactose (also called lactase) (4-13)
The reactant on which an enzyme works (9)
Synthesis of larger molecules from smaller ones - usually by condensation (8)
Reactions in which complex molecules are broken down to simpler ones and energy is released (9)
_________________ model: Enzyme model where the substrate causes the enzyme to alter its shape slightly so it fits better
_____________ limited: The plateau part of a substrate concentration vs. reaction rate curve (6)
The part of an enzyme or antibody where the chemical reaction occurs (6, 4)

Down

A substance produced in a chemical reaction (7)
the maximum rate of reaction determined just after the reaction begins (7, 4)
_____________ energy; The minimum amount of energy required to start a chemical reaction (10)
________________ enzymes Enzyme molecules bound to an inert material, over which the substrate molecules move (11)
_______________ limited: The linear part of a substrate concentration vs. reaction rate curve (9)
___________________ model: The model of the enzyme that shows the substrate fitting perfectly into the active site (4, 3, 3)
A substance that speeds up the rate of a chemical reaction (8)

16 Clues: The reactant on which an enzyme works (9) • A substance produced in a chemical reaction (7) • A substance that speeds up the rate of a chemical reaction (8) • ________________ pH the pH at which an enzyme exhibits maximum activity (7) • The part of an enzyme or antibody where the chemical reaction occurs (6, 4) • ...

Changes in Matter 2025-04-28

Across

Reaction- A process where chemicals interact
the branch of science
change- changes with new product
smallest unit of matter
the measure of matter in an object
a substance that speeds up chem reactions
the association of atoms or ions
what forms during chemical reactions
combination of two or more substances
Takes up space

Down

Stored in chemical bonds
any substance with identical molecules
there at the start of an chemical reaction
energy transfer due to temperature
Made up of two or more atoms
a pure substance that can't be broken down
kinetic energy of all atoms
the amount of space

18 Clues: Takes up space • the amount of space • the branch of science • smallest unit of matter • Stored in chemical bonds • kinetic energy of all atoms • Made up of two or more atoms • change- changes with new product • the association of atoms or ions • energy transfer due to temperature • the measure of matter in an object • what forms during chemical reactions • ...

Use the clues to fill in the words above. Words can go across or down. Letters are shared when the words intersect. 2023-05-27

Across

Prefix meaning "many".
A ______represents the chemical name of a compound.
Chemical substance with the formula "H2O".
A short way of describing a chemical reaction.
Term used to describe the end result of a chemical reaction.
Name given to negatively charged ions.
Term used to describe starting materials in a chemical reaction.
How many atoms of oxygen are present in the formula Pb(NO3)2.

Down

Number placed in front of a formula when balancing equations.
Ions with more than one element combined, e.g. OH-.
Name given to positively charged ion.
Element with the symbol "Mg".
Symbol used to represent sodium.
The plus sign on the right hand side of an equation means __________.
The plus sign on the left hand side of a chemical equation means.

15 Clues: Prefix meaning "many". • Element with the symbol "Mg". • Symbol used to represent sodium. • Name given to positively charged ion. • Name given to negatively charged ions. • Chemical substance with the formula "H2O". • A short way of describing a chemical reaction. • Ions with more than one element combined, e.g. OH-. • A ______represents the chemical name of a compound. • ...

Science Vocabulary 2016-12-07

Across

chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell
having legal force
which a single compound breaks down into two or more elements or new compounds
name given to a horizontal row of the periodic table
The central part of an atom that contains the protons and neutron
results in the formation of new chemical substances
the law that the properties of the elements are periodic functions of their atomic numbers
exothermic reaction in which something reacts with oxygen
a substance made by mixing other substances together.
total number of protons and neutrons
smallest component of an element
lasting attraction between atoms that enables the formation of chemical compounds
a positive charged ion
type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.
substances that are made of only one type of atom or only one type of molecule
stored in the bonds of chemical compounds
not consistent or having a fixed pattern
tryout or experiment to test quality
number or symbol multiplied with a variable or an unknown quantity in an algebraic term
various particles of matter that are smaller than a hydrogen atom
smallest of the particles that make up an atom, and they carry a negative charge
substance that is formed as the result of a chemical reaction
an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals.
which two or more simple substances combine to form a more complex product
electrically charged atom or group of atoms formed by the loss or gain of one or more electrons
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
A mixture which has uniform composition and properties throughout
two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons
Elements that form cations when compounds of it are in solution and oxides of the elements form hydroxides rather than acids in water
characteristic of a substance that is observed during a reaction in which the chemical composition

Down

A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties
a variable (often denoted by x ) whose variation does not depend on that of another.
is a measure of mass per volume
property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places
mass of an isotope of an element measured in units
chemical reaction in the form of symbols and formulae
is a column of elements in the periodic table of the chemical elements
a thing that is composed of two or more separate elements
a substance that takes part in and undergoes change during a reaction.
process describes a process or reaction in which the system absorbs energy from its surroundings
needs to be balanced so that it follows the law of conservation of mass
unchanging standard of comparison in scientific experimentation
chemical element (as boron, carbon, or nitrogen) that lacks the characteristics of a metal and that is able to form anions, acidic oxides, acids, and stable compounds with hydrogen.
the variable being tested in a scientific experiment
chemical reaction that releases energy by light or heat
color, smell, freezing point, boiling point, melting point
is a subatomic particle found in the nucleus of atoms that differs from the other subatomic particles
set of chemical symbols showing the elements present in a compound and their relative proportions
process that involves rearrangement of the molecular
is a charged chemical species (ion) composed of two or more atoms covalently bonded
form when one atom gives up one or more electrons to another atom
changes affecting the form of a chemical substance
explanation made on the basis of limited evidence as a starting point for further investigation.
substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
regions of space around the nucleus of an atom where an electron is likely to be found
negative charged ion
Particle found in a nucleus with a positive charge
substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter
assumed to have a fixed value in a specified mathematical context

61 Clues: having legal force • negative charged ion • a positive charged ion • is a measure of mass per volume • smallest component of an element • total number of protons and neutrons • tryout or experiment to test quality • not consistent or having a fixed pattern • stored in the bonds of chemical compounds • mass of an isotope of an element measured in units • ...

