Unit 9: Chemical Reactions

Which of the following describes the basic structure of single replacement reactions?

• A + B --> C

• A + B --> AB

• A + BC --> AC + B

• AB + CD --> AD + CB

What are the products of ALL combustion reactions?

• Carbon Dioxide and Water

• Smoke and Ash

• Fire and Carbon Dioxide

• Water and Ash

What type of reaction is this?

2NaHCO₃ --> Na₂CO₃ + H₂O + CO₂

• Single Replacement

• Combustion

• Decomposition

• Synthesis

What type of reaction is this?

2Na + 2H₂O --> 2NaOH + H₂

• Single Replacement

• Double Replacement

• Synthesis

• Decomposition

What does the symbol (aq) stand for?

• Aquatic

• Aqueous

• Aqua

• Aquarium

Use the activity series, seen in the image, to determine if the reaction will occur.

Ca + Fe₂S₃ --> ?

• Yes, the reaction will occur

• No, the reaction will not occur

• Cannot be determined

Which coefficient should be placed in front of NH₃ to balance this equation?

NH₃ + H₂SO₄ --> (NH₄)₂SO₄

• 1

• 2

• 3

• 1,000,000,000

Which coefficient should be placed in front of Lithium to balance this equation?

AlCl₃ + Li --> LiCl + Al

• 1

• 2

• 3

• 0.00000000000001

What type of reaction is this?

CH₄ + 2O₂ --> 2H₂O + CO₂

• Combustion

• Synthesis

• Double Replacement

• Single Replacement

What type of reaction is this?

Pb(NO₃)₂ + 2KI --> 2KNO₃ + PbI₂

• Double Replacement

• Single Replacement

• Synthesis

• Decomposition