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Balancing equations quiz practice

Total questions: 59

Worksheet time: 2hrs 19mins

Name
Class
Date
1.

PCl5 + ___ H2O → ___ HCl + H3PO4

a)

4, 5

b)

1, 6

c)

3, 8

d)

2,2

2.

__ Al + __ FeO → Al2O2 + __ Fe

a)

1, 1, 2

b)

2,1,2

c)

2, 2, 2

d)

2,4,2

3.
 Mg  +  ___ HCl  →   MgCl2  +   H2
a)
1
b)
2
c)
3
d)
4
4.
Which side of a chemical equation is the reactant side?
a)
Left (before the yields sign)
b)
Right (after the yields sign)
5.
Which side of a chemical equation os the product side?
a)
Left (before the yields sign)
b)
Right (after the yields sign)
6.
Which problem is balanced?
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
7.
Balance this equation.
_SnO2 +_H2-->_Sn +_H2O
a)
1,1,2,1
b)
1,2,1,1
c)
1,2,1,2
d)
1,2,2,1
8.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
9.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction. 
10.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
11.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
12.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
13.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
14.
If a reaction starts with a total 75g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 75g of products
c)
a total of 180 g of products
d)
None of the above
15.

Which is the correct chemical equation for the following: Solid Zn reacts with silver (I) chloride to produce Zinc (II) chloride and silver metal

a)

Zn + AgCl → ZnCl2 + Ag

b)

ZnCl2 + Ag → Zn + AgCl

c)

ZnCl2 + Ag2 → Zn + AgCl

d)

Zn2Cl + Ag → Zn + AgCl

16.
Which is NOT a diatomic molecule?
a)
Fluorine
b)
Nitrogen
c)
Boron
d)
Bromine
17.

Which is the correct chemical equation for the following: Barium Chloride combined with sodium sulfide yields barium sulfide and sodium chloride

a)

BaCl + NaS → BaS+ NaCl

b)

BaCl2 + Na2S → BaS+ NaCl

c)

BaS+ NaCl → BaCl + NaS

d)

BaCl2 + Na2S → BaS+ NaCl2

18.

Which compounds are the PRODUCTS of this reaction?

a)

CO2 + H2O

b)

C6H12O6 + O2

c)

C6H12O6 + CO2

d)

H2O + O2

19.
Which is the correct formula for the compound formed between beryllium and nitrogen?
a)
BeN
b)
Be3N
c)
Be3N2
d)
Be2N3
20.
Which is the correct name for the compound PCl5?
a)
monophosphorus tetrachloride
b)
phosphorus chloride
c)
phosphorus pentachloride
d)
pentaphosphorus chloride
21.
Which type of chemical reaction is shown?
a)
double replacement
b)
composition
c)
combustion
d)
decomposition
22.
Which type of reaction can be recognized by the general pattern?
a)
combustion
b)
single replacement
c)
composition
d)
decomposition
23.
Which type of reaction is Al  +  O2   → Al2O3?
a)
composition
b)
decomposition
c)
single replacement
d)
combustion
24.
Aluminum (Al) has three electrons in its outer shell.  Oxygen (O) needs two electrons to complete its outer shell.  What is the chemical formula for aluminum oxide?
a)
AlO
b)
AlO2
c)
Al2O
d)
Al2O3
25.
Identify the type of chemical reaction demonstrated by this equation:
KClO3  →  KCl  +  O2
a)
decomposition
b)
combustion
c)
compositions
d)
single replacement
26.
Which type of chemical reaction is this an example of?
Fe2(SO4)3  + KOH →  K2SO4  +  Fe(OH)3
a)
composition
b)
double replacement
c)
single replacement
d)
combustion
27.

Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be?

a)

4.75 grams

b)

5.0 grams

c)

5.25 grams

d)

7.5 grams

28.

A rock weighing 60 g is broken into 2 pieces. What are possible weights for the two pieces of rock?

a)

20 g and 20 g

b)

30 g and 20 g

c)

30 g and 30 g

d)

45 g and 10 g

29.

Jackie creates a piece of artwork by melting crayons and mixing the colors together. She uses 10 crayons that weighed 5 grams each. What is most likely the weight of her artwork?

a)

4 grams

b)

20 grams

c)

50 grams

d)

100 grams

30.

Mrs. Godfrey wants to prove to her students that when an object is burned, its total mass is the same before and after the reaction. What should Mrs. Godfrey do to make sure this is shown by the experiment?

a)

burn the object in a closed container

b)

burn the object outside on a nice day

c)

add water to the object after it is burned

d)

split the object into two equal pieces before burning

31.
This type of system allows matter to flow freely in and out...
a)
Closed System
b)
Open System
32.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
33.
Solids are described as having a 
a)
definite shape and indefinite volume
b)
indefinite shape and indefinite volume
c)
definite shape and definite volume
d)
indefinite shape and definite volume
34.
What state of matter has no definite volume and assumes the shape of its container?
a)
Solid
b)
Liquid
c)
Gas
35.
In what state of matter, do the rigid-particles not move/slide past one another?
a)
Solid
b)
Liquid
c)
Gas
36.
In which segment is the kinetic energy remaining constant?
a)
A-B
b)
B-C
c)
C-D
d)
E-F
37.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
38.