Unit two vocab 2023-01-25

Across

a substance that is present at the end of a chemical reaction
any of the basic units of structure of DNA or RNA that consist of a base joined to a sugar with 5 carbon atoms in a molecule and to a phosphate group
a biological catalyst and is almost always a protein.
the surface on which an organism (eg: plant, fungus, or animal) lives or the substance on which an enzyme can act.
the simples carbohydrates since they cannot by hydrolyzed to smaller carbohydrates
A measure of how acidic or basic a substance or solution is
macromolecules consisting of a long-chain of smaller repeating units and side groups
compounds that are soluble in organic solvents and insoluble in polar solvents such as water
large biomolecules that play essential roles in all cells and viruses
a molecule made up of amino acids

Down

a molecule that can be boned to other identical molecules to form a polymer
sugar molecules
The chemical changes that take place in a cell or an organism.
molecules that combine to form proteins
a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction.
the minimum energy required to cause a process to occur
breaking chemical bonds between reactant molecules and forming new bonds between atoms in product particles
A substances that changes when it is combined with another substance in a chemical reaction

18 Clues: sugar molecules • a molecule made up of amino acids • molecules that combine to form proteins • a biological catalyst and is almost always a protein. • the minimum energy required to cause a process to occur • A measure of how acidic or basic a substance or solution is • a substance that is present at the end of a chemical reaction • ...

Chem Comm Unit 4-2 Chemical Equations 2022-11-29

Chem Comm Unit 4-2 Chemical Equations crossword puzzle

Across

Chemical ________-a group of atomic symbols...
_________ Chemical Equation-shows how many...
a chemical reaction only arranges
Chemical ______-a written chemical reaction...
reactants on the ____ and products on the right
how many there is if there is no # before reactant..

Down

numbers that are written before reactants
Chemical ________-reactants equal to mass of...
captured gases of a combustion reaction...
____ of Conservation of Matter-a scientific...

10 Clues: a chemical reaction only arranges • numbers that are written before reactants • captured gases of a combustion reaction... • _________ Chemical Equation-shows how many... • Chemical ________-a group of atomic symbols... • ____ of Conservation of Matter-a scientific... • Chemical ______-a written chemical reaction... • Chemical ________-reactants equal to mass of... • ...

chem bonus 2023-04-25

Across

subatomic particle with a negative charge
standard unit of temperature
two atoms sharing electrons
right side of a chemical equation
organizes all elements into rows and columns
gas to liqiud
catalyst that speeds up a chemical reactions
mass divided by volume
gas law that relates pressure and volume at constant temperature and amount
solid becoming a liquid
smallest unit of matter
6.022×10^23

Down

anything that has mass and takes up space
compound formed from positive and negative ions
what Mrs. Carley teaches
solid, liquid, gas
numbers that matter
Actual yield divided by theoretical yield times 100
standard unit of energy
A chemical reaction that has a positive change in enthalpy.
ΔH
The relating of one chemical substance to another using a balanced chemical reaction

22 Clues: ΔH • 6.022×10^23 • gas to liqiud • solid, liquid, gas • numbers that matter • mass divided by volume • standard unit of energy • solid becoming a liquid • smallest unit of matter • what Mrs. Carley teaches • two atoms sharing electrons • standard unit of temperature • right side of a chemical equation • anything that has mass and takes up space • subatomic particle with a negative charge • ...

Physical Science Period 7 Chapter 13 Jada Blanchard 2021-11-28

Physical Science Period 7 Chapter 13 Jada Blanchard crossword puzzle

Across

a type of reaction where there s a net absorbtion of energy.
a type of chemical reaction AB+oxygen-> oxides of A and B
2 words: A type of chemical reaction: AB+CD->AD+CB
a type of reaction where there is a net RELEASE of energy

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a type of chemical reaction where there are more + signs on the product side than the reactant. AB->A+B
2 words: a type of chemical reaction: AB+C->AC+B
2 words: also known as bond energy, it is the amount of energy required to pull 2 bonded atoms apart(the same amount of energy relesased when they are brought together)
What the final thing is called (who's going out) Arrow is pointing at this
what was originally there in a chemical reaction (who's going in)
A type of chemical reaction where there are more + signs on the reactant side than product. A+B->AB
Law of ____ conservation: no atoms are gained/lost during any reaction but just change partners to form new materials.

11 Clues: 2 words: a type of chemical reaction: AB+C->AC+B • 2 words: A type of chemical reaction: AB+CD->AD+CB • a type of chemical reaction AB+oxygen-> oxides of A and B • a type of reaction where there is a net RELEASE of energy • a type of reaction where there s a net absorbtion of energy. • what was originally there in a chemical reaction (who's going in) • ...

Chemical equations 2023-04-05

Across

Not created or destroyed in a chemical reaction
A reaction where the products are warmer than the reactants
Two or more of any elements
Substance before a chemical reaction

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A reaction where the products are colder than the reactants
Making and equation have equal atoms in the reactants and products
Signifies the process of a chemical reaction
The thing you change to make a chemical equation follow the law of conservation of mass
Resulting substance in a chemical reaction
Two or more combined different elements

10 Clues: Two or more of any elements • Substance before a chemical reaction • Two or more combined different elements • Resulting substance in a chemical reaction • Signifies the process of a chemical reaction • Not created or destroyed in a chemical reaction • A reaction where the products are colder than the reactants • ...

Macromolecules Vocabulary Quiz 2026-01-29

Macromolecules Vocabulary Quiz crossword puzzle

Across

A substance produced in a chemical reaction
A three dimensional polymer made of monomers of amino acids.
A chemical substance that is present at the start of a chemical reaction
A single sugar molecule such as glucose or fructose, the simplest type of sugar.
A simple sugar that is an important source of energy.
(C) found in all living things and is one of the most important elements to life.
one
A chemical process that splits a molecule by adding water.
Highly flammable, colorless, odorless gas; element number 1
(adenosine triphosphate) main energy source that cells use for most of their work
molecules that contain carbon
the making and breaking of chemical bonds
Water fearing
are 4 types: proteins, carbohydrates, lipids, and nucleic acids.
Acid macromolecule containing hydrogen, oxygen, nitrogen, carbon, and phosphorus. DNA and RNA

Down

water loving
A chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule.
Conversion of light energy from the sun into chemical energy.
macromolecule made mostly from carbon and hydrogen atoms; includes fats, oils, and waxes
a lipid that contains phosphorus and that is a structural component in cell membranes
Building Blocks of Lipids
An organic molecule consisting only of carbon and hydrogen.
the starches and sugars present in foods
large
many
polysaccharide consisting of glucose monomers that reinforces plant-cell walls
large molecules that make up living things. Made of monomers that are linked together.
A type of protein that speeds up a chemical reaction in a living thing
Element number 8 in periodic table, essential for most organismsSulfur Element number 16 on periodic table; macronutrient needed for the function of enzymes
sugar
monomer of nucleic acids
small chemical unit that makes up a polymer
two or more atoms held together by covalent bonds
Acids building blocks of proteins

34 Clues: one • many • large • sugar • water loving • Water fearing • monomer of nucleic acids • Building Blocks of Lipids • molecules that contain carbon • Acids building blocks of proteins • the starches and sugars present in foods • the making and breaking of chemical bonds • A substance produced in a chemical reaction • small chemical unit that makes up a polymer • ...

