chemical reaction Crossword Puzzles

Biology Ch. 2 Terms 2022-09-15

Across

having an asymmetrical shape because of differing charges
stored chemical energy that holds two atoms together
a substance that dissolves to form hydrogen ions
the smallest part of a covalent compound
physical stuff that makes up the universe
the starting materials of a chemical reaction
organic compounds made of carbons, hydrogen, and oxygens
basic building blocks of matter
the attraction of water to itself
containing carbon
also known as fats
the measure of the average speed of particles
the process by which one substance is broken into smaller pieces by another substance
the immaterial stuff that gets things done

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a substance used to reduce a catalyst's undesired effects
the tendency of living things to spread out
the final materials in a chemical reaction
the tendency of particles to spread out
naturally-occurring catalysts in living things
made up of amino acids
the attraction of water to other substances
the basic building blocks of nucleic acids
a substance that provides an alternate rout from reactants to products that doesn't require as much energy
a substance that dissolves to form hydroxide ions
a pure substance made of two or more elements chemically combined
pure substances made of only one kind of atom

26 Clues: containing carbon • also known as fats • made up of amino acids • basic building blocks of matter • the attraction of water to itself • the tendency of particles to spread out • the smallest part of a covalent compound • physical stuff that makes up the universe • the final materials in a chemical reaction • the basic building blocks of nucleic acids • ...

Science 2021-06-03

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A force of attraction that holds atoms or ions together in a molecule or crystal.
If the numbers of each type of atom are different on the two sides of a chemical equation, then the equation is _________
term used for the elements and compounds after chemical reaction takes place
term used for the elements and compounds before chemical reaction takes place

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change, Changes affecting the form of a chemical substance, but not its chemical composition.
the amount of matter in any given object
When both sides of a chemical equation have the same number of atoms it is __________
the smallest unit of ordinary matter that forms a chemical element.
Any substance that has mass and takes up space by having volume

9 Clues: the amount of matter in any given object • Any substance that has mass and takes up space by having volume • the smallest unit of ordinary matter that forms a chemical element. • term used for the elements and compounds after chemical reaction takes place • term used for the elements and compounds before chemical reaction takes place • ...

Physics 2020-03-15

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name one metal which exist in free state
acid suffix used for acid
I am constant during refraction guess who am I
c60also known as
n butane and and 2 methylpropane are
decay if pH of the mouth is less than 5.5 causes
Hgs is called
converging lens
a current carrying helical coil is known as

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valence bond theory proposed by
in thermite reaction who acts as a reducing element
the substance which does not take participate in a chemical reaction but changes the rate of reaction
red strontium chloride gives.. flame
unit of power
most electron affinity element
Nano tubes is invented by
ore froth flotation method is used for
evaporation is a
if you want high resistance then what we have to connected resistors in series and parallel

19 Clues: unit of power • Hgs is called • converging lens • c60also known as • evaporation is a • Nano tubes is invented by • most electron affinity element • valence bond theory proposed by • n butane and and 2 methylpropane are • acid suffix used for acid • name one metal which exist in free state • a current carrying helical coil is known as • ...

Chemical Reactions Review 2022-05-03

Chemical Reactions Review crossword puzzle

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end result of a chemical reaction
an insoluble solid that's created when two liquids are mixed together
reaction that releases energy into the environment
starting substances
a limitation
solids,liquids,and gases
reaction that absorbs energy from the environment
to cause to disperse or disappear
where one or more substances get altered

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a process in which two or more substances are converted into one or more substances
the energy of motion of particles within a substance
one or more new substances
protecting a natural substance
says that the mass of the reactants is always going to be equal to the mass of the product
a means of judging
a demo/model
container where reactants/products can escape
pull out metal to reuse it
container where none of the reactants/products can escape

19 Clues: a limitation • a demo/model • a means of judging • starting substances • solids,liquids,and gases • one or more new substances • pull out metal to reuse it • protecting a natural substance • end result of a chemical reaction • to cause to disperse or disappear • where one or more substances get altered • container where reactants/products can escape • ...

TYPES OF REACTIONS 2024-05-11

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The chemical formula of magnesium oxide is ______.
What type of reaction is respiration
removal of oxygen is called
A compound used for whitewashing is
The condition produced by aerial oxidation of fats and oils in foods marked by unpleasant smell and taste is called
When a magnesium ribbon is burnt in air, the ash formed is
A substance added to food containing fats and oils is called

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…………. is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on their surface.
Reactions in which energy is given out are known as
Reaction in which an element displaces another element from its compound is called
Identify the type of reaction: H2 + Cl2 → 2HCl
What type of chemical reactions take place when electricity is passed through water?
The addition of oxygen to a substance is called
How is the decomposition of silver chloride carried out?
Precipitation reactions produce insoluble
Which metal can prevent the corrosion of tin?

16 Clues: removal of oxygen is called • A compound used for whitewashing is • What type of reaction is respiration • Precipitation reactions produce insoluble • Which metal can prevent the corrosion of tin? • Identify the type of reaction: H2 + Cl2 → 2HCl • The addition of oxygen to a substance is called • The chemical formula of magnesium oxide is ______. • ...

Vocab 6B 2017-03-20

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reactions A chemical reaction in which heat is released and usually feels warm when the heat is released from the reaction.
A chemical reaction that requires an input of energy and usually feels cold when it absorbs heat in the reaction.
elements that have some properties of metals and non-metals and are found along the zigzag on the Periodic Table.
electrons on the outermost energy level of an atom that determine the reactivity of the atom.

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states that matter is neither created nor destroyed in ordinary chemical and physical changes.
horizon row of elements
veritable line of elements
an interaction that holds atoms together.

8 Clues: horizon row of elements • veritable line of elements • an interaction that holds atoms together. • electrons on the outermost energy level of an atom that determine the reactivity of the atom. • states that matter is neither created nor destroyed in ordinary chemical and physical changes. • ...

Chemistry terms 2023-02-18

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Chemical glass
Chemical element that represents silver
Base that can dissolve in water
Interact and undergo a chemical or physical change.
A colloidal suspension of particles dispersed in air or gas
An organic compound containing the group —C(O)NH2
Common container for liquids in chemistry
The product of alcohol oxidation
A very large quantity of something
Atom with net electric charge
Old chemical name for "water"
The simplest and smallest ketone
A chemical used to make materials whiter or for sterilizing
The negatively charged electrode
An apparatus used to turn vapours into liquids by cooling them down
Two or more metals combined
The action of adding an ingredient to something else
When as a result of reaction to initial compound was added new one
Something that settled to the bottom of liquid
The action of purifying a liquid by a process of heating and cooling.
A graduated glass tube with a tap at one end which is used for titration
An apparatus for stirring liquid
The sticking together of particles of different substances
First representative of saturated hydrocarbons
The existence of a chemical element in two or more forms

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The state or process of rotting
A substance that remains after a process
A thin sphere of liquid enclosing air or another gas
A vessel used to melt substances, usually metallic elements, prior to casting
To decrease a concentration of solution
The mass of a particular substance that can displace one gram of hydrogen or eight grams of oxygen
A set of numbers used for measuring things
A glass container for removing moisture
Chemical term for "dry"
Any substance that gives a visible sign of the presence or absence of a threshold concentration of a chemical species
First representative of aromatic hydrocarbons
Without a clearly defined shape
Compound that gives off H+ ions in solution.
A compound of metal and -OH group
The opposite of accelerator
The substance that causes chemical reaction
A compound of metal and acidic residue
A hollow container, especially one used to hold liquid
The temperature at which a liquid bubbles and turns to vapour
A strong force of attraction holding atoms together in a molecule

45 Clues: Chemical glass • Chemical term for "dry" • Two or more metals combined • The opposite of accelerator • Atom with net electric charge • Old chemical name for "water" • The state or process of rotting • Base that can dissolve in water • Without a clearly defined shape • The product of alcohol oxidation • The simplest and smallest ketone • The negatively charged electrode • ...

Rates of Reactions 2017-05-02

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Form of limestone reacting slowly
The amount of energy needed for a reaction to begin
The amount of particles in a given volume
The unit of time
Form of limestone reacting fast

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The speed with which a particular chemical reaction progresses
The larger that is the faster the rate of reaction
Particles must do this before they react
A substance that changes the rate of reaction without being used up
Increasing the temperature gives the particles more ……….
A biological catalyst

11 Clues: The unit of time • A biological catalyst • Form of limestone reacting fast • Form of limestone reacting slowly • Particles must do this before they react • The amount of particles in a given volume • The larger that is the faster the rate of reaction • The amount of energy needed for a reaction to begin • Increasing the temperature gives the particles more ………. • ...

Vocab words for science 2023-10-19

Vocab words for science crossword puzzle

Across

A substance or molecule that is formed in a chemical reaction; the final output.
Happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials.
A change of matter from one form to another without a change in chemical properties; only physical changes.
A solid formed by a change in a solution, often due to a chemical reaction or change in temperature.

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States that the mass of an object, or collection of objects changes, no matter how the parts are rearranged.
A substance or molecule that participates in a chemical reaction; the ingredients that you start with
A change that occurs when one or more substances change into entirely new substances with different properties.
A representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product.

8 Clues: A substance or molecule that is formed in a chemical reaction; the final output. • A solid formed by a change in a solution, often due to a chemical reaction or change in temperature. • A substance or molecule that participates in a chemical reaction; the ingredients that you start with • ...

Vocabulary of Chemical Reaction 2024-10-15

Vocabulary of Chemical Reaction crossword puzzle

Across

a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a change that occurs when one or more substances change into entirely new substances with different properties
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
a substance or molecule that is formed in a chemical reaction; the final output

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a change of matter from one form to another without a change in chemical properties; only physical changes
happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

8 Clues: a substance or molecule that is formed in a chemical reaction; the final output • a solid formed by a change in a solution, often due to a chemical reaction or change in temperature • a substance or molecule that participates in a chemical reaction; the ingredients that you start with • ...

science 2025-10-16

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a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a change of matter from one form to another without a change in chemical properties; only physical changes
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a substance or molecule that participates in a chemical reaction; the ingredients that you start with

Down

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged
change that occurs when one or more substances change into entirely new substances with different properties
a substance or molecule that is formed in a chemical reaction; the final output

science crossword 2025-10-16

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a change of matter from one form to another without a change in chemical properties; only physical changes
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Down

a change that occurs when one or more substances change into entirely new substances with different properties
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a substance or molecule that is formed in a chemical reaction; the final output
happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials

AP Unit 4 Crossword 2022-03-24

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an organic molecule serving as a cofactor; most vitamins function as these in metabolic reactions
a process that occurs without an overall input of energy; a process that is energetically favorable
a temporary complex formed when an enzyme binds to its substrate molecule
the capacity to cause change, especially to do work (to move matter against an opposing force
energy available in molecules for release in a chemical reaction; a form of potential energy
the energy that matter possesses as a result of its location of spatial arrangement

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a spontaneous chemical reaction in which there is a net release of free energy
a measure of molecular disorder, or randomness
thermal energy in transfer from one body of matter to another
a nonspontaneous chemical reaction in which free energy is absorbed from the surroundings

10 Clues: a measure of molecular disorder, or randomness • thermal energy in transfer from one body of matter to another • a temporary complex formed when an enzyme binds to its substrate molecule • a spontaneous chemical reaction in which there is a net release of free energy • the energy that matter possesses as a result of its location of spatial arrangement • ...

Chemistry Review 2019-11-04

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Compounds produced in a chemical reaction
2 words Gas that traps heat in Earth's atmosphere preventing heat from escaping into space
Type of reaction where carbon dioxide and water are produced
A metal (usually iron) rusts or is oxidized
2 words Examples are coal, oil, natural gas and gasoline
Substance usually containing hydroxide with a pH greater than 7
Process of applying a zinc coating to protect iron or steel

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Installed on smokestacks to prevent harmful products from entering the environment
Chemical in the air that causes harm to living things or the environment
2 words One of the key greenhouse gases that scientists are most concerned with
Type of reaction where an acid and a base combine
Substance containing hydrogen in solution with a pH less than 7

12 Clues: Compounds produced in a chemical reaction • A metal (usually iron) rusts or is oxidized • Type of reaction where an acid and a base combine • 2 words Examples are coal, oil, natural gas and gasoline • Process of applying a zinc coating to protect iron or steel • Type of reaction where carbon dioxide and water are produced • ...

Proteins 2021-09-20

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Protein produced by living cells which act as a biological catalyst which speeds up chemical reactions
A protein that is involved in defence in animals
Fitting together like a hand in a glove
The position on the surface of an enzyme molecule to which specific substrate molecules can bin d
The substance made by an enzyme-catalysed reaction
A reaction that breaks large molecules into smaller ones
The shape of the active site is complementary to this

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Each different enzyme acts on only one substrate
Cell surface protein which allows a cell to recognise specific substrates
Protein released by an endocrine gland into the blood to act as a chemical messenger
Examples include proteins in membranes, muscle, bone and nails
A reaction that builds smaller molecules into larger ones

12 Clues: Fitting together like a hand in a glove • Each different enzyme acts on only one substrate • A protein that is involved in defence in animals • The substance made by an enzyme-catalysed reaction • The shape of the active site is complementary to this • A reaction that breaks large molecules into smaller ones • ...

