Chemical reactions

Front

Why is boiling not a chemical reaction?

Back

Substances change but can be changed back again.

Front

Why is photosynthesis a chemical reaction?

Back

Substances change into a new substance.

Front

Iron reacts with sulfur to form iron sulfide. The product is:

Iron

,

sulfur

,

iron sulfide

Back

iron sulfide

Front

Why is the reaction of iron with sulfur to form iron sulfide a chemical reaction?

Back

A substance changes into a new substance.

Front

What is a reactant when cooking gas burns in oxygen to form carbon dioxide and water?

Back

oxygen

Front

What is a product when cooking gas burns in oxygen?

Back

water

Front

The metal iron rusts when it is exposed to air and water. The product in the chemical reaction is iron+oxygen+water---> rust

Back

rust