WorksheetsChemistry I - Practice Ch. 10 Gases & Ch. 11 Liquids & Solids
Total questions: 29
Worksheet time: 15mins
Name
Class
Date
1.
What property allows raindrops to form droplets and resist being broken apart by external forces?
a)
External resistance
b)
Internal tension
c)
Liquid cohesion
d)
Surface tension
2.
For small molecules of comparable molecular weight, which one of the following choices lists the intermolecular forces in the order of increasing strength?
a)
a. hydrogen bonds < dipole–dipole forces < London forces
b)
b. dipole–dipole forces < hydrogen bonds < London forces
c)
c. London forces < hydrogen bonds < dipole–dipole forces
d)
d. London forces < dipole–dipole forces < hydrogen bonds
3.
Which covalent compound will exhibit hydrogen bonding in the liquid state?
a)
a. CH2F2
b)
b. Cl2NH
c)
c. H2PCl
d)
d. HBr
4.
The property that measures or describes the magnitude of resistance to flow in a liquid is called
a)
a. London forces.
b)
b. malleability.
c)
c. surface tension.
d)
d. vapor pressure.
e)
e. viscosity.
5.
Which set of properties below is associated with ionic crystalline substances?
a)
a. broad range of melting points, soft to hard, conductors in liquid and solid states
b)
b. high melting point, brittle, nonconductor
c)
c. high melting point, hard, not brittle, nonconductor
d)
d. low melting point, soft, nonconductor
e)
e. low melting point, soft, conductor in liquid and solid states
6.
Which set of properties below is associated with metallic substances?
a)
a. broad range of melting points, soft to hard, conductors in liquid and solid states
b)
b. high melting point, brittle, nonconductor
c)
c. high melting point, hard, not brittle, nonconductor
d)
d. low melting point, soft, nonconductor
e)
e. low melting point, soft, conductor in liquid and solid states
7.
Paradichlorobenzene is a white crystalline solid which is very soft, has a low melting point, and is a nonconductor of electricity. Which category of substance does it most likely fit under?
a)
a. ionic
b)
b. molecular
c)
c. metallic
d)
d. covalent (network)
e)
e. amorphous
8.
Silicon carbide, which has the empirical formula: SiC, melts at 2830 °C and is nearly as hard as boron nitride and diamond. Which category of substance does it most likely fit under?
a)
a. ionic
b)
b. molecular
c)
c. metallic
d)
d. covalent
e)
e. amorphous
9.
What is the equation that describes the behavior of an ideal gas under varying conditions of pressure, volume, and temperature?
a)
The ideal gas law equation is PV = nT/R, where P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature.
b)
V = PnRT
c)
PV = nRT
d)
P = V/nRT
10.
A U.S. Weather Bureau forecast cited the atmospheric pressure at sea level as having a value of 768.2 mm Hg. Expressed in kilopascals (kPa) wWhat would the value be? ( 1 atm = 101325 Pa = 760 torr = 760 mm Hg = 1.01325 bar = 1013.25 mb)
a)
778.4 kPa
b)
102.4 kPa
c)
100.3 kPa
d)
1024 kPa
11.
A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 4.626 liters when the pressure was 0.983 atm and the temperature was 27.2 °C. The pressure was readjusted to 1.388 atm by moving the piston. What was the volume occupied by the sample under the new conditions if the temperature remained constant throughout?
a)
0.303 L
b)
3.28 L
c)
4.68 L
d)
6.35 L
12.
If you increase the pressure of a constant volume of gas, what will happen to the temperature?
a)
Increase
b)
Decrease
c)
Stay the same
d)
It will Blow Up
13.
Gas molecules can easily be compressed because ___________.
a)
gas molecules are soft
b)
gas molecules are far apart
c)
gas molecules follow the shape of the container
14.
Pressure is caused by ______.
a)
gravity.
b)
gas molecules colliding with each other.
c)
gas molecules colliding with surfaces of the container.
d)
gas molecules reacting with each other.
15.
You decide to make a balloon animal. As the balloon is being twisted, it increases the pressure inside of the balloon. What happens to the volume?
a)
It increases
b)
It decreases
c)
It stays the same
16.
You go camping and roast marshmallows over a campfire. What happens to the volume of the air bubbles inside the marshmallows?
a)
It increased
b)
It decreased
c)
It stayed the same
17.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Decrease the volume
c)
Pump in more gas
d)
All of these
18.
Pick the best answer to explain all properties of gases....
a)
They're can flow freely. Cannot be compressed. Lots of space between particles.
b)
They're can flow freely. Can be compressed. Little space between particles.
c)
They're can't flow freely. Can be compressed. Lots of space between particles.
d)
They're can flow freely. Can be compressed. Lots of space between particles.
19.
Why does a car get low tire pressure in the COLD...what two variables are to blame?
a)
Pressure and Temperature
b)
Temperature and Volume
c)
Volume and Pressure
d)
Temperature and Weight
20.
What 2 variables are used in a Hot Air Balloon?
[Hint: Space and Heat]
a)
Pressure and Volume
b)
Volume and Temperature
c)
Temperature and Pressure
d)
Pressure, Temperature and Volume
21.
If a solid transitions directly to a gas it is called
a)
Sublimation
b)
Melting
c)
Vaporisation
d)
It is impossible
22.
What type of forces exist between molecules in a liquid or solid state?
a)
Gravitational forces
b)
Intramolecular forces
c)
Electromagnetic forces
d)
Intermolecular forces.
23.
What will happen to the volume of a gas under constant temperature if the pressure increases?
a)
Increase
b)
Decrease
c)
Nothing
d)
Explosion!
24.
Pressure is caused by ______.
a)
gravity.
b)
gas molecules colliding with each other.
c)
gas molecules colliding with surfaces of the container.
d)
gas molecules reacting with each other.
25.
As the temperature of a liquid increases, the viscosity
a)
Increases
b)
Doesn't change
c)
Decreases
d)
Not enough information
26.
Which response lists all the following pairs that are miscible liquids?
Pair # 1. octane (C8H18) and water
Pair # 2. ammonia (NH3) and water
Pair # 3. octane (C8H18) and carbon tetrachloride (CCl4)
a)
1 and 3
b)
1 and 2
c)
2 only
d)
2 and 3
27.
A solution is made by mixing 138.2 grams of ethanol, C2H6O, (46.069 g mol-1); 103.6 grams of water (18.015 g mol-1), and 80.11 grams of methanol, CH4O (32.042 g mol-1). What is the mole fraction of methanol in the mixture?
a)
0.02504
b)
0.2222
c)
0.2493
d)
0.3333
28.
A solution of sodium nitrite is prepared by mixing 3.25 g of NaNO2 with 12.0 g of water. The percent, by mass, of NaNO2 is
a)
28.0 %
b)
23.3 %
c)
27.0 %
d)
21.3 %
29.
An aqueous solution of ethanol, C2H5OH, is 19.00% ethanol by mass and has a density of 0.9700 g mL-1. Calculate the molality of the ethanol solution.
a)
4.000 m
b)
4.124 m
c)
4.252 m
d)
5.092 m
100 %