Science Vocabulary 2016-12-07

Across

explanation made on the basis of limited evidence as a starting point for further investigation.
chemical reaction in the form of symbols and formulae
Elements that form cations when compounds of it are in solution and oxides of the elements form hydroxides rather than acids in water
unchanging standard of comparison in scientific experimentation
also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
not consistent or having a fixed pattern
total number of protons and neutrons
a thing that is composed of two or more separate elements
the variable being tested in a scientific experiment
is a charged chemical species (ion) composed of two or more atoms covalently bonded
number or symbol multiplied with a variable or an unknown quantity in an algebraic term
substance that is formed as the result of a chemical reaction
the law that the properties of the elements are periodic functions of their atomic numbers
Particle found in a nucleus with a positive charge
is a subatomic particle found in the nucleus of atoms that differs from the other subatomic particles
a variable (often denoted by x ) whose variation does not depend on that of another.
a substance made by mixing other substances together.
substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter
type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places
needs to be balanced so that it follows the law of conservation of mass
smallest of the particles that make up an atom, and they carry a negative charge
two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons
which two or more simple substances combine to form a more complex product
substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
smallest component of an element
chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell

Down

The central part of an atom that contains the protons and neutron
is a column of elements in the periodic table of the chemical elements
A mixture which has uniform composition and properties throughout
changes affecting the form of a chemical substance
color, smell, freezing point, boiling point, melting point
name given to a horizontal row of the periodic table
A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties
lasting attraction between atoms that enables the formation of chemical compounds
property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
a positive charged ion
a substance that takes part in and undergoes change during a reaction.
type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.
form when one atom gives up one or more electrons to another atom
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
which a single compound breaks down into two or more elements or new compounds
regions of space around the nucleus of an atom where an electron is likely to be found
chemical reaction that releases energy by light or heat
mass of an isotope of an element measured in units
process that involves rearrangement of the molecular
exothermic reaction in which something reacts with oxygen
stored in the bonds of chemical compounds
process describes a process or reaction in which the system absorbs energy from its surroundings
results in the formation of new chemical substances
assumed to have a fixed value in a specified mathematical context
substances that are made of only one type of atom or only one type of molecule
various particles of matter that are smaller than a hydrogen atom
an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals.
chemical element (as boron, carbon, or nitrogen) that lacks the characteristics of a metal and that is able to form anions, acidic oxides, acids, and stable compounds with hydrogen.
negative charged ion
set of chemical symbols showing the elements present in a compound and their relative proportions
having legal force
is a measure of mass per volume
electrically charged atom or group of atoms formed by the loss or gain of one or more electrons
characteristic of a substance that is observed during a reaction in which the chemical composition
tryout or experiment to test quality

61 Clues: having legal force • negative charged ion • a positive charged ion • is a measure of mass per volume • smallest component of an element • total number of protons and neutrons • tryout or experiment to test quality • not consistent or having a fixed pattern • stored in the bonds of chemical compounds • changes affecting the form of a chemical substance • ...

Caroline Davis Chapter 13 2020-10-20

Caroline Davis Chapter 13 crossword puzzle

Across

A chemical that accepts a hydrogen ion
is a substance that lowers the
the minimum energy required to overcome the initial breaking of bonds in reactants.
when reaction and it’s reverse act at the same rate.
When there is a net release of energy during a chemical reaction
The amount of energy needed to pull two bonded atoms apart.
for the reaction to proceed at a faster rate

Down

When there is a net absorption of energy during a chemical reaction
how quickly the concentration of reactants decreases and how quickly the concentration of products increases.
if changed, the equilibrium shifts to oppose change, until new equilibrium is reached.
A chemical that donates a hydrogen ion
energy of a chemical reaction, which

12 Clues: is a substance that lowers the • energy of a chemical reaction, which • A chemical that accepts a hydrogen ion • A chemical that donates a hydrogen ion • for the reaction to proceed at a faster rate • when reaction and it’s reverse act at the same rate. • The amount of energy needed to pull two bonded atoms apart. • ...

Enzymes 2026-03-03

Across

Reaction that has a net release of free energy.
Process of breaking down large molecules into smaller ones.
sum of all the chemical reaction occurring in the cell.
Reaction that absorbs free energy from the surroundings.
Other molecules that reduce or stop the enzyme from functioning and reduces the reaction rate.
Substrate molecules fit perfectly into the active site while active site having a set shape.
New substances formed at the end of the chemical reaction.

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Non-protein molecule that binds with enzyme to enable its catalytic activity.
Energy required to start any reaction.
Flexible active site that changes shape or conforms the substrate as they bond together.
process of making large molecules from smaller ones.
Starting substances in a chemical reaction that undergoes chemical change to form new substances.

12 Clues: Energy required to start any reaction. • Reaction that has a net release of free energy. • process of making large molecules from smaller ones. • sum of all the chemical reaction occurring in the cell. • Reaction that absorbs free energy from the surroundings. • New substances formed at the end of the chemical reaction. • ...

Lesson 4: Compound Chemistry 2023-01-25

Lesson 4: Compound Chemistry crossword puzzle

Across

substances that you start with in a chemical reaction
substances that are left after a chemical reaction
tastes sour, conducts electricity, ruins metal, and donates hydrogen ions
stands for potential of hydrogen
valuable crystals
type of reaction when two or more substances interact and change into different substances

Down

type of reaction that releases energy
a base that works against an acid
type of reaction that absorbs energy
solid that has regular, repeating arrangement of atoms and form geometric shapes
type of reaction that involves changing states of matter
molecules arranged in long chains of repeating small molecules
tastes chalky or bitter, breaks down fats, receives hydrogen ions

13 Clues: valuable crystals • stands for potential of hydrogen • a base that works against an acid • type of reaction that absorbs energy • type of reaction that releases energy • substances that are left after a chemical reaction • substances that you start with in a chemical reaction • type of reaction that involves changing states of matter • ...

