Question 1

What happens to the temperature change in an exothermic reaction?

Accepted Answer

It increase

Answer

It decreases

Answer

Stays the same

Question 2

In an exothermic reaction where does the energy transfer to?

Accepted Answer

From the reaction to the surroundings

Answer

From the surroundings to the reaction

Answer

It is created in the reaction

Answer

It is destroyed in the reaction

Question 3

What is an endothermic reaction?

Accepted Answer

Energy enters the reaction from the surroundings, temperature decrease

Answer

Energy exits the reaction from the surrounding. Temperature stays the same.

Answer

Energy exits the reaction from the surrounding. Temperature decreases

Answer

Energy exits the reaction from the surrounding. Temperature increases.

Question 4

What is the temperature change in reaction A?

Accepted Answer

25

Answer

-25

Answer

28

Answer

71

Question 5

What is the temperature change in reaction B?

Accepted Answer

11

Answer

51

Answer

-11

Answer

10

Question 6

What is the temperature change in Reaction C?

Accepted Answer

-8

Answer

8

Answer

-7

Answer

36

Question 7

What is the temperature change in reaction D?

Accepted Answer

0

Answer

20

Answer

-20

Answer

40

Question 8

Which reaction was endothermic?

Accepted Answer

C

Answer

D

Answer

B

Answer

A

Question 9

Which reaction probably did not react?

Accepted Answer

D

Answer

C

Answer

B

Answer

A

Question 10

Which reaction would be the best to use as a hand warmer?

Accepted Answer

A

Answer

C

Answer

B

Answer

D

Question 11

What piece of equipment do you need to determine whether a reaction is exothermic or endothermic?

Accepted Answer

Thermometer

Answer

Weighing scale

Answer

Bunsen burner

Answer

Stopwatch

Question 12

What is WRONG with this method?

Accepted Answer

The student has not recorded the starting temperature

Answer

The student has not specified whether we how long he left the thermometer

Answer

The student used too little acid

Answer

The student used too much magnesium

Question 13

An exothermic reaction is when energy...

Accepted Answer

Exits the reaction to the surrounding

Answer

Is destroyed in the reaction

Answer

Enters the reaction from the surrounding

Answer

Is created in the reaction

Question 14

In exothermic reactions there is always...

Accepted Answer

A temperature increase

Answer

no change in temperature

Answer

A temperature decrease

Answer

A large increase in temperature

Question 15

Instant ice packs work by cooling down when two chemicals inside the pack react. What reaction is this?

Accepted Answer

Endothermic

Answer

Exothermic

Answer

Respiration

Answer

Combustion

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