Chemical equations

Question 1

What do chemical equations show.

Answer 1

Chemical equations show the reactants (the substances you start with) and the products (new substances made) in a reaction.

Question 2

Reactant

Answer 2

A substance we start with before a chemical reaction takes place.

Question 3

Product

Answer 3

A substance made as a result of a chemical reaction.

Question 4

Word equation

Answer 4

A way of describing what happens in a chemical reaction by showing the names of all reactants and the products they form.

Question 5

Balanced symbol equation

Answer 5

A symbol equation in which there are equal numbers of each type of atom on either side of the equation.

Question 6

Law of conservation of mass

Answer 6

The total mass of the products formed in a reaction is equal to the total mass of the reactants.

Question 7

State symbols

Answer 7

The abbreviations used in balanced symbol equation to show id reactants and products are solid (s), liquid (l), gas (g) or dissolved in water (aq).

Question 8

Aqueous solutions

Answer 8

The mixture made by adding a soluble substance to water.