(Charles Law) There are 65 liters of helium in a balloon at 35 K. If the temperature of the balloon is increased to 40 K, what will the new volume of the balloon be? (number sense: use your little PTV card)

a)

40 L

b)

70 L

c)

74.3 L

39.

Tom Brady enjoys balloon animals from the carnival. He just received a balloon giraffe that has an initial temperature of 39.0°C and a volume of 1.28 L. If Gronkowski plays a trick on Tom, and puts his balloon giraffe into the freezer, what would be the new volume of the balloon if the temperature drops down to 8.0°C? (number sense: Use your PTV card)

(Don’t forget about what must be done to temperatures!)

a)

1.15 L

b)

6.85 x 104 L

c)

3.78 L

40.

Tom wants his balloon back to normal size so he decides to put it on a heating vent. If the balloon initially has a volume of 0.6 L and a temperature of 293 K, what will the volume of the balloon be when it heats up to a temperature of 176°C? (number sense: Use your PTV card)

a)

0.39 L

b)

0.92 L

c)

0.92 K

41.

If 200 mL of a gas at 27°C is cooled to -33°C at a constant pressure, the volume will be (number sense: Use your PTV card)

a)

250 mL

b)

160mL

c)

196 mL

42.

A gas with a volume of 400 mL at 120 οC is heated until its volume is 700 mL. What is the new temperature ( in degree Celsius) of the gas if the pressure is constant? (number sense: Use your PTV card)

a)

68.57 οC

b)

687.75 οC

c)

210 οC

43.

A sample of hydrogen at 1.5 atm had its pressure decreased to 0.50 atm producing a new volume of 750 mL. What was its original volume? (number sense: Use your PTV card)

a)

250 ml

b)

751 mL

c)

749 mL

44.
When Pressure increases then the Volume must...
a)
Increase
b)
decrease
45.

A gas occupies 4.98 L at 2.6 atm of pressure. What volume does it occupy at 1.8 atm pressure? (number sense: Use your PTV card)

a)

3.44 L

b)

0.72 L

c)

7.2 L

46.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
47.

One goes up, one goes down is which of the following: PICK TWO

a)

Inverse proportion

b)

Charles' Law

c)

Direct Proportion

d)

Boyles' Law

48.

BOTH goes up, BOTH goes down is which of the following: PICK TWO

a)

Inverse proportion

b)

Charles' Law

c)

Direct Proportion

d)

Boyles' Law

49.
The relationship of which two variables are compared in Boyle's Law?
a)
pressure & volume
b)
volume & temperature
c)
temperature & pressure
d)
volume & moles (amount of gas)
50.

Gas pressure is caused by

a)

Gas molecules heating up

b)

Gas molecules reacting with other gas molecules

c)

Gas molecules hitting the walls of a container

d)

Gas molecules hitting other gas molecules

51.

The temperature of gas is held constant, while its volume is decreased. The pressure exerted by the gas on the wall of the container increases, because its molecules

a)

Strike the walls with higher velocities

b)

Strike the walls with large farce

c)

Strike the walls more frequently

d)

Are in contact with the walls for a shorter time

52.

A sample of a gas in a cylinder is shown. If the temperature is kept constant and the piston moves down to decrease volume, the pressure increases because the gas particles...

a)

Expand

b)

Become smaller

c)

Lose velocity within the container

d)

Collide more often within the container

53.

What happened to the volume between the two steps?

a)

Volume increased

b)

Volume decreased

c)

Volume stayed the same

54.

If a balloon is cooled what will happen to the volume?

a)

Volume will increase

b)

Volume will decrease

c)

Volume will not change

55.

According to Charles' Law if temperature goes up...

a)

Pressure goes down

b)

Pressure goes up

c)

Volume goes down

d)

Volume goes up

56.

Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L.

a)

0.029 K

b)

0.021 K

c)

227.76 K

57.
Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure. 
a)
0 K 
b)
107 K 
c)
207 K 
d)
307 K 
58.
A sample of oxygen gas has a volume of 150.0 mL when its pressure is .947 atm. What will the volume of the gas be if it is lowered to a pressure of 0.658 atm and the temperature remains constant?
a)
72 mL
b)
144 mL
c)
216 mL
d)
288 mL
59.

Compare the particle movement between part C and Part D

a)

Particles are increasing speed at point D, particles are at a CONSTANT speed at C, overall particle speed is higher at D because of a higher temperature.

b)

Particles are increasing speed at point C, particles are at a CONSTANT speed at D, overall particle speed is higher at D because of a higher temperature.

c)

Particles are increasing speed at point C, particles are at an INCREASING speed at D, overall particle speed is higher at D because of a higher temperature.

d)

Particles are increasing speed at point D, particles are at an INCREASING speed at C, overall particle speed is higher at C because of a positive slope

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