Proteins 2021-09-20

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Protein produced by living cells which act as a biological catalyst which speeds up chemical reactions
A protein that is involved in defence in animals
Fitting together like a hand in a glove
The position on the surface of an enzyme molecule to which specific substrate molecules can bind
The substance made by an enzyme-catalysed reaction
A reaction that breaks large molecules into smaller ones
The shape of the active site is complementary to this

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Each different enzyme acts on only one substrate
Cell surface protein which allows a cell to recognise specific substrates
Protein released by an endocrine gland into the blood to act as a chemical messenger
Examples include proteins in membranes, muscle, bone and nails
A reaction that builds smaller molecules into larger ones

Module 2 2025-08-18

Across

of vaporization
pool
Table
cycle
molecule
reaction
formula
tension
bond

Down

symbol
reaction
reaction
heat

13 Clues: pool • heat • bond • Table • cycle • symbol • formula • tension • reaction • reaction • molecule • reaction • of vaporization

2.4: Chemical Reactions and enzymes 2021-09-08

2.4: Chemical Reactions and enzymes crossword puzzle

Across

minimum amount of energy needed to begin a chemical reaction
the reactants of enzyme catalyzed reactions
process that changes one set of compounds into another
elements or compounds produced by a chemical reaction

Down

elements or compounds that engage in a reaction
biological catalyst; a protein
a substance that speeds up the rate of a reaction without being consumed by the reaction

7 Clues: biological catalyst; a protein • the reactants of enzyme catalyzed reactions • elements or compounds that engage in a reaction • elements or compounds produced by a chemical reaction • process that changes one set of compounds into another • minimum amount of energy needed to begin a chemical reaction • ...

chapter 2 vocab 2013-09-23

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Deoxyribouncleic acid
A pure substance made of only one kind of atom
Compounds that form hydrogen ions when dissolved into water
The energy needed to start a chemical reaction
The hydrogen bonds between water molecules
Smallest unit of life
A substance made of the joined atoms of two or more elements
Usually a large molecule formed by linking smaller molecules
The building blocks of protein
An atom or molecule that has gained or lost one or more electron
Made of three parts: sugar, a base, and a phosphate
on which an enzyme acts during a chemical reaction
The ability to move or change matter
An attraction between different substances

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A long chain of smaller molecules
Compounds that reduce the concentration of hydroxide ions
Non polar molecules that are not soluble or mostly insoluble in water
The building blocks of carbohydrates
Organic compounds made of carbon, hydrogen, and oxygen atoms
A large protein with fold from pockets
Riboncleic acid
Two or more atoms that share electrons to form a molecule
Adenosine triphosphate
A mixture in which one or more substances are evenly distributed
Substances that increase the speed of chemical reactions

25 Clues: Riboncleic acid • Deoxyribouncleic acid • Smallest unit of life • Adenosine triphosphate • The building blocks of protein • A long chain of smaller molecules • The building blocks of carbohydrates • The ability to move or change matter • A large protein with fold from pockets • The hydrogen bonds between water molecules • An attraction between different substances • ...

science terms :D 2012-12-04

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rays a form of energy that you cannot see or feel
Meter sticks or metric rulers are used to measure
a gas that occurs naturally
split apart
The base unit for length
this makes up molecules
a chemical change in which oxygen reacts with other substances
Celsius The base unit for temperature
is formed in the earth from radium, which is also radioactive
the prediction of what will happen
can slowly destroy objects made of iron or steel
The base unit for Mass
A thermometer is used to measure
of conservation of mass the fact that matter can neither be created nor destroyed by any chemical reaction
reaction one or more substances change to form new substances
the stuff that makes up everything
how tightly packed the molecule are

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is made of molecules
a plentiful fossil fuel
putting together
the study of rocks
this is a theory
fusion a change in which small nuclei join to form a larger nucleus
inquiring of something you don't know
elements elements whose nuclei naturally break down into other nuclei, giving off particles and energy
the stuff that makes up matter
Graduated cylinders & beakers are used to measure

27 Clues: split apart • putting together • this is a theory • the study of rocks • is made of molecules • The base unit for Mass • a plentiful fossil fuel • this makes up molecules • The base unit for length • a gas that occurs naturally • the stuff that makes up matter • A thermometer is used to measure • the prediction of what will happen • the stuff that makes up everything • ...

Science Unit B 2014-11-03

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experimented with the behavior of gases
the 7 rows in the periodic table
book describing the achievements of alchemists
a compound formed when 2 non-metals combine
NaCl
1 electron 1 proton and 0 neutrons
organic catalyst
no additional material is allowed to enter or leave
the 18 columns in the periodic table
an atom or group of atoms that become electrically charged because it has lost or gained electrons
a new substance produced in a chemical reaction

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absorbs heat
material is allowed to leave and enter
occurs when oxygen reacts with a new substance to form a new substance and give off energy
Workplace Hazardous Materials Information System
hardest material on the Mohs' hardness scale
the mass of the reactants always equal the mass of the products
Slow chemical change that occurs when oxygen in the air reacts to metal
releases heat
studied chemical reactions
a substance that reacts with another substance or substances to create something new
substances that help a reaction proceed faster
the last Alkali metal on the Periodic table of elements
used the word "Atomos"
Gas to Solid and vice versa
number that represents the number of atoms
"indivisible'

27 Clues: NaCl • absorbs heat • releases heat • "indivisible' • organic catalyst • used the word "Atomos" • studied chemical reactions • Gas to Solid and vice versa • the 7 rows in the periodic table • 1 electron 1 proton and 0 neutrons • the 18 columns in the periodic table • material is allowed to leave and enter • experimented with the behavior of gases • ...

Concepts of basic chemistry 2017-01-02

Concepts of basic chemistry crossword puzzle

Across

Electrolytes act as ___________ to maintain pH in the body.
A primary, simple substance that cannot be broken by chemical means.
_____________ refers to a high pH and low hydrogen circulating in extracellular fluid.
These ions contain a negative charge.
Electrolytes exert ___________ pressure to contain bodily fluids in their compartments.
The chemistry of life processes.
The breakdown of large molecules into smaller molecules.
The science that deals with elements and molecular structure.
Something that has mass and occupies space.
A substance that has more than one element.

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pH is the measure of ____________ ions in a solution such as blood.
The building up of small molecules into bigger molecules.
_____________ is a metabolic pathway of thew body.
7.35 - 7.45 is the normal pH of which bodily fluid?
An ionic compound that when dissolved in water conducts electricity.
The kidneys aid in regulating body pH through the reabsorption of ______________ ions.
This is released as a result of a chemical reaction.
The main form of energy used and produced by the body.
These ions contain a positive charge.
A chemical ______________ is the result of the atoms of an element rearranging themselves to form a new substance.
The smallest unit of an element.

21 Clues: The chemistry of life processes. • The smallest unit of an element. • These ions contain a negative charge. • These ions contain a positive charge. • A substance that has more than one element. • Something that has mass and occupies space. • _____________ is a metabolic pathway of thew body. • 7.35 - 7.45 is the normal pH of which bodily fluid? • ...

Ecology Terminology 2023-07-06

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A chemical reaction that makes food (occurring in plants)
A consumer that obtains its nutrients by feeding off the body of another living
Producers
An organism that makes its own food.
Energy used by plants for photosynthesis
Non-living components of an ecosystem
Community of living organisms and the environment they live in.
A meat-eating consumer.
An organism that eats other organisms to obtain nutrients.
An organism’s physical, chemical and biological surroundings.
A chemical reaction that releases energy from food.

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An organism that obtains its nutrients by breaking down dead organisms and
A group of organisms of the same species living in a particular community.
A plant-eating consumer.
Organisms that share an environmental resource, e.g. animals that eat the same
The living components of an ecosystem
moving between its living and non-living components)
Different species of organisms living together in a particular place.
The place in which an organism lives
Process in which materials in an ecosystem are reused over and over again (by
A consumer that feeds off the bodies of dead organisms.
All living organisms are found in this ‘sphere’ (or layer around the Earth)
Study of the interrelationships between organisms and their environments.

23 Clues: Producers • A meat-eating consumer. • A plant-eating consumer. • An organism that makes its own food. • The place in which an organism lives • The living components of an ecosystem • Non-living components of an ecosystem • Energy used by plants for photosynthesis • A chemical reaction that releases energy from food. • moving between its living and non-living components) • ...

Science Crossword 2023-07-10

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A substance that speeds up a chemical reaction without depleting
What is the name for the selective boiling and subsequent condensation of a component in a liquid mixture
Liquid which has passed through a filter
To make a product safe for consumption by heating
A chemical that contains information on how to make an organism (acronym)
nurturances that store fat for the body
A material that physically attracts other substances
A process that results in changes in the genetic material of a population over time
A unit of measurement, symbol is v
A negatively charged occurrence that is commonly found in an atom
A material with small holes that make it able to absorb liquid

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A substance that does not dissolve
An organisms that share characteristics and are able to produce off spring
What is the name for a process that breaks up protein and changes its three-dimensional structure
A place where an organism makes its home
What is the chemical reaction used by micro organisms to convert glucose into energy
A type of stone made when magma or lava cools
The name for the group 7 elements
Organisms that are exact genetic copies
A creature eaten by other animals

20 Clues: The name for the group 7 elements • A creature eaten by other animals • A substance that does not dissolve • A unit of measurement, symbol is v • nurturances that store fat for the body • Organisms that are exact genetic copies • Liquid which has passed through a filter • A place where an organism makes its home • A type of stone made when magma or lava cools • ...

Chemistry - MT 1 2023-12-07

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particles of light
a negatively charged ion
unit of energy
a positively charged ion
elements found between metals and nonmetals
bonds formed when atoms share electrons
a mixture in which substances are evenly distributed throughout the mixture
a horizontal row of elements on the periodic table
0 kelvin
elements found to the left side of the periodic table

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a reaction that absorbs energy in the form of heat
group 1 elements
group 17 elements
smallest particle of an element
Avogadro's number of anything
anything that has mass and takes up space
groups of two or more atoms held together by chemical bonds
elements found at the far right side of the periodic table
a chemical reaction that gives off heat
groups 3-12 on the periodic table
the study of the properties of matter and how matter changes
bonds resulting from the attraction between oppositely charged ions
atoms of the same element with different numbers of neutrons
a region in an atom where there is a high probability of finding electrons
a number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound

25 Clues: 0 kelvin • unit of energy • group 1 elements • group 17 elements • particles of light • a negatively charged ion • a positively charged ion • Avogadro's number of anything • smallest particle of an element • groups 3-12 on the periodic table • a chemical reaction that gives off heat • bonds formed when atoms share electrons • anything that has mass and takes up space • ...

science 2023-11-22

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a number placed in front of an element symbol or chemical formula in an equation
stored energy
the amount of matter in an object
occurs when one substance reacts to another
the mass per unit volume of a substance
a charachteristic of matter that can be observed
could be hot or cold
more energy is released when the products form than is required
energy due to motion
occurs when substances react with oxidizing agents changing it to a new substance
the amount of force per unit area applied to an objects surface
the amount of space an item takes up
more energy is required to break the bonds of the reactants

Down

the ability to burn
matter with a composition that is always the same
from a liquid to a gas
two or more atoms that are held together by convalent bonds
when atoms form new bonds
a starting substance in a chemical reaction
the energy released when atoms form bonds
the result of the motipon of all the particles heating the substance up
a substance produced by a chemical reaction
a substance containing one or more different elements chemically bonded together
smallest thing in the universe
consists of only one type of atom

25 Clues: stored energy • the ability to burn • could be hot or cold • energy due to motion • from a liquid to a gas • when atoms form new bonds • smallest thing in the universe • the amount of matter in an object • consists of only one type of atom • the amount of space an item takes up • the mass per unit volume of a substance • the energy released when atoms form bonds • ...

science 2023-11-22

Across

a number placed in front of an element symbol or chemical formula in an equation
stored energy
the amount of matter in an object
occurs when one substance reacts to another
the mass per unit volume of a substance
a charachteristic of matter that can be observed
could be hot or cold
more energy is released when the products form than is required
energy due to motion
occurs when substances react with oxidizing agents changing it to a new substance
the amount of force per unit area applied to an objects surface
the amount of space an item takes up
more energy is required to break the bonds of the reactants

Down

the ability to burn
matter with a composition that is always the same
from a liquid to a gas
two or more atoms that are held together by convalent bonds
when atoms form new bonds
a starting substance in a chemical reaction
the energy released when atoms form bonds
the result of the motipon of all the particles heating the substance up
a substance produced by a chemical reaction
a substance containing one or more different elements chemically bonded together
smallest thing in the universe
consists of only one type of atom

chemistry bonus 2024-05-01

Across

point where two phases of a substance becomes indistinguishable from each other
a compound that can act as either an acid or a base
the minimum amount of energy that must be applied to a system to initiate a chemical change
strong acids and bases ____ in water
NaOH, KOH, Ca(OH)2, Ba(OH)2 are examples of ___
the species produced when a base accepts a hydrogen ion (H+) from an acid
to find the concentration of a basic solution, titrate with a known ___
the change in heat of the products from the reactants
monoprotic acid donates ___ proton per molecule
to find the concentration of an acidic solution, titrate with a known ___

Down

neutralization is what type of reaction
solid to gas
a procedure in which the concentration of a solution is determined by comparing it to a solution of known concentration
as temperature _____ increases according to Gay-Lussac's law.
HCl, HNO3, H2So4 are examples of ____
the total amount of energy; movement
the point at which the indicator used in a titration changes color.
gas to a solid
salt is what type of compound
a substance that speeds up a chemical reaction without itself undergoing any chemical change

20 Clues: solid to gas • gas to a solid • salt is what type of compound • the total amount of energy; movement • strong acids and bases ____ in water • HCl, HNO3, H2So4 are examples of ____ • neutralization is what type of reaction • NaOH, KOH, Ca(OH)2, Ba(OH)2 are examples of ___ • monoprotic acid donates ___ proton per molecule • a compound that can act as either an acid or a base • ...

