Chemical Reactions Vocabulary

What is a chemical reaction?

• Method or means of changing one or more chemicals or chemical compounds

• The process by which one or more substances change to produce one or more different substances

• A substance produced during a chemical reaction

• Physical and chemical characteristics of matter used to describe or identify a substance

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What is a product?

• A substance produced during a chemical reaction

• A substance that takes part in and undergoes change during a reaction

• Natural resources that undergo a chemical process

• The smallest particle of an element

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What are properties?

• A substance that takes part in change during a reaction

• The smallest particle of an element

• Physical and chemical characteristics of matter used to describe or identify a substance

• A substance produced during a chemical reaction

Tags

NGSS.MS-PS1-2

What is a reactant?

• A substance produced during a chemical reaction

• A substance that takes part in and undergoes change during a reaction

• Natural resources that undergo a chemical process

• A new substance with unique chemical and physical properties

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NGSS.MS-PS1-2

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What does endothermic mean?

• A chemical reaction that absorbs heat from the surroundings

• A chemical reaction or process that releases heat

• A substance that increases the rate of a chemical reaction without itself being permanently changed

• A solid that is deposited from a solution

Tags

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What does exothermic mean?

• A chemical reaction that absorbs heat from the surroundings

• A chemical reaction or process that releases heat

• The process of gaining oxygen in a chemical reaction

• A chemical reaction that requires an initial source of heat

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The substances present before a chemical reaction occurs

• chemical reaction

• products

• arrow

• reactants

The substances that are formed during a chemical reaction

• arrow

• chemical reaction

• reactants

• products

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A fundamental principle of science stating that mass cannot be created or destroyed in a closed system through ordinary chemical or physical means.

• Law of Conservation of Mass

• Mass law

• scientific method

• chemical change

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The number before the chemical formula; it represents the number of molecules that are present Ex. 2H₂O₂, 2 molecules of H₂O₂

• reactant

• coefficient

• product

• subscript