Chemical Reactions and Changes

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products) through the breaking and forming of chemical bonds.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, often accompanied by energy changes.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, matter is neither created nor destroyed; the mass of the reactants equals the mass of the products.

Front

What is an example of a chemical change?

Back

Baking a cake, as it involves chemical reactions that produce new substances.

Front

What happens during a chemical reaction?

Back

Atoms rearrange to form new substances, and bonds between atoms are broken and formed.

Front

What is a reactant?

Back

A substance that undergoes a chemical change in a reaction.

Front

What is a product?

Back

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

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both the reactant and product sides.

Front

What is an example of a physical change?

Back

Freezing water, as it changes state from liquid to solid without altering its chemical composition.