Photosynthesis & Cellular Respiration 2025-03-06

Photosynthesis & Cellular Respiration crossword puzzle

Across

Gas that plants take in for photosynthesis and needed for cellular respiration
The organelle where cellular respiration takes place
The energy required for photosynthesis comes from this...
The process that occurs in organisms to release energy from food for cells
Photosynthesis and cellular respiration together makes up a ____________ where each provides what is needed for the other process.
The location where water is absorbed by plants.
The organelle where photosynthesis takes place
The main source of energy for photosynthesis
The molecule that stores energy released during cellular respiration

Down

The process that occurs in plants to make food
Sugar produced during photosynthesis and broken down in cellular respiration
The gas that plants release during photosynthesis and is needed for cellular respiration
Photosynthesis and Cellular Respiration are both types of ______________ that uses chemical compounds and creates new ones.
This type of organism goes through both photosynthesis and cellular respiration.
The liquid needed for photosynthesis to occur and is also produced in cellular respiration
The things produces in a chemical reaction.
The things needed for a chemical reaction to take place.
The openings in leaves that allow gases to move in and out
The pigment that captures sunlight in plant cells
Where the first stage of cellular respiration takes place.

20 Clues: The things produces in a chemical reaction. • The main source of energy for photosynthesis • The process that occurs in plants to make food • The organelle where photosynthesis takes place • The location where water is absorbed by plants. • The pigment that captures sunlight in plant cells • The organelle where cellular respiration takes place • ...

ENVIRONMENTAL SCIENCE 2025-07-21

Across

common chemical substance on Earth
excess water that flows across land
All biochemical reactions in an organism
the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
pH higher than 7
the solid outer mantle of Earth
pH lower than 7
A metabolic process where cells get energy (ATP) by using oxygen and releasing carbon dioxide from breaking down organic substances.
the ability to do work
the science that deals with the earth's physical structure and substance, its history, and the processes that act on it.
has mass and takes up space
breaking down of rocks and minerals
study of energy
all types of water resources

Down

a pure substance
substance formed after a chemical reaction
where life operates
found in water, soil, sediments
removal of material via water
essential in organic compound
dependence on natural resources
made two or more elements
Substance that reacts in a chemical reaction
return to earth via rain
body of knowledge from study and experiment
done when force is applied over distance
concentration of hydronium ions
the protective blanket of gases
smallest particle of an element
rate at which energy is used

30 Clues: pH lower than 7 • study of energy • a pure substance • pH higher than 7 • where life operates • the ability to do work • return to earth via rain • made two or more elements • has mass and takes up space • all types of water resources • rate at which energy is used • removal of material via water • essential in organic compound • found in water, soil, sediments • ...

AG 2022-10-31

Across

process: A method of using economic input.
The chemical breakdown of substance.
The sale of goods to the public.
A person who purchase goods.
The selling of goods.
Borne Illness: caused by consuming contaminated food.
An insistent and peremptory
sensory Testing: The use of the human senses in the objective.
Perform a series of mechanical operation.
An incidental or secondary.
A chemical element or substance
A person, company, or country.

Down

Gather or killing.
An agent who supplies goods to stores.
Integration: The combination in one company of two or more stages.
processing: Any method used to turn fresh food into food products.
nutrient: A chemical element of substances required.
A stock of a resource
A substance that causes an allergic reaction
Production chain: The processes that describe how food from.
The loss or remove.
The quality of having origin or course.
The temperature was well above freezing.

23 Clues: Gather or killing. • The loss or remove. • A stock of a resource • The selling of goods. • An insistent and peremptory • An incidental or secondary. • A person who purchase goods. • A person, company, or country. • A chemical element or substance • The sale of goods to the public. • The chemical breakdown of substance. • An agent who supplies goods to stores. • ...

Structure of Matter 2019-05-05

Across

A substance made up of only one kind of atoms that cannot be broken down into simpler substances by chemical methods.
The atoms of many elements cannot exist independently in nature and called _______ elements.
The smallest particle of an element or a compound that can exist independently.
The number of atoms present in a molecule of an element.
The smallest particle of an element that can take part in a chemical reaction.
The combining capacity of an element to attain stability.
These are used to represent elements.

Down

These are used to represent compounds.
Certain elements show more than one valency, they exhibit _______ valency.
The atoms of some elements can exist independently and called ________ elements.
A substance formed by the chemical combination of two or more elements in fixed proportions.
The elements or compounds that take part in a chemical reaction are called the _______.

12 Clues: These are used to represent elements. • These are used to represent compounds. • The number of atoms present in a molecule of an element. • The combining capacity of an element to attain stability. • Certain elements show more than one valency, they exhibit _______ valency. • The smallest particle of an element that can take part in a chemical reaction. • ...

Structure of Matter 2019-05-05

Across

Certain elements show more than one valency, they exhibit _______ valency.
The atoms of some elements can exist independently and called ________ elements.
The atoms of many elements cannot exist independently in nature and called _______ elements.
A substance formed by the chemical combination of two or more elements in fixed proportions.
These are used to represent compounds.
These are used to represent elements.
The combining capacity of an element to attain stability.

Down

The elements or compounds that take part in a chemical reaction are called the _______.
The number of atoms present in a molecule of an element.
The smallest particle of an element that can take part in a chemical reaction.
The smallest particle of an element or a compound that can exist independently.
A substance made up of only one kind of atoms that cannot be broken down into simpler substances by chemical methods.

Chemical Reactions 2012-11-14

Across

A reaction which we cannot reverse.
Safety equipment we wear to protect our eyes.
A reaction which can be reversed.

Down

The flame we use to heat things.
A sign that a gas is being produced in a reaction.
A gas which can be detected using lime water.
The flame we use when we are not heating.
A gas produced during some chemical reactions.

8 Clues: The flame we use to heat things. • A reaction which can be reversed. • A reaction which we cannot reverse. • The flame we use when we are not heating. • A gas which can be detected using lime water. • Safety equipment we wear to protect our eyes. • A gas produced during some chemical reactions. • A sign that a gas is being produced in a reaction.

Matter 2022-10-27

Across

temperature related
scales with amount
identity and ratio of the things of which a thing is made
material in which electrons are shared between many atoms
molecule with >1 type of atom
state in which atoms are free to roam in three dimensions
matter with uniform properties
Type of bond in which electrons are not mobile.
process that converts thermal energy into potential energy
deliberately created by humans
something partially or totally consumed in a reaction
6.022E23

Down

measured with a balance
non-uniform
smallest part of an element that retains all its properties
You need to see, but rarely see.
energy, energy needed for a chemical reaction to proceed
>1 unbonded touching substances
self-sustaining exothermic reaction with oxygen gas.
made from only one atom
mass/volume
has mass and takes up volume
element 6

23 Clues: 6.022E23 • element 6 • non-uniform • mass/volume • scales with amount • temperature related • measured with a balance • made from only one atom • has mass and takes up volume • molecule with >1 type of atom • matter with uniform properties • deliberately created by humans • >1 unbonded touching substances • You need to see, but rarely see. • Type of bond in which electrons are not mobile. • ...

A Year of Chemistry 2022-11-28

Across

type of ion that forms with loss of electrons
organic compound with an OH
four carbon alkane
the reaction between hydrocarbons and oxygen alkaline a soluble base
smallest particle of matter
the reaction type for substances breaking down
two or more atoms bonded together
a compound that releases H+ in water
organic compound with a double bond
the smallest element
nail polish remover
an chemical interaction between two substances state the type of symbol that describes physical appearance
a charged particle

Down

five carbon alkane
'double ....' between two ionic solutions electrons negatively charged subatomic particles
an ion that forms an insoluble salt with silver
a compound that forms a solution with a pH over 7
the charge of an atom
the bond between two nonmetals
branch of chemistry studying carbon compounds
the bond between metals and nonmetals
2 carbon alkane

22 Clues: 2 carbon alkane • five carbon alkane • four carbon alkane • a charged particle • nail polish remover • the smallest element • the charge of an atom • organic compound with an OH • smallest particle of matter • the bond between two nonmetals • two or more atoms bonded together • organic compound with a double bond • a compound that releases H+ in water • ...

7th Grade Key Terms 2023-05-22

Across

a property that describes how well one substance dissolves in another substance
to change state from a solid to a gas
a push or a pull on an object
to change state from a gas to a solid
a solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern
an individual particle of an element
a limitation on the range of possible solutions to a design
a representation of an object which makes important aspects easier to see
when referring to forces, pulling together
a full-scale, working model of a design that can be tested as part of the design process
a chemical reaction that releases more energy to the surroundings than it absorbs
a property that describes the mass of a certain volume of matter
the requirements that must be met for an engineering solution to be successful
the state of matter in which atoms or molecules are completely separated from one another by empty space and can move around independently of one another
the amount of force exerted over a certain area
a chemical reaction that absorbs more energy from the surroundings than it releases
to change state from a gas to a liquid
a substance that exists before a chemical reaction takes place and changes as a result of the reaction
to change state from a liquid to a gas at the surface of the liquid
a unique particle of matter that is a fundamental building block of matter

Down

a shorthand notation of one, two, or three letters that represent the name of the element
a new substance that forms during a chemical reaction
a measure of the average kinetic energy of the particles of a substance
an amount of something measured per unit of something else
the rate of change of an object’s velocity; can be speeding up, slowing down, or changing direction
a characteristic of matter
on a scale that people can see with their eyes
the distance and direction that an object is from a reference point
able to be broken down into smaller molecules by biological agents, such as bacteria
the path that an object in space follows around another object due to gravitational forces between the objects
the state of matter in which atoms or molecules are closely packed and touching one another in fixed positions
a group of two or more atoms that are held together by chemical bonds
a force that opposes motion between two surfaces that are touching
a unit used to measure the strength of a force
a type of extended structure that is made of many smaller, repeating subunits in a chain
matter that has a constant chemical composition and characteristics
the amount of gravitational force on an object
the state of matter in which atoms or molecules are closely packed and touching one another but are not held in fixed positions
the amount of matter in an object or sample
an object’s speed and direction of motion
the rate that describes how far an object moves over time
thermal energy transferred from a warmer object to a cooler one

42 Clues: a characteristic of matter • a push or a pull on an object • an individual particle of an element • to change state from a solid to a gas • to change state from a gas to a solid • to change state from a gas to a liquid • an object’s speed and direction of motion • when referring to forces, pulling together • the amount of matter in an object or sample • ...

Review 1 - Final Test Semester 1 Grade 11 2024-11-13

Review 1 - Final Test Semester 1 Grade 11 crossword puzzle

Across

Organic compounds required in small amounts for various biochemical reactions in the body, often functioning as enzyme cofactors.
A single-stranded nucleic acid involved in protein synthesis and gene regulation.
An RNA molecule that helps decode mRNA sequences into proteins by bringing the appropriate amino acids to the ribosome.
A covalent bond formed between the amino group of one amino acid and the carboxyl group of another, linking amino acids in a protein.
A substance that decreases the activity of an enzyme. Can be competitive, non-competitive, or uncompetitive.
The process by which DNA is copied to produce two identical molecules, ensuring genetic information is passed on during cell division.
A type of RNA that carries genetic information from the DNA to the ribosome, where it is used as a template for protein synthesis.
A protein that accelerates (catalyzes) chemical reactions by lowering the activation energy required for the reaction to proceed.
A non-protein chemical compound that is required for an enzyme’s activity, often a metal ion or a coenzyme.
A three-nucleotide sequence in mRNA that specifies a particular amino acid or a stop signal during protein synthesis.
Non-coding regions of a gene that are transcribed into mRNA but are removed during RNA processing before translation.
The specific region of an enzyme where the substrate binds and undergoes a chemical reaction.
Organic compounds made up of carbon, hydrogen, and oxygen that provide energy to living organisms. Examples include sugars and starches.
Biological macromolecules (DNA and RNA) made of nucleotides that store and transmit genetic information.
The twisted, double-stranded structure of DNA, discovered by Watson and Crick, held together by hydrogen bonds between base pairs.