Science Vocabulary 2016-12-07

Across

The central part of an atom that contains the protons and neutron
is a column of elements in the periodic table of the chemical elements
electrically charged atom or group of atoms formed by the loss or gain of one or more electrons
also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
color, smell, freezing point, boiling point, melting point
set of chemical symbols showing the elements present in a compound and their relative proportions
a substance made by mixing other substances together.
stored in the bonds of chemical compounds
is a charged chemical species (ion) composed of two or more atoms covalently bonded
is a subatomic particle found in the nucleus of atoms that differs from the other subatomic particles
a positive charged ion
property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
various particles of matter that are smaller than a hydrogen atom
substance that is formed as the result of a chemical reaction
type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.
needs to be balanced so that it follows the law of conservation of mass
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
changes affecting the form of a chemical substance
the law that the properties of the elements are periodic functions of their atomic numbers
Particle found in a nucleus with a positive charge
negative charged ion
Elements that form cations when compounds of it are in solution and oxides of the elements form hydroxides rather than acids in water
substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter
chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell
name given to a horizontal row of the periodic table
a variable (often denoted by x ) whose variation does not depend on that of another.
assumed to have a fixed value in a specified mathematical context
substances that are made of only one type of atom or only one type of molecule
process describes a process or reaction in which the system absorbs energy from its surroundings
A mixture which has uniform composition and properties throughout
a substance that takes part in and undergoes change during a reaction.
mass of an isotope of an element measured in units
a thing that is composed of two or more separate elements

Down

total number of protons and neutrons
not consistent or having a fixed pattern
two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons
tryout or experiment to test quality
explanation made on the basis of limited evidence as a starting point for further investigation.
is a measure of mass per volume
which a single compound breaks down into two or more elements or new compounds
results in the formation of new chemical substances
form when one atom gives up one or more electrons to another atom
chemical reaction in the form of symbols and formulae
regions of space around the nucleus of an atom where an electron is likely to be found
process that involves rearrangement of the molecular
type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places
the variable being tested in a scientific experiment
characteristic of a substance that is observed during a reaction in which the chemical composition
which two or more simple substances combine to form a more complex product
substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
lasting attraction between atoms that enables the formation of chemical compounds
chemical reaction that releases energy by light or heat
exothermic reaction in which something reacts with oxygen
smallest of the particles that make up an atom, and they carry a negative charge
A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties
number or symbol multiplied with a variable or an unknown quantity in an algebraic term
smallest component of an element
an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals.
chemical element (as boron, carbon, or nitrogen) that lacks the characteristics of a metal and that is able to form anions, acidic oxides, acids, and stable compounds with hydrogen.
unchanging standard of comparison in scientific experimentation
having legal force

61 Clues: having legal force • negative charged ion • a positive charged ion • is a measure of mass per volume • smallest component of an element • total number of protons and neutrons • tryout or experiment to test quality • not consistent or having a fixed pattern • stored in the bonds of chemical compounds • changes affecting the form of a chemical substance • ...

Unit 5 Vocabulary 2022-11-21

Across

An atom or molecule that has a positive or negative net charge from losing or gaining electrons.
The substances that go into and are changed during a chemical reaction.
Chemical bond in which electrons are shared between atoms to form electron pairs.
Chemical reaction in which two or more simple substances react, forming a complex product (A + B -> AB).
A substance made from two or more chemically joined elements.
Compounds in which oppositely charged ions attract each other.
Chemical reaction in which a reactant breaks down into two or more products (AB -> A + B).
Chemical reaction in which two reacting ionic compounds switch places, forming two new products (AB + CD -> AD + CB).

Down

Chemical reaction in which one element is replaced by another element in a compound (A + BC -> AC + B).
Number placed in front of a chemical formula, representing how many molecules there are of that formula.
An element that is never found by itself and is always bonded to another atom (remember: have no fear of ice cold bears).
Number that comes after and below a symbol, representing how many atoms there are of that element.
Oxygen combines with an element or a compound, forming an oxide. It releases energy as heat and light.
The substances formed from chemical reactions.

14 Clues: The substances formed from chemical reactions. • A substance made from two or more chemically joined elements. • Compounds in which oppositely charged ions attract each other. • The substances that go into and are changed during a chemical reaction. • Chemical bond in which electrons are shared between atoms to form electron pairs. • ...

Chemistry Crossword 2016-07-26

Across

A substance made of one type of atom only
A mixture of sugar and water is called a s......n
The raw materials in a chemical reaction
In a mixture of sugar and water, sugar is the s....e
In a chemical r......n chemical bonds are broken or made, and new substances are formed

Down

A chemical expression that shows the reactants and products in a chemical reaction
The end results of a chemical reaction
Compounds are held together by chemical b...s
The study of matter and how it changes
Something that dissolves other substances, eg. water
The chemical formula for c...k is CaCO3

11 Clues: The end results of a chemical reaction • The study of matter and how it changes • The chemical formula for c...k is CaCO3 • The raw materials in a chemical reaction • A substance made of one type of atom only • Compounds are held together by chemical b...s • A mixture of sugar and water is called a s......n • Something that dissolves other substances, eg. water • ...

Chemistry 2016-12-19

Across

A nuclear reaction when a large nucleus splits into two smaller nuclei.
A type of reaction that can convert an atom into an atom of another element.
A word used to describe when a substance is able to be stretched into wires.
A special type of reaction when a substance reacts with oxygen gas.
A base that will dissolve in water.
A type of reaction that releases heat.
A substance that turns litmus paper blue.
The name given to the reaction used by plants to produce sugar.
A word used to describe when a substance is able to be hammered into new shapes.
Subatomic particle with a negative charge.
The name given the substances you are left with after a chemical reaction.
The chemical symbol NA is for which atom?

Down

The name given to the cluster of protons and neutrons at the centre of an atom.
The name given to a cluster of atoms.
A type of reaction that absorbs heat from the surroundings.
A mixture of a base metal and small amounts of other elements.
An atom that becomes electrically charged from losing or gaining electrons.
There are 118 known types of atoms, and only 98 are found ________ on Earth.
A substance that turns litmus paper red.
The name given to substances you start with in a chemical reaction.
A substance that is made up of different types of atoms.
A chemical that changes colour to show if a substance is acidic, neutral, or basic.
The name given to an atom that has the same number of protons but a different number of neutrons.
A substance that is made up of one type of atom.
Subatomic particle that is found in the cloud that surrounds the nucleus.
the product formed when iron reacts with water.
Subatomic particle with a positive charge.

27 Clues: A base that will dissolve in water. • The name given to a cluster of atoms. • A type of reaction that releases heat. • A substance that turns litmus paper red. • A substance that turns litmus paper blue. • The chemical symbol NA is for which atom? • Subatomic particle with a negative charge. • Subatomic particle with a positive charge. • ...

C1.1 Enzymes and Metabolism 2026-03-18

C1.1 Enzymes and Metabolism crossword puzzle

Across

inhibition A form of enzyme inhibition where a molecule binds to an allosteric site, causing a change in the active site that prevents catalysis
the substance on which an enzyme acts
A chemical reaction where macromolecules are broken down into monomers by the addition of water
minimum amount of energy required to initiate a chemical reaction
A specific region on an enzyme, separate from the active site, where an inhibitor can bind to regulate enzyme activity
____ reduce cholesterol levels and heart disease risk
____ inhibit transpeptidase needed for bacteria to build cell walls
a specific three-dimensional region on an enzyme where substrate molecules bind and undergo a chemical reaction
satins block the enzyme ____ to stop any further steps in the pathway
A regulatory mechanism where the end product of a metabolic pathway inhibits an earlier enzyme in the pathway to stop further production

Down

theory that states for a reaction to occur reactant particles must collide with sufficient activation energy and in correct orientation
where proteins lose their native three-dimensional structure and becomes non-fucntional
biological catalysts made by cells to speed up reactions
An intracellular metabolic pathway that breaks down glucose, forming part of cellular respiration
substance that increases rate of chemical reaction without undergoing any permanent chemical change itself
A form of enzyme inhibition where a molecule binds reversibly to the active site, competing with the substrate
all chemical processes in an organism

17 Clues: the substance on which an enzyme acts • all chemical processes in an organism • ____ reduce cholesterol levels and heart disease risk • biological catalysts made by cells to speed up reactions • minimum amount of energy required to initiate a chemical reaction • ____ inhibit transpeptidase needed for bacteria to build cell walls • ...

