Word equation practice

​ (a)   are what you start with in a chemical reaction

• Reactants
• Products
• Ingredients

​ (a)   are what you make in a chemical reaction

• Products
• Reactants
• Ingredients

magnesium + oxygen ---> ​ (a)  

• magnesium oxide
• calcium oxide
• sodium oxide

​ (a)   + hydrochloric acid ----> calcium ​ (b)   + hydrogen

• calcium
• chloride
• sulfate
• oxide
• magnesium
• iron

Zinc reacts with nitric acid to make zinc nitrate and hydrogen. The word equation is:

• zinc + nitric acid ----> zinc nitrate + hydrogen

• hydrogen + zinc nitrate ---> nitric acid + zinc

In an experiment I reacted 3 different metals with the same amount of acid. The independent variable is

• the amount of acid

• how much the metals bubble

• the type of metal

In an experiment I reacted 3 different metals with the same amount of acid. The control variable is

• the amount of acid

• how fast the reaction is

• the type of metal