Down

Chemical modifications (such as phosphorylation, glycosylation, or acetylation) that occur to proteins after translation, affecting their function and activity.
The energy required to start a chemical reaction, which enzymes lower to increase the reaction rate.
Polymers made of amino acids that perform a wide variety of functions, including catalysis (enzymes), structure, and transport.
A molecular machine composed of rRNA and proteins that catalyzes the translation of mRNA into a polypeptide chain.
Lipids with a phosphate group, essential components of cell membranes, having both hydrophilic and hydrophobic properties.
The building blocks of proteins. There are 20 standard amino acids that form proteins through peptide bonds.
A group of hydrophobic molecules, including fats, oils, and phospholipids, that are important for energy storage and membrane structure.
The molecule upon which an enzyme acts during a chemical reaction.
Long chains of monosaccharides that serve as storage forms of energy or structural components, such as starch or cellulose.
A theory describing how the enzyme’s active site adjusts its shape to better fit the substrate once it binds.
The process in which mRNA is used as a template to synthesize proteins at the ribosome.
A small organic molecule (often derived from vitamins) that helps an enzyme perform its catalytic activity.
A double-stranded molecule that stores genetic information in cells, forming the basis of heredity.
The coding regions of a gene that are transcribed into mRNA and translated into protein.
The synthesis of RNA from a DNA template, producing messenger RNA (mRNA) for protein synthesis.
Simple sugars (e.g., glucose, fructose) that are the basic building blocks of carbohydrates.
The basic units of nucleic acids, consisting of a nitrogenous base, a sugar molecule, and a phosphate group.

32 Clues: The molecule upon which an enzyme acts during a chemical reaction. • A single-stranded nucleic acid involved in protein synthesis and gene regulation. • The process in which mRNA is used as a template to synthesize proteins at the ribosome. • The coding regions of a gene that are transcribed into mRNA and translated into protein. • ...

Structure of Matter 2019-05-05

Across

The combining capacity of an element to attain stability.
The atoms of some elements can exist independently and called ________ elements.
Certain elements show more than one valency, they exhibit _______ valency.
A substance formed by the chemical combination of two or more elements in fixed proportions.
These are used to represent elements.
These are used to represent compounds.

Down

The elements or compounds that take part in a chemical reaction are called the _______.
The number of atoms present in a molecule of an element.
The smallest particle of an element or a compound that can exist independently.
The atoms of many elements cannot exist independently in nature and called _______ elements.
The smallest particle of an element that can take part in a chemical reaction.
A substance made up of only one kind of atoms that cannot be broken down into simpler substances by chemical methods.

Energy for Life 2013-04-01

Across

helps enzyme, some made of vitamins
the enzyme that works on maltose
past tense of get
adenosine triphosphate
place in cell where proteins are made
cycle which is a series of reactions not requiring light
first step in aerobic respiration
requiring oxygen
chemical test for starch
gaining electrons
process used in making bread and beer
a chemical catalyst, lowers activation energy
what an enzyme works on
acid that builds up in muscles
enzyme in saliva

Down

powerhouse of the cell
losing electrons
substance that amylase works on
model that explains enzymes
electron carrier for respiration
the test for monosaccharides
electron carrier for photosynthesis
anything that speeds up a reaction
chemical that can absorb light energy

24 Clues: losing electrons • requiring oxygen • enzyme in saliva • past tense of get • gaining electrons • powerhouse of the cell • adenosine triphosphate • what an enzyme works on • chemical test for starch • model that explains enzymes • the test for monosaccharides • acid that builds up in muscles • substance that amylase works on • the enzyme that works on maltose • ...

My crossword ♦♣♠♥→Chimin 2015-06-14

My crossword ♦♣♠♥→Chimin crossword puzzle

Across

all substances made by this small particles
First element in periodic table
The substances produced when two or more elements combine in chemical reaction
Element that name like Albert Einstein

Down

Symbol is Fe
Compound of Hydrogen and oxygen
First element in the periodic table
Symbol of Gold
Second element in periodic table
One way to make chemical reaction that use heat

10 Clues: Symbol is Fe • Symbol of Gold • Compound of Hydrogen and oxygen • First element in periodic table • Second element in periodic table • First element in the periodic table • Element that name like Albert Einstein • all substances made by this small particles • One way to make chemical reaction that use heat • ...

Intro to Chemistry 2022-08-30

Across

A pH above 7
Two or more atoms joined together
Bond in which electrons are equally shared between atoms
A pH below 7
A substance dissolved in a liquid
Number of protons plus the number of neutrons
A negatively charged part of an atom
A liquid mixture
An uncharged part of an atom
Connection between atoms
Liquid, solid, or gas at room temperature

Down

An ingredient or atom that combines with others to cause a reaction
The result of a chemical reaction
A positively charged part of an atom
Bond in which electrons are unequally shared between atoms
An atom in which the number of neutrons is different from the number of protons
Another name for an atom
A substance that speeds up a reaction
A liquid that dissolves a substance
Part of the atom that contains protons and neutrons

20 Clues: A pH above 7 • A pH below 7 • A liquid mixture • Another name for an atom • Connection between atoms • An uncharged part of an atom • The result of a chemical reaction • Two or more atoms joined together • A substance dissolved in a liquid • A liquid that dissolves a substance • A positively charged part of an atom • A negatively charged part of an atom • ...

study guide 2022-09-13

Across

a molecule composed of amino acids joined together by peptide bonds
enzymes that break down starch into sugar
single building block
quick energy
Elements of nucleic acids
monomer of a protein
explain binding between the active site of an enzyme and a substrate molecule
substance that speeds up the rate of a chemical reaction
are the simplest form of carbohydrate
part of the enzyme where the substrate binds
When an enzyme binds to the appropriate substrate, subtle changes in the active site occur
phosphorus groups, nitrogenous base, and sugar make this up

Down

long term energy storage
are relatively more complex carbohydrates. They are polymers made up of many monosaccharides.
A catalyst that brings about a specific biochemical reaction.
Elements of proteins
reactant of an enzyme catalyzed reaction
1:2:1
stores genetic information
Competitive/Non-Competitive

20 Clues: 1:2:1 • quick energy • Elements of proteins • monomer of a protein • single building block • long term energy storage • Elements of nucleic acids • stores genetic information • Competitive/Non-Competitive • are the simplest form of carbohydrate • reactant of an enzyme catalyzed reaction • enzymes that break down starch into sugar • part of the enzyme where the substrate binds • ...

Wyatt Reed - Chemistry 2019-10-17

Across

a liquid with a pH value above 7
a substance formed through a chemical reaction
a subatomic particle with a neutral charge
a liquid with a pH value below 7
The mass of an atom
He made the Table of Elements periodic
a substance that undergoes change during a reaction
toxicity, flammability, and reactivity
a subatomic particle with a positive charge
a mixture that is the same all over (not soup)
a mixture of different metals to make a new metal

Down

a substance that cannot be broken down into simpler substances
when liquid gets cold and turns into a solid
when "clouds" form in a liquid
materials mixed together
color, texture, and density
a subatomic particle with a negative charge
The building blocks of matter
A thing that is made of two or more elements
the reaction of iron, oxygen, and water

20 Clues: The mass of an atom • materials mixed together • color, texture, and density • The building blocks of matter • when "clouds" form in a liquid • a liquid with a pH value above 7 • a liquid with a pH value below 7 • He made the Table of Elements periodic • toxicity, flammability, and reactivity • the reaction of iron, oxygen, and water • a subatomic particle with a neutral charge • ...

CHEMISTRY 2025-11-18

Across

An atom or molecule with a net electrical charge due to the loss or gain of one or more electrons.
The number of protons in the nucleus of an atom.
A substance that cannot be broken down into simpler substances by chemical means.
A mixture where one substance (the solute) is dissolved evenly throughout another substance (the solvent).
A chemical reaction where a substance combines rapidly with oxygen, releasing heat and light.

Down

A chemical bond involving the sharing of electron pairs between atoms.
A substance that increases the rate of a chemical reaction without undergoing a permanent chemical change itself.
The region of space around the nucleus where electrons are most likely to be found.
The process by which a solid changes directly into a gas without first becoming a liquid (e.g., dry ice).
The basic unit of a chemical element.

10 Clues: The basic unit of a chemical element. • The number of protons in the nucleus of an atom. • A chemical bond involving the sharing of electron pairs between atoms. • A substance that cannot be broken down into simpler substances by chemical means. • The region of space around the nucleus where electrons are most likely to be found. • ...

Unit 2 week 2 vocab crossword homework 2021-09-17

Unit 2 week 2 vocab crossword homework crossword puzzle

Across

energy Random kinetic energy possessed by objects in a material
the speed at which a chemical reaction occurs
the number of atoms of a particular element in a chemical reaction
in any chemical process, matter is neither lost or gained
The number placed in front of a compound to balance a chemical equation

Down

A chemical equation where the number of atoms of each element are the same on both sides
this is the rate at which a substance undergoes a chemical change
the measure of quantity of matter

8 Clues: the measure of quantity of matter • the speed at which a chemical reaction occurs • in any chemical process, matter is neither lost or gained • energy Random kinetic energy possessed by objects in a material • this is the rate at which a substance undergoes a chemical change • the number of atoms of a particular element in a chemical reaction • ...

science stuff 2022-03-21

Across

An open system is a system that has external interactions
In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy
he action or process of replacing someone or something.
the state or process of rotting

Down

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols
a substance that takes part in and undergoes change during a reaction.
a thing or person that is the result of an action or process.
a multiplier or factor that measures some property
the production of chemical compounds by reaction from simpler materials.
A closed system is a physical system that does not allow transfer of matter in or out of the system

10 Clues: the state or process of rotting • a multiplier or factor that measures some property • he action or process of replacing someone or something. • An open system is a system that has external interactions • a thing or person that is the result of an action or process. • a substance that takes part in and undergoes change during a reaction. • ...

IMPORTANT TERMS IN CHEMISTRY 2014-01-12

IMPORTANT TERMS IN CHEMISTRY crossword puzzle

Across

energy The amount of energy it takes to break one mole of bonds
fraction The number of moles of stuff in a mixture that are due to one of the compounds
A measurement of the randomness in a system
Law The volume of a gas at constant temperature varies inversely with pressure
A substance that cannot be decomposed into simpler substances
A compound that turns different colors at different pH values
A unit used to measure temperature
Law The volume of a gas at constant pressure is directly proportional to the temperature

Down

mass The mass of one mole of particles
A system of two or more distinct chemical substances
A substance that slows down a chemical reaction
A change in which one or more chemical elements or compounds form new compounds
The amount of matter in an object
substance containing an OH group attached to a hydrocarbon group
A homogeneous mixture of a liquid with a gas or solid

15 Clues: The amount of matter in an object • A unit used to measure temperature • mass The mass of one mole of particles • A measurement of the randomness in a system • A substance that slows down a chemical reaction • A system of two or more distinct chemical substances • A homogeneous mixture of a liquid with a gas or solid • ...

Crossword Puzzle 2021-09-07

Across

This reaction breaks down molecules into smaller units and release energy.
It the sum of all the biochemical reactions in an organism.
Developing new knowledge based upon old knowledge.
This is the ability to do work.
It is a reaction that changes some chemical substances into others.
Elements pertain to economic, social and political elements are essentially manmade features, which make cultural milieu.
This is done when force is applied to an object over a distance.

Down

Organized body of knowledge that is obtained by study and experimentation
Elements like plants, animals, microorganisms, and men
This is the outer mantle of the solid earth.
Stored energy that depends upon the relative position of various parts of a system.
This is the study of energy.
Where life operates.
An element which determines the variable character of the human habitat, its opportunities as well as limitations.
This is anything that takes up space and has mass. Matter, in turn, is made up of chemical substances.

15 Clues: Where life operates. • This is the study of energy. • This is the ability to do work. • This is the outer mantle of the solid earth. • Developing new knowledge based upon old knowledge. • Elements like plants, animals, microorganisms, and men • It the sum of all the biochemical reactions in an organism. • This is done when force is applied to an object over a distance. • ...

Science reaction 2023-10-15

Across

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a change of matter from one form to another without a change in chemical properties; only physical changes
a substance or molecule that is formed in a chemical reaction; the final output
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Down

a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
a change that occurs when one or more substances change into entirely new substances with different properties
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature

Science reaction 2023-10-15

Across

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a change of matter from one form to another without a change in chemical properties; only physical changes
a substance or molecule that is formed in a chemical reaction; the final output
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Down

a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
a change that occurs when one or more substances change into entirely new substances with different properties
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature

Science Vocabulary Words 2023-10-19

Science Vocabulary Words crossword puzzle

Across

a change of matter from one form to another without a change in chemical properties; only physical changes
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged
a substance or molecule that is formed in a chemical reaction; the final output
a substance or molecule that participates in a chemical reaction; the ingredients that you start with

Down

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a change that occurs when one or more substances change into entirely new substances with different properties

Chemical Reactions 2024-10-17

Across

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a substance or molecule that is formed in a chemical reaction; the final output
a change that occurs when one or more substances change into entirely new substances with different properties
a change of matter from one form to another without a change in chemical properties; only physical changes

Down

a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Chemical Reactions 2024-10-17

Across

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a substance or molecule that is formed in a chemical reaction; the final output
a change that occurs when one or more substances change into entirely new substances with different properties
a change of matter from one form to another without a change in chemical properties; only physical changes

Down

a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Science Vocab 2024-10-16

Across

The mass of an object, or collection of objects new changes, no matter how the parts are rearranged.
A substance or molecule that participates in a chemical reaction; the ingredients that you start with.
A solid formed by a change in a solution, often due to a chemical reaction or change in temperature.