Vocabulary Up to Now 2022-01-31

Across

bacteria, fungi, living
smallest particle of an element
air, mineral, light not living
of all kinetic energy heat is present
by natural means in a short period
sum of all living matter on earth
that takes changes in chemicalreaction
reaction during which heat releases
simplest unit of a chemical compound
living thing
produced during a chemical reaction

Down

replaceable by natural means
that is stored in a system/object
of gas surrounding a planet
source or supply that benefits organisms
of motion
reaction requiring the absorption of heat

17 Clues: of motion • living thing • bacteria, fungi, living • of gas surrounding a planet • replaceable by natural means • air, mineral, light not living • smallest particle of an element • that is stored in a system/object • sum of all living matter on earth • by natural means in a short period • reaction during which heat releases • produced during a chemical reaction • ...

Science Vocabulary 2016-12-07

Across

explanation made on the basis of limited evidence as a starting point for further investigation.
chemical reaction in the form of symbols and formulae
Elements that form cations when compounds of it are in solution and oxides of the elements form hydroxides rather than acids in water
unchanging standard of comparison in scientific experimentation
also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.
not consistent or having a fixed pattern
total number of protons and neutrons
a thing that is composed of two or more separate elements
the variable being tested in a scientific experiment
is a charged chemical species (ion) composed of two or more atoms covalently bonded
number or symbol multiplied with a variable or an unknown quantity in an algebraic term
substance that is formed as the result of a chemical reaction
the law that the properties of the elements are periodic functions of their atomic numbers
Particle found in a nucleus with a positive charge
is a subatomic particle found in the nucleus of atoms that differs from the other subatomic particles
a variable (often denoted by x ) whose variation does not depend on that of another.
a substance made by mixing other substances together.
substances that cannot be chemically interconverted or broken down into simpler substances and are primary constituents of matter
type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places
needs to be balanced so that it follows the law of conservation of mass
smallest of the particles that make up an atom, and they carry a negative charge
two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons
which two or more simple substances combine to form a more complex product
substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
smallest component of an element
chemical rule of thumb that reflects observation that atoms of main-group elements tend to combine in such a way that each atom has eight electrons in its valence shell

Down

The central part of an atom that contains the protons and neutron
is a column of elements in the periodic table of the chemical elements
A mixture which has uniform composition and properties throughout
changes affecting the form of a chemical substance
color, smell, freezing point, boiling point, melting point
name given to a horizontal row of the periodic table
A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties
lasting attraction between atoms that enables the formation of chemical compounds
property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
a positive charged ion
a substance that takes part in and undergoes change during a reaction.
type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound.
form when one atom gives up one or more electrons to another atom
the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
which a single compound breaks down into two or more elements or new compounds
regions of space around the nucleus of an atom where an electron is likely to be found
chemical reaction that releases energy by light or heat
mass of an isotope of an element measured in units
process that involves rearrangement of the molecular
exothermic reaction in which something reacts with oxygen
stored in the bonds of chemical compounds
process describes a process or reaction in which the system absorbs energy from its surroundings
results in the formation of new chemical substances
assumed to have a fixed value in a specified mathematical context
substances that are made of only one type of atom or only one type of molecule
various particles of matter that are smaller than a hydrogen atom
an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals.
chemical element (as boron, carbon, or nitrogen) that lacks the characteristics of a metal and that is able to form anions, acidic oxides, acids, and stable compounds with hydrogen.
negative charged ion
set of chemical symbols showing the elements present in a compound and their relative proportions
having legal force
is a measure of mass per volume
electrically charged atom or group of atoms formed by the loss or gain of one or more electrons
characteristic of a substance that is observed during a reaction in which the chemical composition
tryout or experiment to test quality

61 Clues: having legal force • negative charged ion • a positive charged ion • is a measure of mass per volume • smallest component of an element • total number of protons and neutrons • tryout or experiment to test quality • not consistent or having a fixed pattern • stored in the bonds of chemical compounds • changes affecting the form of a chemical substance • ...

Physical and Chemical Changes Vocabulary 2023-03-22

Physical and Chemical Changes Vocabulary crossword puzzle

Across

change occurs when atoms link together in new ways to create
of Conservation of Mass states that the mass of an object, or
examples: decaying, and burning
change a change that alters the form of an object without
the deterioration of a material or metal, as it reacts with its
different from the original substances. (also known as a chemical
point the temperature at which a substance goes from a liquid to a gas
how easily a substance is able to catch fire

Down

what type of matter it is. Examples: molding clay, sharpening a pencil
of objects never changes, no matter how the parts are rearranged.
an original substance at the beginning of a chemical reaction (usually
a substance at the end of a chemical reaction
100°C)
a solid substance that forms and separates from a solution and
evidence of a chemical change
a thin layer of corrosion that forms over copper, brass, and silver.
point the temperature at which a substance becomes solid (32 °F;
property the way a substance reacts with other substances
on the left side of a chemical equation)

19 Clues: 100°C) • evidence of a chemical change • examples: decaying, and burning • on the left side of a chemical equation) • how easily a substance is able to catch fire • a substance at the end of a chemical reaction • change a change that alters the form of an object without • property the way a substance reacts with other substances • ...

Stoichiometry Crossword Puzzle 2025-02-05

Stoichiometry Crossword Puzzle crossword puzzle

Across

A way of counting similar to a gross
mass in grams of one mole of a substance
The amount of a substance you should be able get out of a chemical reaction
The Abbreviation of "standard temperature and pressure"
A reactant that is fully used up in a chemical reaction
A way of converting units of measurement
The efficiancy of a chemical reaction, or what percent of a substance you got versus what you were supposed to get

Down

A reactant that is not fully used in a chemical reaction
The ratio of the amount of moles of a substance put into a reaction versus the amount of moles that come out of the reaction
The amount of particles in one mole of anything
Taking the relationships between reactants and products to find the desired data of a problem
The amount of a substance that you actually get out of a chemical reaction
A unit of concentration for solutions that is frequently used in chemistry, and is defined as the number of moles in a solute divided by the volume(in Liters)

13 Clues: A way of counting similar to a gross • mass in grams of one mole of a substance • A way of converting units of measurement • The amount of particles in one mole of anything • The Abbreviation of "standard temperature and pressure" • A reactant that is fully used up in a chemical reaction • A reactant that is not fully used in a chemical reaction • ...

