Word Equations

Which symbol shows a chemical reaction has occured?

• A

• B

• C

• D

Identify the product(s) in this word equation

• Sodium

• Sodium chloride

• Sodium and Chlorine

• Sodium and sodium chloride

There is more than one answer.

In a word equation the REACTANTS

• Are written on the left hand side of the arrow

• Are used up in a chemical reaction

• Are always the same

• Are the substances that react together

How many products are there in this reaction?

• One

• Two

• Three

• Four

What are the reactants in this word equation?

• Carbon dioxide and oxygen

• Carbon dioxide and water

• Oxygen and glucose

• Oxygen and water

In a chemical reaction...

• new atoms are created

• atoms rearrange themselves

• atoms are destroyed

• nothing Happens

Magnesium reacts with oxygen to form magnesium oxide. The correct word equation is...

• A

• B

• C

• D

Magnesium burns in oxygen to produce magnesium oxide.

Choose the correct word equation.

• magnesium + oxygen → magnesium oxide

• magnesium + carbon dioxide → oxygen

• magnesium + oxygen → carbon dioxide

Sodium reacts with chlorine to produce sodium chloride. Choose the correct word equation.

• sodium chloride → chlorine + sodium

• sodium + carbon dioxide → sodium carbonate

• sodium + chlorine → sodium chloride

Iron reacts with sulfur to produce iron(II) sulfide. Choose the correct word equation.

• iron + solid → iron sulfide

• iron + sulfur → iron sulfide

• iron sulfide + iron→ sulfur

• sulfur + iron sulfide → iron