Quiz about endothermic/exothermic

Question 1

A + Heat -------> C + D

Accepted Answer

Endothermic

Answer

Exothermic

Question 2

A + B-------> C + Heat

Accepted Answer

Exothermic

Answer

Endothermic

Question 3

Absorbs energy

Accepted Answer

Endothermic

Answer

Exothermic

Question 4

Energy is being taken in

Accepted Answer

Endothermic

Answer

Exothermic

Question 5

2 N2O5 + 110 kJ ------->4NO2 + O2

Accepted Answer

Endothermic

Answer

Exothermic

Question 6

2H2O2 -------> 2H2O + O2 + 200kJ

Accepted Answer

Exothermic

Answer

Endothermic

Question 7

Releases energy

Accepted Answer

Exothermic

Answer

Endothermic

Question 8

Is this reaction endothermic or exothermic?

Accepted Answer

endothermic

Answer

exothermic

Question 9

Which letter represents the activation energy?

Accepted Answer

B

Answer

E

Answer

C

Answer

D

Question 10

Does this show an endothermic or an exothermic reaction?

Accepted Answer

Exothermic

Answer

Endothermic

Question 11

Is this showing an endothermic or an exothermic reaction?

Accepted Answer

Endothermic

Answer

Exothermic

Question 12

Activation energy is required to start a chemical reaction. What is activation energy?

Accepted Answer

The minimum amount of energy needed for a reaction to potentially occur

Answer

The energy needed for a reaction to occur

Answer

The energy added by a catalyst

Answer

The energy possessed by the products

Question 13

What letter represents the energy of the products?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 14

This is when heat is absorbed, it is an

Accepted Answer

endothermic reaction

Answer

Exothermic reaction

Answer

both

Answer

none

Question 15

The temperature increases outside of this reaction

Accepted Answer

exothermic

Answer

endothermic

Answer

both

Answer

none

Question 16

The temperature decreases outside of this reaction

Accepted Answer

endothermic

Answer

exothermic

Answer

both

Answer

none

Question 17

Fire is an example of

Accepted Answer

exothermic reaction

Answer

endothermic reaction

Answer

none

Answer

both

Question 18

An ice pack in an example of

Accepted Answer

endothermic

Answer

exothermic

Answer

both

Answer

none

Question 19

Your hands get cold outside from not wearing gloves

Accepted Answer

exothermic

Answer

endothermic

Answer

both

Answer

none

Question 20

What type of reaction is this?

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Kinetic

Answer

Potential

Question 21

$$O_2\left(g\right)\ +\ 2\ H_2\ \left(g\right)\ \rightarrow\ 2\ H_2O\ \left(g\right)\ +\ Energy$$

Accepted Answer

exothermic

Answer

endothermic

Question 22

$$6\ CO_2+\ 6\ H_2O\ +\ Energy\ \rightarrow\ C_6H_{12}O_6\ +\ 6\ O_2$$

Accepted Answer

endothermic reaction

Answer

exothermic reaction

Question 23

In an endothermic reaction the products have

Accepted Answer

more energy than the reactants

Answer

less energy than the reactants

Answer

the same energy as the reactants

Answer

no energy

Question 24

In an exothermic reaction the products have

Accepted Answer

less energy than the reactants

Answer

more energy than the reactants

Answer

the same energy as the reactants

Answer

no energy

Question 25

The diagram represents which type of reaction

Accepted Answer

exothermic

Answer

endothermic

Question 26

As the reaction progresses in an ____ reaction, the temperature of the reaction decreases.

Accepted Answer

endothermic

Answer

exothermic

Question 27

When a scientist mixed two chemicals, an exothermic reaction takes place. Which of the following would be proof that the reaction was exothermic?

Accepted Answer

a temperature increase

Answer

a change of color

Answer

a change of state

Answer

a temperature decrease

Question 28

Is this equation endo- or exo-thermic?

2KNO₃ (s) + energy --> 2KNO₂ (s) + O₂

Accepted Answer

endothermic

Answer

exothermic

Question 29

6. Which of these processes is always exothermic?

Accepted Answer

B. burning

Answer

A. evaporation

Answer

C. insulation

Answer

D. melting

Question 30

In the figure, heat energy is _____ during the reaction.

Accepted Answer

released

Answer

absorbed

Question 31

H₂ + 2 C + N₂+ 270.3 kJ --> 2 HCN
Is this reaction endothermic or exothermic?

Accepted Answer

Endothermic

Answer

Exothermic

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