Science Vocabulary 2013-12-12

Across

a process that leads to the transformation of one set of chemical substances to another
releases heat energy
occurs when a substance combines with another to create a new substance
result of chemical equation
substances that mix in a chemical reaction
Slows down a chemical reaction

Down

a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
mass cannot be created nor destroyed
2Ag+2HCl=2AgCl+H2
absorbed heat energy
Speed up a chemical reaction

11 Clues: 2Ag+2HCl=2AgCl+H2 • releases heat energy • absorbed heat energy • result of chemical equation • Speed up a chemical reaction • Slows down a chemical reaction • mass cannot be created nor destroyed • substances that mix in a chemical reaction • occurs when a substance combines with another to create a new substance • ...

Chemical Reactions 2016-10-23

Across

Highly Combustible chemicals; petrol is a mix of me
A chemical reaction that releases energy
Combustion that occurs when there is plenty of oxygen. It produces carbon dioxide and water vapour
A way of protecting aluminium from corrosion, by deliberately creating a layer of aluminium oxide over it
The term commonly used for sodium chloride, but covers any compound formed by a metal taking place of the hydrogen atom in acid

Down

A green coating of copper hydroxide that is produced when copper reacts with moisture, carbon dioxide and oxygen in the atmosphere; chemical formula Cu(OH)
Endothermic reaction that takes place in green plants. Uses energy from sunlight to combine water and carbon dioxide and produce glucose and oxygen gas
The breakdown of metals due to their reaction with other chemicals
Hydrated iron oxide, Fe2O3.H2O
A tern used ti describe materials that store carbon in their structures. Plants and animals can be thought of as carbon sinks
Rain that has acids such as nitric acid and sulfuric acid dissolved into it
Chemicals produced in a chemical reaction. They are written on the right hand side of the arrow
Chemicals that take part in a chemical reaction. They are written of the left hand side of the arrow
A rapid reaction with oxygen that releases energy in the for of heat and/or light
A chemical reaction that absorbs energy

15 Clues: Hydrated iron oxide, Fe2O3.H2O • A chemical reaction that absorbs energy • A chemical reaction that releases energy • Highly Combustible chemicals; petrol is a mix of me • The breakdown of metals due to their reaction with other chemicals • Rain that has acids such as nitric acid and sulfuric acid dissolved into it • ...

Chemistry 2024-06-13

Across

The insoluble substance formed during a chemical reaction
change in which new substance and new properties are formed
Reaction in which a more reactive metal displaces a less reactive metal
Substances that are formed as a result of a chemical reaction
Reaction in which a single compound breaks into two or more elements or compounds

Down

Reaction in which heat is released
A shorter way to show chemical reactions using symbols instead of words
A process that occurs when atoms or groups of atoms lose electrons.
substance that take place in reaction
Spoilage of food
reaction in which oxidation and reduction both takes places simultaneously

11 Clues: Spoilage of food • Reaction in which heat is released • substance that take place in reaction • The insoluble substance formed during a chemical reaction • change in which new substance and new properties are formed • Substances that are formed as a result of a chemical reaction • A process that occurs when atoms or groups of atoms lose electrons. • ...

Leslie Munoz Crossword 2017-02-27

Across

the quantity of product formed by the interaction of two or more substances, generally expressed as a percentage of the quantity obtained to that theoretically obtainable
a number or symbol multiplied with a variable or an unknown quantity
ion- a charged particle which has two or more atoms held together by covalent bonds
rapid oxidation accompanied by heat and usually light
the passage of an electric current through an electrolyte with subsequent migration of positively and negatively charged ions to the negative and positive electrodes
containing water
the process or result of reducing
compound-a chemical compound that contains exactly two different elements
a substance that causes or accelerates a chemical reaction without itself being affected

Down

replacement- a type of chemical where two compounds react and the positive ions and the negative ions of the two reactants switch places forming two new compounds or products
the forming or building of a more complex substance or compound from elements or simpler compounds
the process or result of oxidizing
to separate a substance in solid from a solution as by means of e reagent
the act or process of decomposing
equation- a symbolic representation showing the kind and amount of the starting materials and products of a reaction
any substance that undergoes a chemical change in a given reaction
consisting of two atoms
a substance obtained from another substance through chemical change
replacement- a type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound

19 Clues: containing water • consisting of two atoms • the act or process of decomposing • the process or result of reducing • the process or result of oxidizing • rapid oxidation accompanied by heat and usually light • any substance that undergoes a chemical change in a given reaction • a substance obtained from another substance through chemical change • ...

Chemistry Crossword 2019-08-21

Across

These reactions release energy.
This is present in any combustion reaction.
A type of energy source.
These reactions absorb energy.
Substances that are produced in a reaction.

Down

Chemical element 'C'.
This gets released in a combustion reaction.
Chemical compound written as 'H2O'.
A type of energy product in a combustion reaction.
A substance that undergoes change during a chemical reaction.
The process of burning.

11 Clues: Chemical element 'C'. • The process of burning. • A type of energy source. • These reactions absorb energy. • These reactions release energy. • Chemical compound written as 'H2O'. • This is present in any combustion reaction. • Substances that are produced in a reaction. • This gets released in a combustion reaction. • A type of energy product in a combustion reaction. • ...

Chemical Reactions 2016-10-23

Across

a rapid reaction with oxygen that releases energy in the form of heat and/or light.
the breakdown of metals due to their reaction with other chemicals.
a green coating of copper hydroxide that is produced when copper reacts with moisture, carbon dioxide and oxygen in the atmosphere; chemical formula Cu(OH)2
a chemical reaction that obsorbs energy.
endothermic reaction that takes place in green plants. uses energy from sunlight to combine water and carbon dioxide and produce glucose and oxygen.
a way of protecting aluminium from corrosion, by deliberately creating a layer of aluminium oxide over it.
chemicals that take part in chemical reaction. they are written on the left hand side of the arrow.

Down

chemicals produced in a chemical reaction. they are written on the right hand side of the arrow.
a chemical reaction that releases energy.
hydrated iron (III) oxide, Fe2O3.H2O
combustion that occurs when there is plenty of oxygen. it produces carbon dioxide and water vapour.
a term used to describe materials that store carbon in their structures. plants and animals can be thought of as carbon sinks.
the term commonly used for sodium chloride, but covers any compound formed by a metal taking the place of the hydrogen atom in an acid.
highly combustible chemicals; petrol is a mixture of me.
rain that has acids such as nitric acid and sulfuric acid dissolved in it.