Down

A change of matter from one form to another without a change in chemical properties; only physical changes.
When two or more substances combine in ways that make new substances form that have different properties from the beginning materials.
Representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product.
A change that occurs when one or more substances change into entirely new substances with different properties
A substance or molecule that is formed in a chemical reaction; the final output.

8 Clues: A substance or molecule that is formed in a chemical reaction; the final output. • The mass of an object, or collection of objects new changes, no matter how the parts are rearranged. • A solid formed by a change in a solution, often due to a chemical reaction or change in temperature. • ...

Science 2024-10-16

Across

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a change that occurs when one or more substances change into entirely new substances with different properties

Down

a substance or molecule that is formed in a chemical reaction; the final output
a change of matter from one form to another without a change in chemical properties; only physical changes
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Chemical Reaction Vocabulary Words 2024-10-16

Chemical Reaction Vocabulary Words crossword puzzle

Across

happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
a change that occurs when one or more substances change into entirely new substances with different properties
a change of matter from one form to another without a change in chemical properties; only physical changes
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a substance or molecule that is formed in a chemical reaction; the final output
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Down

a substance or molecule that participates in a chemical reaction; the ingredients that you start with
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product

Science Vocab 2025-10-16

Across

a change that occurs when one or more substances change into entirely new substances with different properties
states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged
a substance or molecule that participates in a chemical reaction; the ingredients that you start with

Down

a change of matter from one form to another without a change in chemical properties; only physical changes
a substance or molecule that is formed in a chemical reaction; the final output
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials

Science Vocab 2025-10-16

Across

Change: a change of matter from one form to another without a change in chemical properties; only physical changes
a representation of a chemical reaction using symbols of the elements to indicate the amount of substance of each reactant and product
a solid formed by a change in a solution, often due to a chemical reaction or change in temperature
a substance or molecule that participates in a chemical reaction; the ingredients that you start with
a change that occurs when one or more substances change into entirely new substances with different properties

Down

a substance or molecule that is formed in a chemical reaction; the final output
happens when two or more substances combine in ways that make new substances form that have different properties from the beginning materials
of Mass: states that the mass of an object, or collection of objects new changes, no matter how the parts are rearranged

Chemistry 2nd semester Final Vocabulary 2025-05-21

Chemistry 2nd semester Final Vocabulary crossword puzzle

Across

Solution that contains more hydroxide ions than hydrogen ions.
Base that dissociates entirely into metal ions.
Reactant leftover when a reaction stops.
Acid that produces fewer ions.
Solution that resist changes in pH when limited amounts of acid or base are added.
Negative logarithm of the hydrogen ion concentration.
Acid that produces the maximum number of ions.
Standard solution.
Study of quantitative relationships between the amounts of reactants used and amounts of products formed by a chemical reaction.
An ionic compound made up of a cation from a base and an anion from an acid.
Method for determining the concentration of a solution by reacting a known volume of that solution with a solution of a base of known concentration.
Base that ionizes only partially in dilute solutions.
Reactant that limits the extent of the reaction.

Down

Value of the equilibrium constant expression for the self-ionization of water. 1 x 10-14.
Point at which moles of hydrogen ion from the acid equal moles of hydroxide ion from the base.
Substances that can act as both acids and bases.
Negative logarithm of the hydroxide ion concentration.
Ratio between the number of moles of any two of the substances in a balanced chemical equation.
Solution that contains more hydrogen ions than hydroxide ions.

19 Clues: Standard solution. • Acid that produces fewer ions. • Reactant leftover when a reaction stops. • Acid that produces the maximum number of ions. • Base that dissociates entirely into metal ions. • Substances that can act as both acids and bases. • Reactant that limits the extent of the reaction. • Negative logarithm of the hydrogen ion concentration. • ...

"hard" spelling crossword 2021-10-05

"hard" spelling crossword crossword puzzle

Across

an elementary particle that is identical with the nucleus of the hydrogen atom
relationship
each of more than one hundred substances
always late or never shows up
arrogant
in definite proportions joined by chemical bonds into a molecule
a jealous desirable

Down

self-punishment
a short half-laugh
a person who studies birds
squirming
a very small particle that has a negative charge of electricity and travels around the nucleus of an atom
a particle of matter that uniquely defines a chemical element
quite a harsh laugh/expressing contempt
group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
a membrane-bound organelle that contains the cell's chromosomes

16 Clues: arrogant • squirming • relationship • self-punishment • a short half-laugh • a jealous desirable • a person who studies birds • always late or never shows up • quite a harsh laugh/expressing contempt • each of more than one hundred substances • a particle of matter that uniquely defines a chemical element • a membrane-bound organelle that contains the cell's chromosomes • ...

Biology Unit 2 2019-09-03

Across

The specific region of an enzyme where a chemical reaction occurs.
Molecules that are long chains of lipid-carboxylic acid found in fats and oils.
The most basic form of carbs.
A substance that speeds up a chemical reaction.
Any of various complex organic acids that are composed of nucleotide chains.
The electromagnetic attraction between polar molecules in which hydrogen is bound to a larger atom.
The basic structural units of nucleic acids with a nitrogen-containing base, a five-carbon sugar, and a phosphate group.
The tendency of dissimilar particles or surfaces to cling to one another.

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The tendency of similar or identical particles/surfaces to cling to one another.
A substance that has amino acids, compounds and carbon, hydrogen, oxygen, nitrogen and sometimes sulfur and is found in many foods.
The least possible amount of energy which is required to start a reaction.
A small molecule that reacts with a similar molecule to form a larger molecule.
The building blocks of proteins.
Protein molecules in cells which work as biological catalysts. they speed up chemical reactions in the body, but do not get used up in the process.
Sugars, starches and fibers found in fruits, grains, vegetables, and dairy products.
A type of organic molecule found in living things. They are long chains of carbon and hydrogen molecules.

16 Clues: The most basic form of carbs. • The building blocks of proteins. • A substance that speeds up a chemical reaction. • The specific region of an enzyme where a chemical reaction occurs. • The tendency of dissimilar particles or surfaces to cling to one another. • The least possible amount of energy which is required to start a reaction. • ...

Biology Unit 2 2019-09-03

Across

A small molecule that reacts with a similar molecule to form a larger molecule.
The basic structural units of nucleic acids with a nitrogen-containing base, a five-carbon sugar, and a phosphate group.
The least possible amount of energy which is required to start a reaction.
Molecules that are long chains of lipid-carboxylic acid found in fats and oils.
Any of various complex organic acids that are composed of nucleotide chains.
The electromagnetic attraction between polar molecules in which hydrogen is bound to a larger atom.

Down

A substance that has amino acids, compounds and carbon, hydrogen, oxygen, nitrogen and sometimes sulfur and is found in many foods.
A substance that speeds up a chemical reaction.
Sugars, starches and fibers found in fruits, grains, vegetables, and dairy products.
The specific region of an enzyme where a chemical reaction occurs.
The most basic form of carbs.
A type of organic molecule found in living things. They are long chains of carbon and hydrogen molecules.
The building blocks of proteins.
The tendency of dissimilar particles or surfaces to cling to one another.
The tendency of similar or identical particles/surfaces to cling to one another.
Protein molecules in cells which work as biological catalysts. they speed up chemical reactions in the body, but do not get used up in the process.

Chemical reactions 2020-07-08

Across

The reaction of metals with air and water in the atmosphere
A reaction that takes in heat energy
A reaction that involves the addition of oxygen
A reaction that gives out heat energy
The reaction when a substance burns in the air

Down

A reaction that involves a compound being broken down by heat
A reaction when a more reactive metal displaces a less reactive metal from a solution
The reaction between an acid and an alkali to make a salt
In a chemical reaction, all particles at the start in the reactants are there at the end, rearranged in the products
The reaction that takes place in every living cell, releasing energy

10 Clues: A reaction that takes in heat energy • A reaction that gives out heat energy • The reaction when a substance burns in the air • A reaction that involves the addition of oxygen • The reaction between an acid and an alkali to make a salt • The reaction of metals with air and water in the atmosphere • A reaction that involves a compound being broken down by heat • ...

Stoichiometry 2022-11-29

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tells you by mass what percent of each element is present in a compound
a chemical formula showing the simplest ratio of elements in a compound rather than the total number of atoms in the molecule
a compound, typically a crystalline one, in which water molecules are chemically bound to another compound or an element.
the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers.
the unit of amount of substance in the International System of Units
a process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
the chemical formula of an ionic compound that lists the ions in the lowest ratio that equals a neutral electrical charge

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the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023.
an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products
an arithmetical multiplier for converting a quantity expressed in one set of units into an equivalent expressed in another.
a sample of matter with both definite and constant composition and distinct chemical properties
a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
the mass of a sample of that compound divided by the amount of substance which is the number of moles in that sample

13 Clues: the unit of amount of substance in the International System of Units • tells you by mass what percent of each element is present in a compound • the number of atoms or molecules in one mole of a substance, equal to 6.023 × 1023. • a sample of matter with both definite and constant composition and distinct chemical properties • ...

General Biology 2023-01-23

Across

chemical process by which molecules such as glucose are broken down anaerobically.
the main source of energy for cells and an important part of aerobic respiration.
Extremely energetic electrons that are liberated from the inner nucleus.
component of the air.
a reaction that releases free energy in the process of the reaction.
is a reaction that requires free energy to proceed.
energylike property or state function of a system in thermodynamic equilibrium.
the most common mechanism of regulating protein function and transmitting signals throughout the cell.
the water-based solution which found inside of cells
A substance present in all living cells that provides energy for many metabolic processes and is involved in making RNA.
the type of respiration through which cells can break down sugars to generate energy in the absence of oxygen
the process by which the body utilizes the energy released by catabolism to synthesize complex molecules.
a simple monocarboxylic acid containing two carbons
A chemical process in which oxygen is used to make energy from carbohydrates.
a chemical reaction of the interaction of chemicals with water, leading to the decomposition of both the substance and water.
A nucleoside phosphate compromised of a ribonucleoside and two phosphate
a reaction that yields ATP through the catabolism of ketone bodies
The primary phosphate group on the ATP molecules that is hydrolyzed when the
a series of reactions that extract energy from glucose by splitting it into two three-carbon molecules called pyruvates.
the act of bringing or coming together
Triglycerides are a type of fat (lipid) found in your blood.
An important mechanism by which cells can respond to their environment and

Down

an organic acid that probably occurs in all living cells.
, A chemical compound that is used to make one of the building blocks of DNA and RNA.
the main source of energy for cells and an important part of aerobic respiration.
A colorless, odorless reactive gas, the chemical element of atomic number 8 and the
is needed to drive anabolic reactions.
the movement of ions across a semipermeable membrane bound structure, down their electrochemical gradient.
the stored form of glucose that's made up of many connected glucose molecules.
a metabolite derived from glucose, fatty acid, and amino acid catabolism.
cues
a bacterial a process that takes place during the production of numerous food products.
a substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits
the part of the metabolic process that breaks down large, complicated molecules into smaller ones in order to produce energy.
provide structure and function for all living things, from microorganisms to humans.
atoms or small molecules that bond together to form more complex structures such as polymers.
the process of breathing in oxygen and breathing out carbon dioxide.
The phosphate group is closest to the ribose sugar.
a type of sugar normally made in the body from glucose.
the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
the ability of a cell to receive, process, and transmit signals with its environment and with itself.
proteins that help speed up metabolism, or the chemical reactions in our bodies.
the main type of sugar in the blood and is the major source of energy for the body's cells.

43 Clues: cues • component of the air. • is needed to drive anabolic reactions. • the act of bringing or coming together • is a reaction that requires free energy to proceed. • The phosphate group is closest to the ribose sugar. • a simple monocarboxylic acid containing two carbons • the water-based solution which found inside of cells • ...

General Biology 2023-01-23

Across

Energy like property or state function of a system in thermodynamic equilibrium.
a simple monocarboxylic acid containing two carbons
The main source of energy for cells and an important part of aerobic respiration.
The primary phosphate group on the ATP molecules that is hydrolyzed when the
A substance present in all living cells that provides energy for many metabolic processes and is involved in making RNA.
Proteins that help speed up metabolism, or the chemical reactions in our bodies.
the movement of ions across a semipermeable membrane bound structure, down their electrochemical gradient.
The process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
provide structure and function for all living things, from microorganisms to humans.
The phosphate group is closest to the ribose sugar.
The most common mechanism of regulating protein function and transmitting signals throughout the cell.
the part of the metabolic process that breaks down large, complicated molecules into smaller ones in order to produce energy.
An important mechanism by which cells can respond to their environment
The act of bringing or coming together
A nucleoside phosphate compromised of a ribonucleoside and two phosphate
the type of respiration through which cells can break down sugars to generate energy in the absence of oxygen
A chemical process in which oxygen is used to make energy from carbohydrates.
The stored form of glucose that's made up of many connected glucose molecules.
Chemical process by which molecules such as glucose are broken down anaerobically.

