Chapter 13- representing chemical change

Question 1

Define the term reactants

Answer 1

Substances that combine during a chemical reaction to form the product.

Question 2

Define the term products.

Answer 2

Substances that form during a chemical reaction when the reactants react with each other.

Question 3

Define the law of conservation of mass.

Answer 3

Mass cannot be created or destroyed during a chemical reaction.

(s) - solid
(g) - gas
(l) - liquid
(aq) - aqueous
(ppt) - precipitate that forms

Question 4

What information can you gain from a chemical equation?

Answer 4

• reactants and products.
• ratio of reactant molecules and product molecules.
• ratio of atoms in molecules.
• phase of substance.
• symbols/names of substances.
• can calculate mass of products and mass of reactants.