15 Clues: hydrated iron (III) oxide, Fe2O3.H2O • a chemical reaction that obsorbs energy. • a chemical reaction that releases energy. • highly combustible chemicals; petrol is a mixture of me. • the breakdown of metals due to their reaction with other chemicals. • rain that has acids such as nitric acid and sulfuric acid dissolved in it. • ...

Chemical Reactions 2016-10-23

Across

A chemical reaction that absorbs energy
Combustion that occurs when there is plenty of oxygen. It produces carbon dioxide and water vapour
A way of protecting aluminium from corrosion, by deliberately creating a layer of aluminium oxide over it
Rain that has acids such as nitric acid and sulfuric acid dissolved into it
A green coating of copper hydroxide that is produced when copper reacts with moisture, carbon dioxide and oxygen in the atmosphere; chemical formula Cu(OH)
A rapid reaction with oxygen that releases energy in the for of heat and/or light
The term commonly used for sodium chloride, but covers any compound formed by a metal taking place of the hydrogen atom in acid

Down

The breakdown of metals due to their reaction with other chemicals
Chemicals produced in a chemical reaction. They are written on the right hand side of the arrow
Endothermic reaction that takes place in green plants. Uses energy from sunlight to combine water and carbon dioxide and produce glucose and oxygen gas
Highly Combustible chemicals; petrol is a mix of me
A tern used ti describe materials that store carbon in their structures. Plants and animals can be thought of as carbon sinks
A chemical reaction that releases energy
Hydrated iron oxide, Fe2O3.H2O
Chemicals that take part in a chemical reaction. They are written of the left hand side of the arrow

Neutralization 2013-03-03

Across

defined as the amount of a constituent divided by the volume of the mixture.
a substance that can accept hydrogen cations (protons) or more generally, donate a pair of valence electrons.
abundance of a constituent divided by the total volume of a mixture.
describes a process or reaction that releases energy from the system.
a subatomic particle with a negative electric charge.
chemical reaction where base and acid form salt.

Down

a chemical compound with the chemical formula H2O.
describes a process or reaction in which the system absorbs energy.
an ion with more electrons than protons.
an acid–base reaction theory, proposed independently by Johannes Nicolaus Brønsted and Thomas Martin Lowry in 1923.
ionic compounds that result from the neutralization reaction of an acid and a base.
a unit of measurement used in chemistry to express amounts of a chemical substance.
a substance which reacts with a base.
a subatomic particle with a positive electric charge.
an ion with fewer electrons than protons.

15 Clues: a substance which reacts with a base. • an ion with more electrons than protons. • an ion with fewer electrons than protons. • chemical reaction where base and acid form salt. • a chemical compound with the chemical formula H2O. • a subatomic particle with a negative electric charge. • a subatomic particle with a positive electric charge. • ...

Chapter 3 Review BIOL2401 2020-09-08

Chapter 3 Review BIOL2401 crossword puzzle

Across

This stage of cellular respiration has a product of two acetyl-CoA's and NADH.
This type of reaction is when there is a net loss of reactants and gain of products over time.
This is the only step of cellular respiration that can carry out with or without the presence of oxygen.
A reaction in which larger molecules are broken down into smaller ones.
A reaction mechanism in which the outcome is a decrease in function in response to a stimulus.
This site is where a noncompetitive inhibitor would bind.
The sum of all chemical reactions within the body.
Stored energy.
This step of cellular respiration is where the bulk of ATP is provided.
This type of reaction is when there is no change in concentration of reactants and products.
This site is where the substrate binds on an enzyme.
Reaction in which energy is released with net decrease in potential energy.
The measure of how quickly a chemical reaction takes place.
When a protein changes shape, it is called...

Down

Energy required to break existing chemical bonds.
The addition of a phosphate group by protein kinases.
Proteins that act as catalysts to speed of reactions.
Protein loses it's shape or unfolds due to external stress.
A reaction in which two or more structures are combined to form a larger one.
The energy of motion.
A set of metabolic reactions that convert biochemical nutrients into ATP.
This type of reaction requires the input of energy from new bonds to increase potential energy.
This type of reaction uses water to break down compounds.

23 Clues: Stored energy. • The energy of motion. • When a protein changes shape, it is called... • Energy required to break existing chemical bonds. • The sum of all chemical reactions within the body. • This site is where the substrate binds on an enzyme. • The addition of a phosphate group by protein kinases. • Proteins that act as catalysts to speed of reactions. • ...

Chemistry Crossword 2017-11-28

Across

- anything that has mass and occupies space
metals - group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
of matter - refers to the three common states in which matter can exist
mass - mass of one atom of an element calculated from the total number of protons, neutrons, and electrons of that atom; measured in amu
property - description of how a substance interacts with other substances, such as acids; chemical properties are observable only when a chemical change occurs
- group 17 elements in the periodic table, the most reactive non-metals
- pure substance that cannot be broken down into other substances; substances made up of only one type of atom
- positively charged particle in the nucleus of an atom
table - a table in which are organized by their physical and chemical properties
un it - measure of atomic mass; 1 amu equals to 1 twelfth the mass of a carbon 12 atom
- horizontal row of elements in the periodic table
- ability of a substance to conduct electricity or heat
- positively charged centre of an atom; contains protons and neutrons

Down

- shiny, malleable, ductile element that conducts electricity
- change of state from solid to liquid
- neutral particle in the nucleus of an atom
- substance that reacts with another substance or substances in a chemical reaction to create new substances with different properties
- vertical column of elements of elements in the periodic table
property - property that describes the physical appearance and composition of a substance
metals - group 2 elements in the periodic table their reactivity is not as strong as alkali metals
reaction - chemical reaction that releases energy
reaction - chemical reaction that absorbs energy
shell - orbits of electrons around the nucleus of an atom
solution - a solution in which water is the solvent
number - the sum of a number of protons and neutrons in an atom
- chemical combination of two or more elements in a specific ratio
gases - group 18 elements in the period table; the most stable and most unreactive elements

27 Clues: - change of state from solid to liquid • - anything that has mass and occupies space • - neutral particle in the nucleus of an atom • reaction - chemical reaction that absorbs energy • reaction - chemical reaction that releases energy • - horizontal row of elements in the periodic table • solution - a solution in which water is the solvent • ...

8.P.1.4 Vocabulary 2023-05-17

Across

The mathematical representation of a chemical reaction.
What begins a chemical reaction.
It is the arrow in a chemical equation. It always points towards the products.
Matter can neither be created nor destroyed in ordinary chemical reactions.
During a reaction it is an area where there is an exchange of energy but not the exchange of matter, to the surroundings.
What you get after a chemical reaction occurs.

Down

Represents the total number of molecules of a chemical in the reaction.
A word that is synonymous with molecule and compound.
The symbol from the periodic table that is used to represent an element.
During a reaction it is the area where there is an exchange of energy and matter, to the surroundings.
The tiny numbers next to chemical symbols. They represent how many atoms there are of that molecule.