Down

A colorless, odorless reactive gas, the chemical element of atomic number 8 and the life-supporting component of the air.
A chemical reaction of the interaction of chemicals with water leading to the decomposition of both the substance and water.
The main type of sugar in the blood and is the major source of energy for the body's cells.
the process by which the body utilizes the energy released by catabolism to synthesize complex molecules.
Are a type of fat (lipid) found in your blood.
Extremely energetic electrons that are liberated from the inner nucleus.
the water-based solution which found inside of cells
The main source of energy for cells and an important part of aerobic respiration.
A reaction that releases free energy in the process of the reaction.
a metabolite derived from glucose, fatty acid, and amino acid catabolism.
is needed to drive anabolic reactions.
Atoms or small molecules that bond together to form more complex structures such as polymers.
A bacterial a process that takes place during the production of numerous food products.
A series of reactions that extract energy from glucose by splitting it into two three-carbon molecules called pyruvates.
A reaction that yields ATP through the catabolism of ketone bodies
A type of sugar normally made in the body from glucose.
A substance or material consisting of very large molecules called macromolecules, composed of many repeating subunits
An organic acid that probably occurs in all living cells.
The process of breathing in oxygen and breathing out carbon dioxide.
A chemical compound that is used to make one of the building blocks of DNA and RNA.
Is a reaction that requires free energy to proceed.
The ability of a cell to receive, process, and transmit signals with its environment and with itself.

41 Clues: is needed to drive anabolic reactions. • The act of bringing or coming together • Are a type of fat (lipid) found in your blood. • a simple monocarboxylic acid containing two carbons • The phosphate group is closest to the ribose sugar. • Is a reaction that requires free energy to proceed. • the water-based solution which found inside of cells • ...

Chemistry Crossword Puzzles 2022-03-08

Chemistry Crossword Puzzles crossword puzzle

Across

a chemical formula showing the simplest ratio of elements in a compound rather than the total number of atoms in the molecule.
a number placed in front of a chemical symbol or formula.
6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others.
the ratio between the amounts in moles of any two compounds involved in a chemical reaction.

Down

a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative.
consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule.
maximum amount of product that can be formed in a chemical reaction based on the amount of limiting reactant.
the actual yield divided by the theoretical yield times 100.

8 Clues: a number placed in front of a chemical symbol or formula. • the actual yield divided by the theoretical yield times 100. • 6.02214076 × 1023 of some chemical unit, be it atoms, molecules, ions, or others. • the ratio between the amounts in moles of any two compounds involved in a chemical reaction. • ...

Year 8 Chemistry Revision 2013-08-23

Year 8 Chemistry Revision crossword puzzle

Across

remains of plants or animals sometimes seen in sedimentary rocks (7)
can be hammered/bent into different shapes (9)
changes colour in acid and alkali solutions (9,9)
a word that describes what is made in a chemical reaction (8)
type of rock formed from cooled magma (7)
solution used to test for carbon dioxide gas (9)
the breakdown of rock into smaller pieces (10)
gas needed for a fuel to burn
what is formed when two or more different atoms bond together (8)

Down

when a lit splint is put into this gas a popping sound is heard (8)
type of rock formed by heating or compressing other rocks (10)
acid found in the stomach (12)
a reaction where a more reactive substance substitutes a less reactive substance from solution (12)
a poisonous gas formed by a car engine (6,8)
a blue substance containing copper, sulfur and oxygen (6,7)
a reaction between an acid and an alkali (14)
a substance made up of one type of atom (7)
a reaction where you burn a fuel (10)
the reaction of a metal with oxygen in the air (9)

19 Clues: gas needed for a fuel to burn • acid found in the stomach (12) • a reaction where you burn a fuel (10) • type of rock formed from cooled magma (7) • a substance made up of one type of atom (7) • a poisonous gas formed by a car engine (6,8) • a reaction between an acid and an alkali (14) • can be hammered/bent into different shapes (9) • ...

Biochemistry Crossword Puzzle 2015-08-30

Biochemistry Crossword Puzzle crossword puzzle

Across

a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
incapable of being dissolved
a sugar present in milk. It is a disaccharide containing glucose and galactose units.
a large molecule, or macromolecule, composed of many repeated subunits
a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.
a lipid containing a phosphate group in its molecule,
the chemical breakdown of a compound due to reaction with water.
A simple Sugar
They contain hydrogen and oxygen in the same ratio as water (2:1) and typically can be broken down to release energy
At least one double bonded carbon
a compound of the sterol type found in most body tissues
a hexose sugar found especially in honey and fruit.
a fat in which the carbon atoms are fully hydrogenated
Makes you stronger
Found in amino acids containing carbon
of, relating to, or derived from living matter

Down

a simple sugar that is an important energy source in living organisms and is a component of many carbohydrates.
It is a polysaccharide consisting of chains of glucose monomers.
A polysaccharide
Many Sugars
A simple organic compound containing both a carboxyl and an amino group
take away or alter the natural qualities of
Two monosaccharides
To remove water from
a compound consisting of two or more amino acids linked in a chain
a carboxylic acid consisting of a hydrocarbon chain and a terminal carboxyl group, especially any of those occurring as esters in fats and oils.
A polysaccharide
a molecule that can be bonded to other identical molecules to form a polymer.
a simple polyol compound
Found on amino acids

30 Clues: Many Sugars • A simple Sugar • A polysaccharide • A polysaccharide • Makes you stronger • Two monosaccharides • To remove water from • Found on amino acids • a simple polyol compound • incapable of being dissolved • At least one double bonded carbon • Found in amino acids containing carbon • take away or alter the natural qualities of • of, relating to, or derived from living matter • ...

Bio Review Chpt. 2 2023-09-07

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Stored chemical energy that holds two atoms together
Compound Atoms bonded together through sharing valence electrons
The immaterial stuff that gets things done
Allows a specific chemical reaction to happen with far less initial energy
Pure substances, made up of only one kind of atom
The molecule that docks at an Enzyme
We begin a chemical reaction with a...
The attraction of water molecules to each other
Docks in an Enzyme's active port and blocks substrates
Matter tends to spread out
Made of Carbons, Hydrogens, and Oxygens. EG: Sugars
Acid A 4-petal molecule with a Carbon base. Make up proteins.
The smallest part of a covalent compound
We end a chemical reaction with a...
Pure substance made of two or more elements, chemically combined
A change in which the matter's identity is completely transformed
One substance is broken into smaller pieces by another substance
Forms Hydrogen atoms when dissolved in water
Extremely specialized, organic catalysts
Compound Atoms bonded together through electrical charge

Down

The end result of an Enzyme-Substrate reaction
A nitrogen, a sugar, and a phosphate. Form Nucleic Acids, which are important for DNA
The average speed at which particles are moving
The basic building blocks of matter
The attraction between water molecules and other molecules
Carbon, covalently bonded to other elements
Energy disperses into the world, and at least some part is forever lost
Forms Hydroxide atoms when dissolved in water
The physical stuff that makes up the universe
The molecule has areas of positive and of negative charge
A three-Carbon base, with Hydrogen. Are nonpolar. EG: Oils
A change in which the matter's identity doesn't change

32 Clues: Matter tends to spread out • The basic building blocks of matter • The molecule that docks at an Enzyme • We end a chemical reaction with a... • We begin a chemical reaction with a... • The smallest part of a covalent compound • Extremely specialized, organic catalysts • The immaterial stuff that gets things done • Carbon, covalently bonded to other elements • ...

Matter and Energy 2025-01-31

Across

A set of interacting parts forming a complex whole
A group of atoms joined together
Matter that makes up the living and dead organisms in an ecosystem
All the living and nonliving things interacting in a particular area
The chemical reaction between oxygen and glucose that releases energy into cells
A type of energy storage molecule
Matter that makes up the nonliving parts of an ecosystem
Living things, such as plants, animals, and bacteria
An ending substance that is made during a chemical reaction
Something that is required for a process
A type of energy storage molecule made of many glucose molecules connected together
An organism that can make its own energy storage molecules
The part of a cell where photosynthesis happens
An organism that gets energy storage molecules by breaking down dead matter

Down

A molecule that organisms can use to release the energy they need to survive
To link two or more things
The tiny pieces that all matter is made of
A type of atom that makes up the living and dead organisms in an ecosystem
A starting substance that is part of a chemical reaction
An organism that needs to eat in order to get energy storage molecules
The ability to make things move or change
A molecule made of carbon and oxygen atoms
The process by which plants and other producers use energy from sunlight to change carbon dioxide and water into oxygen and glucose
An ecosystem experiment in the 90's
A type of energy storage molecule
A molecule that organisms can use to release energy, made of carbon, hydrogen, and oxygen
The part of a cell where cellular respiration happens
Something that results from a process

28 Clues: To link two or more things • A group of atoms joined together • A type of energy storage molecule • A type of energy storage molecule • An ecosystem experiment in the 90's • Something that results from a process • Something that is required for a process • The ability to make things move or change • The tiny pieces that all matter is made of • ...

Matter 2025-06-15

Across

- The table that lists all known elements.
- What happens to particles when cooled.
- Two or more substances not chemically bonded.
- Change from liquid to gas.
- Starting substance in a chemical reaction.
- Method used to separate solids from liquids.
- Change where no new substance is made.
- Change from solid directly to gas.
- New substance made in a chemical reaction.
- Process where substances change into new substances.
- Change where a new substance is made.
- State of matter that takes the shape of its container but has fixed volume.
- Substance that dissolves in a solvent.
- State of matter that fills any container completely.
- Anything that takes up space and has mass.
- Movement of particles from high to low concentration.

Down

- Mixture where the solute dissolves completely in the solvent.
- Tiny pieces that make up all matter.
- Change from gas to liquid.
- Rain, snow, hail or sleet falling from clouds.
- Substance that does the dissolving in a solution.
- Two or more elements chemically bonded.
- Method used to separate liquids with different boiling points.
- Water that flows over land back into rivers or oceans.
- Natural process where water changes state and moves through the environment.
- Force produced by particles colliding with container walls.
- Smallest unit of an element.
- State of matter with fixed shape and volume.
- What happens to particles when heated.
- Device that uses expansion of metals to control temperature.
- Another word that completes 'Periodic ______'.
- Substance made of only one type of atom.
- Change from liquid to solid.
- Change from solid to liquid.

34 Clues: - Change from gas to liquid. • - Change from liquid to gas. • - Smallest unit of an element. • - Change from liquid to solid. • - Change from solid to liquid. • - Change from solid directly to gas. • - Tiny pieces that make up all matter. • - Change where a new substance is made. • - What happens to particles when cooled. • - Change where no new substance is made. • ...

Chemistry Review 2019-11-04

Across

Installed on smokestacks to prevent harmful products from entering the environment
A metal (usually iron) rusts or is oxidized
2 words Examples are coal, oil, natural gas and gasoline
Type of reaction where an acid and a base combine
Substance containing hydrogen in solution with a pH less than 7

Down

Chemical in the air that causes harm to living things or the environment
Process of applying a zinc coating to protect iron or steel
Substance usually containing hydroxide with a pH greater than 7
Compounds produced in a chemical reaction
2 words Gas that traps heat in Earth's atmosphere preventing heat from escaping into space
Type of reaction where carbon dioxide and water are produced
2 words One of the key greenhouse gases that scientists are most concerned with

Chemistry Review 2019-11-04

Across

Compounds produced in a chemical reaction
2 words Gas that traps heat in Earth's atmosphere preventing heat from escaping into space
Chemical in the air that causes harm to living things or the environment
Process of applying a zinc coating to protect iron or steel
Type of reaction where carbon dioxide and water are produced
Installed on smokestacks to prevent harmful products from entering the environment

Down

Substance containing hydrogen in solution with a pH less than 7
A metal (usually iron) rusts or is oxidized
Substance usually containing hydroxide with a pH greater than 7
Type of reaction where an acid and a base combine
2 words One of the key greenhouse gases that scientists are most concerned with
2 words Examples are coal, oil, natural gas and gasoline

Chemistry Balance Crossword 2022-10-05

Chemistry Balance Crossword crossword puzzle

Across

No atoms can be made or created.
Stuff.
The rearrangement of molecules.
No atoms lost/added in equation.

Down

Before a chemical equation.
Signifies a chemical reaction.
Atoms lost/added in equation.
After a chemical equation.
A branch of science.
Doesn't change when shape/form changes.

10 Clues: Stuff. • A branch of science. • After a chemical equation. • Before a chemical equation. • Atoms lost/added in equation. • Signifies a chemical reaction. • The rearrangement of molecules. • No atoms can be made or created. • No atoms lost/added in equation. • Doesn't change when shape/form changes.

Chemistry Balance Crossword 2022-10-05

Across

No atoms can be made or created.
Stuff.
The rearrangement of molecules.
No atoms lost/added in equation.

Down

Before a chemical equation.
Signifies a chemical reaction.
Atoms lost/added in equation.
After a chemical equation.
A branch of science.
Doesn't change when shape/form changes.

