Physical/Chemical Changes and Chemical Equations

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What is a physical change?

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A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include folding, cutting, or melting.

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What is a chemical change?

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A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and includes changes such as burning, rusting, or digestion.

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What are reactants in a chemical reaction?

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Reactants are the starting substances in a chemical reaction that undergo change to form products.

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What are products in a chemical reaction?

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Products are the substances that are formed as a result of a chemical reaction.

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What is an example of a physical change?

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Folding a blanket is an example of a physical change.

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What is an example of a chemical change?

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Burning wood is an example of a chemical change.

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What is flammability?

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Flammability is a chemical property that describes how easily a substance can catch fire and burn.

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What is toxicity?

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Toxicity is a chemical property that indicates how harmful a substance can be to living organisms.

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What is oxidation?

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Oxidation is a chemical property that refers to the reaction of a substance with oxygen, often resulting in rusting or combustion.

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What are clues that a chemical change has occurred?

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Clues include color changes, production of heat, production of light, and formation of gas or precipitate.