11 Clues: What begins a chemical reaction. • What you get after a chemical reaction occurs. • A word that is synonymous with molecule and compound. • The mathematical representation of a chemical reaction. • Represents the total number of molecules of a chemical in the reaction. • The symbol from the periodic table that is used to represent an element. • ...

#41 Redox-Equilibrium Review 2022-04-20

#41 Redox-Equilibrium Review crossword puzzle

Across

if this is applied to a system at equilibrium, the system will change in order to relieve it
an electric cell in which the electrolyte is absorbed in a solid to form a paste, preventing spillage
increasing leads to a shift in the direction that absorbs heat
the process or result of oxidizing or being oxidized
a substance that is reduced
only effects gases in chemical equations at equilibrium
an electrochemical cell that uses a chemical reaction to produce chemical energy.

Down

the minimum quantity of energy which the reactants must possess in order to undergo a specified reaction.
moles/liter
a device that converts chemical energy contained within its active materials directly into electric energy by means of an electrochemical oxidation-reduction (redox) reaction.
Loss of Electrons is Oxidation, Gain of Electrons is Reduction
a substance that is oxidized
measurement (unit)/time
Rate of products into reactants = rate of reactants into products
a reaction that expels heat endothermic a reaction that absorbs heat
Equilibrium Constant
a natural process that converts a refined metal into a more chemically stable form

17 Clues: moles/liter • Equilibrium Constant • measurement (unit)/time • a substance that is reduced • a substance that is oxidized • the process or result of oxidizing or being oxidized • only effects gases in chemical equations at equilibrium • Loss of Electrons is Oxidation, Gain of Electrons is Reduction • increasing leads to a shift in the direction that absorbs heat • ...

Arson and Explosives Crossword 2021-04-12

Arson and Explosives Crossword crossword puzzle

Across

a sudden outburst
an exertion of force
What most arsons are started with
the minimum temperature at which a fuel spontaneouly ignites
substance reacts with oxygen to give heat and light
transformation of a substance produced by the action of heat
the type of chemical reaction fire is
a high explosive that is easily detonated by heat, shock, or friction
a chemical reaction accompanied by the evolution of heat
any material used to start or sustain a fire

Down

Examples of this explosive type are :Dynamite, TNT, PETN and RDX
bombing incidents that confront police agencies today involve
a mechanical device you can carry in your hand that will pick up compounds
a high explosive that normally has to be detonated by a primary explosive.
a very rapid oxidation reaction accompanied by the generation of a low-intensity pressure wave that can disrupt the surroundings
the lowest temperature at which the vapor of a combustible liquid can be ignited in air
a chemical reaction accompanied by the absorption of heat
the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit
fuse consisting of a tube or cord filled or saturated with combustible matter
a violent release of energy caused by a chemical or nuclear reaction
The loss of electrons from a substance involved in a redox reaction.

21 Clues: a sudden outburst • an exertion of force • What most arsons are started with • the type of chemical reaction fire is • any material used to start or sustain a fire • substance reacts with oxygen to give heat and light • a chemical reaction accompanied by the evolution of heat • a chemical reaction accompanied by the absorption of heat • ...

Chemistry crossword 2024-05-10

Across

used to measure pressure
volume is proportional to temperature
group of atoms joined together
an atoms attraction to a shared electron
charged atom
a substance that can't be broken down any further

Down

number of protons in an atom
donates a proton
energy that is needed to start a chemical reaction
chemical reaction caused by heat
recieves a proton
a substance that speeds up a chemical reaction
volume is inversely proportional to pressure
a substance made by two different elements

14 Clues: charged atom • donates a proton • recieves a proton • used to measure pressure • number of protons in an atom • group of atoms joined together • chemical reaction caused by heat • volume is proportional to temperature • an atoms attraction to a shared electron • a substance made by two different elements • volume is inversely proportional to pressure • ...

Chemistry crossword 2014-11-07

Across

ability of a substance to conduct electricity or heat
mass of 1 atom of an element calculated from the total number of protons, neutrons, and electrons of that atom
pure substance formed when at least one metal and non- metal combine
change that results when two or more substances react to create a different substance or substances
chemical reaction that occurs when oxygen reacts with a substance to form a new substance and give off energy
new substance produced in a chemical reaction between reactants
element that has both metallic and non metallic properties
pure substance that can not be broken down into other substances
number of protons in the nucleus of one atom of an element
description of a substance that can be pounded or rolled into sheets
vertical column of elements in the periodic table

Down

substance that helps a chemical reaction proceed more quickly
change in the appearance or state of a substance that does not change the composition
an experiment in which all reactants and all product of a chemical reaction are accounted for
group 17 elements in the periodic table; the most reactive non-metals
vertical column of elements in the periodic table
description of a solid that can be stretched into long wire
slow chemical change that occurs when oxygen in the air reacts with a metal
pure substance formed when at least one metal and one non metal combine
chemical combination of two or more elements i a specific ratio
neutral particle in the nucleus of an atom
group 1 elements in the periodic table, not including hydrogen; the most reactive of the metals
catalyst involved in chemical reactions in living things
shiny,malleable,ductile, element that conducts electricity
invisible negatively charged particle that orbits the nucleus of an atom

25 Clues: neutral particle in the nucleus of an atom • vertical column of elements in the periodic table • vertical column of elements in the periodic table • ability of a substance to conduct electricity or heat • catalyst involved in chemical reactions in living things • element that has both metallic and non metallic properties • ...

C1.1 Enzymes and Metabolism 2026-03-18

Across

inhibition A form of enzyme inhibition where a molecule binds to an allosteric site, causing a change in the active site that prevents catalysis
the substance on which an enzyme acts
A chemical reaction where macromolecules are broken down into monomers by the addition of water
minimum amount of energy required to initiate a chemical reaction
A specific region on an enzyme, separate from the active site, where an inhibitor can bind to regulate enzyme activity
____ reduce cholesterol levels and heart disease risk
____ inhibit transpeptidase needed for bacteria to build cell walls
a specific three-dimensional region on an enzyme where substrate molecules bind and undergo a chemical reaction
satins block the enzyme ____ to stop any further steps in the pathway
A regulatory mechanism where the end product of a metabolic pathway inhibits an earlier enzyme in the pathway to stop further production

Down

theory that states for a reaction to occur reactant particles must collide with sufficient activation energy and in correct orientation
where proteins lose their native three-dimensional structure and becomes non-fucntional
biological catalysts made by cells to speed up reactions
An intracellular metabolic pathway that breaks down glucose, forming part of cellular respiration
substance that increases rate of chemical reaction without undergoing any permanent chemical change itself
A form of enzyme inhibition where a molecule binds reversibly to the active site, competing with the substrate
all chemical processes in an organism

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