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Fuels Unit Part 1 Test Review

Total questions: 22

Worksheet time: 13mins

Name
Class
Date
1.

In an endothermic reaction, heat is ...

a)

taken in

b)

given out

2.
In an exothermic reaction, heat is ...
a)
taken in
b)
given out
3.
If a chemical reaction is EXOTHERMIC, the temperature would....
a)
Stay the same
b)
Increase
c)
Decrease
4.
During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______. 
a)
Warm
b)
Cold
5.

O2(g) + 2 H2 (g)  2 H2O (g) + EnergyO_2\left(g\right)\ +\ 2\ H_2\ \left(g\right)\ \rightarrow\ 2\ H_2O\ \left(g\right)\ +\ Energy  

a)

endothermic

b)

exothermic

6.

6 CO2+ 6 H2O + Energy  C6H12O6 + 6 O26\ CO_2+\ 6\ H_2O\ +\ Energy\ \rightarrow\ C_6H_{12}O_6\ +\ 6\ O_2

a)

endothermic reaction

b)

exothermic reaction

7.

A reaction is endothermic if the change in energy (ΔH) is

a)

Positive

b)

Negative

c)

Zero

8.

A reaction is exothermic if the change in energy (ΔH) is

a)

Positive

b)

Negative

c)

Zero

9.

Which reaction type is this?

a)

Exothermic

b)

Endothermic

10.

Which reaction type is this?

a)

Exothermic

b)

Endothermic

11.
Balance this reaction: ____ Na3PO4 + ____ KOH ---> ____ NaOH + ____ K3PO4
a)
1,3,3,1
b)
1,3,2,1
c)
2,3,3,1
d)
1,1,3,1
12.
Balancing this reaction: ____ CH4 + ____ O2 ---> ____ CO2 + ____ H2O
a)
2,1,3,1
b)
1,2,1,2
c)
1,2,2,1
d)
2,1,1,2
13.
Balance this reaction: ____ NaF + ____ Br2 ---> ____ NaBr + ____ F2
a)
3,1,2,1
b)
1,2,3,4
c)
2,1,2,1
d)
1,2,1,2
14.
Balance this reaction: ____ C5H14 + ____ O2 ----> ____ CO2 + ____ H2O
a)
1,8,5,7
b)
2,12,5,14
c)
3,27,15,24
d)
2,17,10,14
15.

Na3PO4 + KOH → 3 NaOH + K3PO4

a)

Synthesis Reaction

b)

Single Displacement Reaction

c)

Double Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

16.
 C + O→ CO2
a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Displacement Reaction

d)

Double Displacement Reaction

e)

Combustion

17.

Cl2 + 2 KI I2 + 2 KCl

a)

Synthesis Reaction

b)

Single Replacement Reaction

c)

Double Replacement

Reaction

d)

Decomposition Reaction

e)

Combustion

18.

2 C5H10 + 15 O2 → 10 CO2 + 10 H2O

a)

Synthesis Reaction

b)

Decomposition Reaction

c)

Single Replacement Reaction

d)

Double Replacement Reaction

e)

Combustion

19.

2 Ag2O → 4 Ag + O­2

a)

Double Replacement Reaction

b)

Synthesis Reaction

c)

Single Replacement Reaction

d)

Decomposition Reaction

e)

Combustion

20.

Using the table of average bond energies below the image, the ΔH for the reaction in kJ is.....

a)

+ 160 kJ

b)

-63 kJ

c)

- 160 kJ

d)

-217 kJ

21.

Does breaking bonds require energy, release energy, or not involve energy at all?

a)

requires energy to break

b)

releases energy when broken

c)

No energy involved

22.

Forming a chemical bond...

a)

requires energy

b)

releases energy

c)

is unrelated to energy