Enzymes - IGCSE 2018-02-27

Across

An enzyme capable of digesting proteins into amino acids
3 words. Model of enzyme activity that explains how a particular enzyme will only fit with one particular type of substrate.
2 words. The part of an enzyme or antibody where the chemical reaction occurs.
The movement energy that substrates and enzymes have
A substance produced in a chemical reaction
A factor that can decrease enzyme activity away from its optimum by affecting the shape of the active site. E.g. acids or alkalis
A biological catalyst made from protein that speeds up chemical reactions without being used up
catalyzes the decomposition of hydrogen peroxide to water and oxygen
An enzyme secreted in the digestive tract that catalyzes the breakdown of fats into individual fatty acids and glycerol that can be absorbed into the bloodstream

Down

An enzyme that is secreted by the salivary glands and by the pancreas to break carbohydrates down into sugars
Only one enzyme catalyses one reaction with one type of substrate, so enzymes are highly __________________.
the molecule(s) that fits into the enzyme active site and is either broken down or combined
the process when an enzyme loses its activity due to a change in the shape of its active site so that it cannot bind to the substrate
When an enzyme active site hits a substrate molecule
A factor that increases enzyme activity up to an optimum, due to more energy for collisions. Beyond optimum it denatures enzymes.
Denaturation changes the _____________ of the active site
When the enzyme active site and substrate attract together, they _________________
Collisions between enzyme active site and substrate are called this when they lead to the formation of product
a substance that speeds up the rate of chemical reactions (by lowering activation energy) without being used up itself

19 Clues: A substance produced in a chemical reaction • When an enzyme active site hits a substrate molecule • The movement energy that substrates and enzymes have • An enzyme capable of digesting proteins into amino acids • Denaturation changes the _____________ of the active site • catalyzes the decomposition of hydrogen peroxide to water and oxygen • ...

A Solubility Crossword 2015-12-07

Across

made up of at least two substances and form a stable mixture
chemical batteries, has certain corrosion resistance
still dissolve more solvent
solution contains the amount of solute
the action of energy, the process of atoms and molecules to form ions
have gained electrons and have a negative charge
quality that a solid substance can saturated in a certain solvent
for chemical B
is generated when the insoluble in reactant substance in solution
A dissolves in chemical B

Down

to the unit volume solution solute contained in the amount of substance of B
or molecules in the solvent release process of ions
for chemical A
ability of conduction current
or gained one or more electronic to the outermost electron
of outer electrons to achieve relatively stable structure of the ionic form.
up of atoms

17 Clues: up of atoms • for chemical A • for chemical B • A dissolves in chemical B • still dissolve more solvent • ability of conduction current • solution contains the amount of solute • have gained electrons and have a negative charge • or molecules in the solvent release process of ions • chemical batteries, has certain corrosion resistance • ...

Science:) Property and changes 2024-11-20

Science:) Property and changes crossword puzzle

Across

A Characteristic that can be observed as it changes to a different type of matter
the energy released when atoms form bonds.
the amount of matter in an object
happens when substances react with one and other changing It to a new substance
more energy is required to break the bonds of the reactants than isreleased when products form.
more energy is released when the products form than is required tobreak the bonds in the reactants.
a substance produced by a chemical reaction.

Down

a process in which atoms of one or more substances rearrange to form one or more new substances.
States the total moss of the reactants before a chemical ration
the amount of space a substance takes up
law that states that energy is always transferring, but energy is notcreated or destroyed.
a starting substance in a chemical reaction.
change of materials into another, new materials with different properties and one or more than one new substances are formed.
A characteristic of matter that can be measured without change of identity
a number placed in front of an element symbol or chemical formulain an equation.
Happens when substances react with oxidizing agents, changing to a new substance
the ability of a type of matter to burn easily
the mass per unit volume of a substance

18 Clues: the amount of matter in an object • the mass per unit volume of a substance • the amount of space a substance takes up • the energy released when atoms form bonds. • a starting substance in a chemical reaction. • a substance produced by a chemical reaction. • the ability of a type of matter to burn easily • ...

Chemical Reactions 2025-2026 2025-10-27

Chemical Reactions 2025-2026 crossword puzzle

Across

the original substances you start with before that chemical reaction occurs
a property of substance determined by the number, type, and arrangement of atoms that make up that substance
a thing that is composed of two or more separate elements that have been chemically combined
the new substances that are produced from a chemical reaction
a series of operations that involves changing one or more chemicals or chemical compounds through chemical reactions
substances that are made up of only one kind of particle and have a fixed or constant structure
holds molecules together
a substance that can't be broken down

Down

a combination of two or more substances that are not uniformly distributed, meaning its composition varies throught.
when matter changes from one state to another, new types of particles are created, no new substance is produced
when new substances are produced from one or more molecules of the old substances
a substance or mixture where the components are uniformly distributed throughout, resulting in a composition that is the same no matter where you take a sample
are substances that are formed by physically mixing two or more substances
harmful materials, part of acid rain
a homogeneous mixture composed of two or more substances
any form of precipitation that is unusually acidic
substance that is dissolved in a solution
substance in which other materials dissolve to form a solution

18 Clues: holds molecules together • harmful materials, part of acid rain • a substance that can't be broken down • substance that is dissolved in a solution • any form of precipitation that is unusually acidic • a homogeneous mixture composed of two or more substances • the new substances that are produced from a chemical reaction • ...

English Quiz 2020-04-20

Across

a shrewd manner
with prolonged noises;of dogs
to the structure or movement of the earth's crust
substance that is formed as the result of a chemical reaction
of several international socialist organizations
produced by or used in a reaction involving changes in atoms or molecules
a part of a structure having some specific characteristic or function
idea,concept or belief
the atoms of the reactants to create different substances
or add together; "combine resources"

Down

and vibration at the surface of the earth resulting from underground movement from volcanic activity
person who writes plays.
metal cap or band placed on a wooden pole to prevent splitting
the successful ending of the american independence
or characterized by error
style at the expense of thought
or severe weather

17 Clues: a shrewd manner • or severe weather • idea,concept or belief • person who writes plays. • or characterized by error • with prolonged noises;of dogs • style at the expense of thought • or add together; "combine resources" • of several international socialist organizations • to the structure or movement of the earth's crust • the successful ending of the american independence • ...

English Quiz 2020-04-20

Across

a shrewd manner
with prolonged noises;of dogs
to the structure or movement of the earth's crust
substance that is formed as the result of a chemical reaction
of several international socialist organizations
produced by or used in a reaction involving changes in atoms or molecules
a part of a structure having some specific characteristic or function
idea,concept or belief
the atoms of the reactants to create different substances
or add together; "combine resources"

Down

and vibration at the surface of the earth resulting from underground movement from volcanic activity
person who writes plays.
metal cap or band placed on a wooden pole to prevent splitting
the successful ending of the american independence
or characterized by error
style at the expense of thought
or severe weather

End of Mocks Year 10 Crossword 2018-06-29

End of Mocks Year 10 Crossword crossword puzzle

Across

the sub-atomic particle that is positive
the part of the cell that contains genetic material
the equipment that we use to mesuare current in a circuit
a microorganism that causes disease
the part of the cell that releases energy, respiration happens here
the chemical reaction that releases energy and happens in mitochondria
a disease that you can catch
energy resources that will can be used over and over again
the movement of particles from an area of high concentration to an area of low concentration
one type of atom only, they are listed on the periodic table
the units of resistance

Down

the rate of flow of charge around a circuit
two of more elements chemically bonded together
the chemical reaction that plants use to make food using energy from the sun
the energy associated with movement
a push or a pull
a sub-atomic particle with no charge

17 Clues: a push or a pull • the units of resistance • a disease that you can catch • a microorganism that causes disease • the energy associated with movement • a sub-atomic particle with no charge • the sub-atomic particle that is positive • the rate of flow of charge around a circuit • two of more elements chemically bonded together • ...

Unit 1 Vocab 3 2022-10-21

Across

energy stored in bonds of chemical
the smallest part of a substance that still has all of the physical and chemical properties
a reaction that releases free energy
feels like a cussion and is the top of water
regulates temperature of the environment and planet
allows for reaction rates to occur without denaturation
stored energy that the relative position or various parts of a system
the energy of motion and potential energy it stores
it requires energy to be driven

Down

when people sweat the water is evaporating and cooling the body
water dissolves other molecules
the act of combining
when water sticks to itself
energy that a body passes while in motion
substance containing atoms and ions or more elements that are chemically bonded
an extremely strong bond between molecules with a hydrogen atom
determines the acidity and base of a substance

17 Clues: the act of combining • when water sticks to itself • water dissolves other molecules • it requires energy to be driven • energy stored in bonds of chemical • a reaction that releases free energy • energy that a body passes while in motion • feels like a cussion and is the top of water • determines the acidity and base of a substance • ...

Covalent and Ionic Bonds Review 2023-04-27

Covalent and Ionic Bonds Review crossword puzzle

Across

This type of bond involves sharing electrons
A charged atom
This element only needs two valence electrons to satisfy the octet rule
This rule says that all atoms want a full valence shell
If there is no subscript next to an element in a chemical formula, there is/are ___ atom/s of that element
The chemicals that go IN to a chemical reaction; on the left side of the arrow
The strongest type of covalent bond
The method to figure out the ratio of atoms in an ionic compound

Down

A model for atoms and molecules that shows only valence electrons
The outermost electron shell on an atom
A covalent bond that involves two pairs of electrons
The chemicals that come OUT of a chemical reaction; on the right side of the arrow
The number of valence electrons that most main-group elements want to have
The number of Oxygen atoms in Ca3(PO4)2
This type of bond involves the transfer of electrons from one atom to another
The name of the compound CaO

16 Clues: A charged atom • The name of the compound CaO • The strongest type of covalent bond • The outermost electron shell on an atom • The number of Oxygen atoms in Ca3(PO4)2 • This type of bond involves sharing electrons • A covalent bond that involves two pairs of electrons • This rule says that all atoms want a full valence shell • ...

Science Crossword Puzzle 2024-09-03

Science Crossword Puzzle crossword puzzle

Across

reactions in which precipitate is formed
the process in which the energy gets released.
the process in which both plants and animals obtain food and use it to get energy.
also called diverging mirror.
the chemical process by which different kinds of chemical reactions get involved to control the living state of the cells of that organism.
those reactions in which oxygen addition takes takes and removal of hydrogen takes place
reaction in which new substances with new properties are formed.
those reactions in which removal of oxygen and addition of hydrogen takes place.
a form of energy that enables us to see things

Down

lens having both the type of lenses.
the process in which the exchange of gases takes place
When chemical reaction is denoted in the forms of symbols is called ________ _________.
also called converging mirror.
The surface which can reflect the light is a _____.
the process in which the energy gets stored for future requirements.

15 Clues: also called diverging mirror. • also called converging mirror. • lens having both the type of lenses. • reactions in which precipitate is formed • the process in which the energy gets released. • a form of energy that enables us to see things • The surface which can reflect the light is a _____. • the process in which the exchange of gases takes place • ...

Reaction Types 2014-05-19

Across

REDUCTION REACTION/Any chemical change in which one species is oxidized(loses electrons)and another species(gains electrons); also called redox reaction.
organic group that has one or more electrons available for bonding.
process in which an electric current is used to produce a chemical reaction, such as the decomposition of water.

Down

REACTION/The oxidation reaction of an organic compound, in which heat is released.
DISPLACEMENT REACTION/A reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds.
REACTION/A reaction in which a single compound brakes down to form two or more simpler substances.
REACTION/A reaction in which two or more substances combine to form a new compound.
DISPLACEMENT REACTION/A reaction in which one element or radical takes the place of another element or radical in a compound.

8 Clues: organic group that has one or more electrons available for bonding. • REACTION/The oxidation reaction of an organic compound, in which heat is released. • REACTION/A reaction in which two or more substances combine to form a new compound. • REACTION/A reaction in which a single compound brakes down to form two or more simpler substances. • ...

Mixtures Crossword 2020-12-01

Across

a mixture that has different parts, not evenly mixed.
a small number placed after an element that shows how many atoms are in the molecule.
a substance that takes part in and undergoes change during a reaction.
when the solute breaks up from a larger crystal of molecules into much smaller groups or individual molecules.
a liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
a reaction that occurs when heat is released by the system into the surroundings.
a reaction that occurs when heat is absorbed by the system from the surroundings.
the minor component in a solution, dissolved in the solvent.
a number placed before the molecule in that tells you how many molecules are in the equation
the substances formed from chemical reactions.
a mixture consisting of parts that are all the same, or evenly mixed. A solution is a type of homogenous mixture.

Down

a system of chemical changes that involves the breaking and reforming of chemical bonds to create new substances.
able to dissolve other substances.
a law that states that matter is not destroyed or created, therefore the reactants will have the same mass as the products.
when particles of different substances mix together naturally.
a mixture contains different substances that are not chemically joined to each other.

16 Clues: able to dissolve other substances. • the substances formed from chemical reactions. • a mixture that has different parts, not evenly mixed. • the minor component in a solution, dissolved in the solvent. • when particles of different substances mix together naturally. • ...

Malaki, Waves, 3 2025-05-06

Across

Results in a proton and electron
Consists of 2 neutrons and one proton.
Results in a positron and neutron
The atoms involved in starting a chemical reaction
Atoms that have either lost or gained neutrons
An electron with a positive charge. Result of beta decay
The energy released from an atom during gamma decay

Down

Consists of one neutron and one proton
When two atoms form to make one
The result of a chemical reaction
Results in a particle that consists of 2 protons and neutrons
When a neutron turns U-235 into U-236

12 Clues: When two atoms form to make one • Results in a proton and electron • The result of a chemical reaction • Results in a positron and neutron • When a neutron turns U-235 into U-236 • Consists of one neutron and one proton • Consists of 2 neutrons and one proton. • Atoms that have either lost or gained neutrons • The atoms involved in starting a chemical reaction • ...

