Unit 3 Week 2 Review

Which of the following is NOT a characteristic of endothermic reactions?

• They release energy

• Temperature decreases

• Chemical bonds are formed

• Energy goes into the reaction

Which of the following is NOT a characteristic of exothermic reactions?

• Energy goes out of the reaction

• Temperature decreases

• Chemical bonds are broken

• They release energy as heat or light

• Exothermic

• Endothermic

• Exothermic

• Endothermic

Energy is absorbed when forming bonds. Energy is released when breaking bonds. If a reaction breaks 5 bonds and forms 3 bonds, the reaction will most likely be...

• Exothermic

• Endothermic

Energy is absorbed when forming bonds. Energy is released when breaking bonds. If a reaction breaks 3 bonds and forms 5 bonds, the reaction will most likely be...

• Endothermic

• Exothermic

A reaction in which there is only 1 reagent and 2 or more products

• Synthesis

• Decomposition

• Single replacement

• Double replacement

What type of reaction is represented by the drawing?

• Synthesis

• Decomposition

• Single replacement

• Double replacement

Classify the following reaction:

 $F_2\left(g\right)+NaI\left(aq\right)\rightarrow NaF\left(aq\right)+I_2\left(g\right)$  

• Synthesis

• Decomposition

• Double replacement

• Single replacement

Classify the following reaction:

 $CO\left(g\right)+O_2\left(g\right)\rightarrow CO_2\left(g\right)$  

• Synthesis

• Single replacement

• Double replacement

• Decomposition