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Gases Introduction

Total questions: 29

Worksheet time: 29mins

Name
Class
Date
1.

What is true of molecules of gas that are exposed to heat in a fixed volume container?

a)

They move faster and they cause the pressure to increase

b)

They move slower and pressure will decrease

c)

The volume increases and pressure increases

d)

The volume decreases and the pressure decreases.

2.

A mole of a substance is equal to how many particles?

a)

6 x (10 to the 23 power)

b)

22.4 liters of gas

c)

equal to a dozen

d)

6 Kelvins

3.

What is the value of STP?

a)

0 K and 1 atmosphere

b)

0 C and 1 atmosphere

c)

32 F and 1 atmosphere

d)

100 C and 1 atmosphere

4.

what volume does one mole of a gas occupy at STP?

a)

22.4 Liters

b)

22.4 gallons

c)

2.4 Liters

d)

24 Liters

5.

what is the ideal gas law equation?

a)

P1V1=P2V2

b)

PV=nRT

c)

Z=P + N

d)

R=0.0821 L Atm (mole K)-1

6.

What is zero degrees Celsius converted to Kelvin?

a)

100

b)

273

c)

373

d)

212

7.

What is the mass of one mole of carbon dioxide Gas in grams?

a)

44

b)

42

c)

32

d)

34

8.

Which of the following on the periodic table is not a noble gas?

a)

Nitrogen

b)

Xenon

c)

Krypton

d)

Neon

9.
At a constant pressure, the volume decreases.  What happens to the temperature?
a)
increases
b)
decreases
c)
stays the same
10.
At a constant volume, the pressure increases.  What happens to the temperature?
a)
increases
b)
decreases
c)
stays the same
11.
At a constant temperature, the volume decreases.  What happens to the pressure?
a)
increases
b)
decreases
c)
stays the same
12.
The volume of a gas is increased from 150.0 mL to 350.0 mL by heating it. If the original temperature of the gas was 25oC, what will its final temperature be (in oC)
a)
146 oC
b)
10.7 oC
c)
58.3 oC
d)
422 oC
13.
How many grams of potassium chlorate are needed to form
3.45 liters of oxygen gas at STP?
2KClO3 (s) --> 2KCl (s) + 3O2 (g) 
a)
113 g
b)
0.631 g
c)
12.6 g
d)
28.3 g
14.
C3H4 combusts to produce carbon dioxide gas and liquid water.  Write and balance the equation.  Then, calculate how many liters of carbon dioxide is produced from 3 L C3H4.
a)
1 L
b)
9 L
c)
3 L
d)
Not enough information.
15.

Two basic properties of the gas phase are

a)

a definite shape and a definite volume

b)

a definite shape but no definite volume

c)

no definite shape but a definite volume

d)

no definite shape and no definite volume

16.

A closed container holds 3.0 moles of CO2 gas at STP. What is the total number of moles of Ne(g) that can be placed in a container of the same size at STP?

a)

1.0 moles

b)

1.5 moles

c)

3.0 moles

d)

6.0 moles

17.

The pressure on a 200-milliliter sample of CO2(g) at constant temperature is increased from 0.790 atm to 1.58 atm. What is the new volume of the gas?

a)

100 mL

b)

300 mL

c)

400 mL

d)

600 mL

18.

Which graph best represents the variation in the vapor pressure of water as temperature changes?

a)
b)
c)
d)
19.

A 2.00-liter sample of a gas has a mass of 1.80 grams at STP. What is the density, in grams per liter, of this gas at STP?

a)

0.900

b)

1.80

c)

11.2

d)

22.4

20.

If 60. liters of hydrogen gas at 546 K is cooled to 273 K at constant pressure, the new volume of the gas will be

a)

120 L

b)

20 L

c)

30 L

d)

40 L

21.

Which substance at STP exists in the form of a monatomic gas?

a)

neon

b)

oxygen

c)

hydrogen

d)

chlorine

22.

Real gas behavior deviates from ideal gas behavior because real gas particles have

a)

no volume and no attraction for each other

b)

no volume but some attraction for each other

c)

volume but no attraction for each other

d)

volume and some attraction for each other

23.

Two stoppered flask contains 2L of gas at STP, one containing CH4(g) and O2(g). Each gas sample contains the same

a)

density

b)

mass

c)

number of molecules

d)

number of atoms

24.
Kinetic Energy means...
a)
energy that a body possesses by virtue of being in motion.
b)
energy that a body possesses by stored energy due to height.
c)
energy stored in the bonds ofchemical compounds.
d)
radiant energy emitted by the sun
25.
Which among the following is not a property of gases?
a)
high compressible
b)
thermally expandable
c)
infinitely miscible
d)
high density
26.
Movement of gas through a tiny opening
a)
Diffusion
b)
Effusion
27.
What is the lightest gas in the Periodic Table of Elements?
a)
Helium
b)
Oxygen
c)
Hydrogen
d)
Neon
28.
Arrange the following (from shortest to longest) based on their relative distance: solid, liquid, gas
a)
solid<liquid<gas
b)
gas<solid<liquid
c)
solid<gas<liquid
d)
gas<liquid<solid
29.
One assumption in KMT is that particles move in random straight line motion.
a)
True
b)
False

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