Chemical reactions and more

Front

What is a chemical reaction?

Back

A process in which atoms rearrange to form new substances.

Front

How does a chemical change differ from a physical change?

Back

In a chemical change, a new substance is formed, while in a physical change, no new substance is formed.

Front

What is mass?

Back

Measure of the amount of matter.

Front

What are reactants and products in a chemical reaction?

Back

Reactants are changed into products during a chemical reaction.

Front

How many Carbons are present on the reactant side if the equation shows 1 Carbon?

Back

1

Front

What is the definition of a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a catalyst?

Back

A substance that speeds up a chemical reaction without being consumed.

Front

What is an example of a chemical reaction?

Back

Burning wood, which produces ash, smoke, and gases.

Front

What is the role of energy in chemical reactions?

Back

Energy is required to break bonds in reactants and is released when new bonds form in products.