Decoding Chemical Equations from Word Problems

What is the purpose of using symbols like (s) and (aq) in chemical equations?

• To indicate the color of the substances

• To show the states of matter of the substances

• To denote the pH level of the substances

• To represent the temperature of the reaction

In the reaction between solid copper and aqueous silver nitrate, what are the products?

• Solid copper and aqueous silver nitrate

• Aqueous copper(II) nitrate and solid silver

• Solid silver and aqueous copper

• Aqueous silver and solid copper nitrate

What is the correct formula for aqueous silver nitrate?

• Ag(NO3)2 (aq)

• AgNO3 (aq)

• AgNO3 (s)

• Ag2NO3 (aq)

How many nitrates are needed to balance the equation for the reaction between solid copper and aqueous silver nitrate?

• 2

• 3

• 1

• 4

What are the products of the reaction between aluminum sulfate and calcium hydroxide?

• Solid aluminum hydroxide and solid calcium sulfate

• Aqueous aluminum hydroxide and solid calcium sulfate

• Aqueous aluminum sulfate and solid calcium hydroxide

• Solid aluminum hydroxide and aqueous calcium sulfate

What is the correct formula for aluminum sulfate?

• Al(SO4)3

• Al2(SO4)3

• Al(SO4)2

• Al2SO4

Which of the following is a diatomic molecule?

• Phosphorus

• Sulfur

• Oxygen

• Carbon

How many diatomic molecules are there?

• 8

• 7

• 6

• 5

What are the reactants in the combustion of toluene?

• Carbon dioxide and water

• Oxygen gas and water

• Toluene and oxygen gas

• Toluene and carbon dioxide

What is the product of the decomposition of silver oxide?

• Silver nitrate

• Silver and carbon dioxide

• Silver and oxygen gas

• Silver and water