Chemical Reactions Unit Test 2024-25

Front

What are atoms?

Back

The tiny pieces that all matter is made of.

Front

What is a reactant?

Back

A starting substance that is part of a chemical reaction.

Front

What happens during a chemical reaction?

Back

All atoms rearrange from reactants into products.

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction.

Front

Which of the following is NOT a chemical property: hard, shiny, made of carbon atoms, boils at 23C?

Back

Made of carbon atoms.

Front

What does it mean if two samples have the same properties?

Back

They are the same substance.

Front

What does it mean if one sample has different properties from others?

Back

It is a different substance.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the substance's chemical composition, while a chemical change does.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.