Holiday Homework 2025-06-20

Across

Solid formed in a double displacement reaction.
The bending of light around edges or through small openings.
The point where parallel rays converge in a concave mirror.
Bends when light passes from one medium to another.
Type of reaction where heat is absorbed.
Change in a substance where a new substance is formed.
Reaction in which a substance gains oxygen.
Green pigment essential for photosynthesis.

Down

Organ that filters blood in humans.
Tube that connects mouth to stomach.
Tiny vessels where exchange of gases occurs.
The number written in front of a compound in a chemical equation.
A surface or object that reflects most of the light that hits it.
Process of breaking down food to release energy.
Mirror with a curved reflecting surface.

15 Clues: Organ that filters blood in humans. • Tube that connects mouth to stomach. • Type of reaction where heat is absorbed. • Mirror with a curved reflecting surface. • Reaction in which a substance gains oxygen. • Green pigment essential for photosynthesis. • Tiny vessels where exchange of gases occurs. • Solid formed in a double displacement reaction. • ...

Science Crossword 2021-07-19

Across

the fire triangle is made of fuel heat and ------
the law that states no atoms are created or destroyed during a chemical reaction
Mg(NO3)2
something that speeds up a reaction but does not change the end result
elements found on the right of the arrow
liquid used to test for CO2
scientific word for burning
diagrams that help to show weather a reaction is exothermic or endothermic
a reaction that gives off heat to its surroundings

Down

elements on the left of the arrow
forces that hold atoms together
seven letter fuel beginning with m
what type of change is melting
element found in the air beginning with n
when a compound breaks down into simpler compounds or elements due to heat

15 Clues: Mg(NO3)2 • liquid used to test for CO2 • scientific word for burning • what type of change is melting • forces that hold atoms together • elements on the left of the arrow • seven letter fuel beginning with m • elements found on the right of the arrow • element found in the air beginning with n • the fire triangle is made of fuel heat and ------ • ...

MULTIPLE ASSISMENT (SCIENCE) 2023-07-04

MULTIPLE ASSISMENT (SCIENCE) crossword puzzle

Across

A reaction in which energy is absorbed
which movement is seen when food is going through Oesophagus
how many type of decomposition reaction are there
which energy enable us to see things around
The saliva contains which enzymes
which is the most reactive metal
which cell is responsible for the opening and closing of pore

Down

A substance which is formed during a chemical reaction
who is responsible for the transportation of water in plants
A mirror whose reflecting surfaces are spherical
what are the balloon like structures present in lungs
A reaction in which Two substance are combined to form a new substance
light travels in which lines
which mirrors are used as rear view mirror
which angle is equal to the angle of reflection

15 Clues: light travels in which lines • which is the most reactive metal • The saliva contains which enzymes • A reaction in which energy is absorbed • which mirrors are used as rear view mirror • which energy enable us to see things around • which angle is equal to the angle of reflection • A mirror whose reflecting surfaces are spherical • ...

Units 7 & 8 2022-09-11

Across

a connecting wire, usually made of copper, wrapped in plastic covering.
the flow of electricity charges through materials.
a chemical reaction that happens when objects or substances are burned.
an object which can attract other objects made of iron and other magnetic metals.
a method used to separate liquids that have different boiling points in homogeneous mixtures.
a material which allows electrical charges to move.
a device with a magnetic needle that always points north. We use it to orient ourselves.
a material which does not allow electrical charges to move.
a method used to separate substances of different density in heterogeneous mixture.
a chemical reaction that happen when some metal substances such as iron combine with oxygen in the presence of water.
a type of matter which contains two or more pure substances.

Down

the force of attraction exerted by magnets.
a chemical reaction that happens in some living things, such as yeast and bacteria.
the component of an electric circuit which provides the electricity.
a mixture in which the different components can be distinguished.
a closed path through which electricity flows.
a mixture in which the different components cannot be distinguished.
the component of an electric circuit which transform electricity into another type of energy.
these happen when atoms react and group together differently.
another word for a homogeneous mixture.
a method used to separate solids from liquids in homogenous mixture.
a type of matter which contains only one type of component.
a method used to separate solids from liquids, or solids with different size particles, in heterogeneous mixtures.

23 Clues: another word for a homogeneous mixture. • the force of attraction exerted by magnets. • a closed path through which electricity flows. • the flow of electricity charges through materials. • a material which allows electrical charges to move. • a type of matter which contains only one type of component. • a material which does not allow electrical charges to move. • ...

Environmental science 2021-09-06

Across

a compound found mainly in living things.
the energy needed to start a chemical reaction.
it is a latin word that means knowledge.
is the main element in organic compound.
ability to do work.
organized body of knowledge that is obtained by study and experimentation.
a substance that forms as a result of a chemical reaction.
the protective blanket of gases surrounding the earth.
unit work of energy in the International System of Units.
the sum of all the biochemical reactions in an organism.
Is a a substance that consist of two or more element
the concentration of hydronium ions in a solution.
comprises all types of water resources oceans, lakes, seas, rivers, streams, reservoirs,icecaps, glaciers, and groundwaters.
a substance that starts a chemical reaction.
the rate at which energy is used.

Down

developing knew knowledge based upon old knowledge.
a force that holds molecules together.
the outer mantle of the solid earth.
anything that takes up space and has mass.
type of biochemical reactions that breakdowns molecules into smaller units and release energy.
these reactions build up bigger molecules from smaller ones.
The study of the interactions between life and its physical environment.
a test that is used to rule out a hypothesis or validate something already known.
A widely accepted hypothesis that stands the test of time. Theories are oftentested and usually not rejected.
is the study of energy.
is a pure substance.
needed by all known forms of life.
where life operates.
the unit of power.
are tiny units that make up all matter in the universe and energy what holds the nucleus together.

30 Clues: the unit of power. • ability to do work. • is a pure substance. • where life operates. • is the study of energy. • the rate at which energy is used. • needed by all known forms of life. • the outer mantle of the solid earth. • a force that holds molecules together. • it is a latin word that means knowledge. • is the main element in organic compound. • ...

Chemistry Layered Curriculum Crosswrod 2016-11-26

Chemistry Layered Curriculum Crosswrod crossword puzzle

Across

The basic building block of most of the matter around us; the smallest particle of an element that has all the properties of that element
The neutrally charged subatomic particle that is located inside the nucleus of an atom
A measure of an atoms mass that is equal to the number of protons and neutrons in the elements nucleus
The substance that is formed as a result of an chemical reaction
The ability for a given substance, the solute , to dissolve into a solvent
The temperature at which a substance changes from a solid to a liquid
A pure substance that forms when two or more elements join chemically in a fixed proportion.
A change that results in the formation of a new substance or substances
The temperature at which a substance boils
Science that deals with the identification, properties, reactions, and changes of substances in matter.
A homogeneous mixture composed of two or more substances
What is formed when two or more atoms combine and join together

Down

A material system made up of two or more different substances which are mixed but not combined chemically
A positive negatively charged subatomic
Substances initially present in a chemical reaction that are consumed during the reaction to make a product
The number of protons in the nucleus of an atom
A substance that dissolves a solute
A negatively charged subatomic particle that is located outside the nucleus of an atom
Changes in a substance that affects its form but not its chemical composition
A substance dissolved into another substance, that usually is smaller in proportion, forming a solution

20 Clues: A substance that dissolves a solute • A positive negatively charged subatomic • The temperature at which a substance boils • The number of protons in the nucleus of an atom • A homogeneous mixture composed of two or more substances • What is formed when two or more atoms combine and join together • The substance that is formed as a result of an chemical reaction • ...

Matter and Energy in Ecosystems 2025-02-09

Matter and Energy in Ecosystems crossword puzzle

Across

a type of energy storage molecule.
an organism that needs to eat in order to get energy storage molecules.
a group of atoms joined together in particular way.
respiration the chemical reaction between oxygen and glucose that release energy into cells.
a type of energy storage molecule.
something that results from a process.
a set of interacting parts forming a complex whole.
matter that makes up the living and dead organisms in an ecosystem.
the tiny pieces that all matter-all the stuff in the world-is made of.
living things, such as plants, animals and bacteria.
dioxide a molecule made of carbon and oxygen atoms.
something that is required for a process.
storage molecule a molecule that organisms can use to release the energy they need to survive.

Down

the ability to make things move or change
the process by which plants and other producers use energy from sunlight to change carbon dioxide and water into oxygen and glucose.
the part of cell where photosynthesis happens.
to link two or more things.
an ending substance that is made during a chemical reaction.
an organism that gets energy storage molecules (such as glucose) by breaking down dead matter.
that part of a cell where cellular respiration happens.
a molecule that organisms can use to release energy, and that is made of carbon, hydrogen, and oxygen atoms.
a type of atom (a tiny piece) that makes up molecules such as carbon dioxide and energy storage molecules.
a closed ecosystem made by humans.
a type of energy storage molecule made of many glucose molecules connected together.
all the living and nonliving things interacting in a particular area.
a starting substance that is part of chemical reaction.
matter that makes up the nonliving parts of an ecosystem, such as air, water, and rocks.
an organim that can make its own energy storage molecules (such as glucose)

28 Clues: to link two or more things. • a type of energy storage molecule. • a closed ecosystem made by humans. • a type of energy storage molecule. • something that results from a process. • the ability to make things move or change • something that is required for a process. • the part of cell where photosynthesis happens. • a group of atoms joined together in particular way. • ...

Natural Science: vocabulary Unit 7 & 8 2024-06-27

Natural Science: vocabulary Unit 7 & 8 crossword puzzle

Across

a method used to separate solids from liquids, or solids with different size particles in heterogeneous mixtures
another word for a homogeneous mixture
the flow of electrical charges through materials
these happen when atoms react and group together differently
a method used to separate substances of different density in heterogeneous mixtures
a mixture in which the different components can be distinguished
the component of an electric circuit which provides the electricity
a method used to separate liquids that have different boiling points in homogeneous mixtures
a type of matter which contains only one type of component
a chemical reaction that happens in some living things, such as yeast and bacteria
a material which allows electrical charges to move

Down

a chemical reaction that happens when some metal substances such as iron combine with oxygen in the presence of water
a type of matter which contains two or more pure substances
a mixture in which the different components cannot be distinguished
a material which does not allow electrical charges to move
the component of an electric circuit which transforms electricity into another type of energy
a device with a magnetic needle that always points north, we use it to orient ourselves
an object which can attract other objects made of iron and other magnetic metals
a connecting wire, usually made from copper,wrapped in plastic covering
a closed path through which electricity flows
the force of attraction exerted by magnets
a method used to separate solids from liquids in homogeneous mixtures
a chemical reaction that happens when objects or substances are burned

23 Clues: another word for a homogeneous mixture • the force of attraction exerted by magnets • a closed path through which electricity flows • the flow of electrical charges through materials • a material which allows electrical charges to move • a material which does not allow electrical charges to move • a type of matter which contains only one type of component • ...

Enzymes 2022-10-24

Across

........ enzymes are produced inside of the cell
Reaction that made a large molecules from smaller molecules
All the chemical reaction of life consist of anabolic and catabolic reaction
Energy is needed to raise molecules to a transition state
Enzyme bind with specific substrate = "bind site"
Proposes that the initial interaction between enzyme and substrate is relatively weak, but that these weak interactions rapidly induce conformational changes in the enzyme that strengthen binding
effect when enzyme (protein) meet high temperature , eq: boiled egg

Down

Anabolic reaction of enzyme (Making food in plant)
Enzymes are also .......... protein
type of inhibitor that bind in the same site as the substrate
an enzyme produced by many organisms. It is located in the brush border of the small intestine of humans and other mammals (lactose)
Molecules involved and collectively from metabolism process
tools that used for measure the progress of enzyme catalysed reactions
final result from enzyme and substrate
Biological Catalyst
starting substance in an enzyme reaction

16 Clues: Biological Catalyst • Enzymes are also .......... protein • final result from enzyme and substrate • starting substance in an enzyme reaction • ........ enzymes are produced inside of the cell • Enzyme bind with specific substrate = "bind site" • Anabolic reaction of enzyme (Making food in plant) • Energy is needed to raise molecules to a transition state • ...

Lesson 4 Vocabulary Crossword 2022-10-20

Lesson 4 Vocabulary Crossword crossword puzzle

Across

Type of decomposition reaction where one of the reactants is water
Reaction in which small molecules are assembled into large molecules by removing water
Chemical substances that neutralize alkalis, dissolves metals, and turns litmus red; sour-tasting

Down

Substance in which two or more elements are combined
Small molecules that are the building blocks of proteins
Chemically organic functional group composed of a carbon atom double bonded to an oxygen atom
substances that are slippery, taste bitter, change the color of indicators
Chemical compound in which two or more atoms of carbon are covalently linked to atoms of other elements
substance produced by the reaction of an acid with a base
Chemical group, ion, or radical OH that consists of one hydrogen atom and one oxygen atom; is neutral or negatively charged

10 Clues: Substance in which two or more elements are combined • Small molecules that are the building blocks of proteins • substance produced by the reaction of an acid with a base • Type of decomposition reaction where one of the reactants is water • substances that are slippery, taste bitter, change the color of indicators • ...

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