# 8.1 Practice Worksheet B Name: ____________________________________________________ Date: ______________ Period: ____________

8.1 Practice Worksheet B

### Writing & Balancing Formula Equations

Part 1

Turning word equations into formula equations can be a bit tricky. Before you balance the equation, you must first write a correct ionic, covalent (possibly organic), or acid formula. In addition, you should also include the state of matter for each compound.

States of Matter in Chemical Equations

(s) – solid (l) – liquid (g) – gas (aq) - aqueous pure metals & metalloids; a few nonmetals

Ex:

Water, ammonia hydrocarbons larger than butane

Ex:

Diatomic gases

Ex:

Soluble ionic compounds

Ex: insoluble ionic compounds

Ex:

Most covalent compounds

All acids

Ex:

Ex:

 To check if an ionic compound is soluble (aq) you must use a solubility chart or solubility rules.

 Remember!!! o Insoluble ionic compounds: _______ able to be dissolved – use (s) o Soluble ionic compounds: able to be dissolved – use (aq)

Part 2

Write balanced formula equations for the following reactions, including the states of matter for each compound. (You may need to use old techniques like the criss-cross rule to identify an individual formula)

1.

zinc + lead (II) nitrate yield zinc nitrate + lead

2.

aluminum bromide + chlorine yield aluminum chloride + bromine

3.

potassium chlorate when heated yields potassium chloride + oxygen gas

4.

aluminum + hydrochloric acid yield aluminum chloride + hydrogen gas

5.

calcium hydroxide + phosphoric acid yield calcium phosphate + water

6.

copper + sulfuric acid yield copper (II) sulfate + water + sulfur dioxide

7.

hydrogen + nitrogen monoxide yield water + nitrogen