Unit 6 Interactive Review

Which of the images shown here depicts a phase that has definite volume but not definite shape?
1. The one on the left
2. The one on the right
3. The one in the middle
Which of the phases depicted here can be easily compressed?
1. The one on the right
2. The one on the left
3. The one in the middle
4. The one in the middle and the one on the right
Which phase of matter is depicted here?
1. Solid
2. Liquid
3. Gas
4. Plasma
Which phase of matter is depicted here?
1. Solid
2. Liquid
3. Gas
4. Plasma
Which phase of matter is depicted here?
1. Solid
2. Liquid
3. Gas
4. Plasma
Which phase depicted here has both a definite shape and a definite volume?
1. The one on the right
2. The one on the left
3. The one in the middle
4. The one in the middle and the one on the right
Which phase(s) depicted here have the ability to flow?
1. The ones on the right and the left
2. The one on the left
3. The one in the middle
4. The one in the middle and the one on the right
5. The one on the right
Definite shape, definite volume, and a low rate of diffusion are characteristics of:
1. Gases
2. Liquids
3. Solids
4. Fluids
The change of state from a solid directly to a gas is known as:
1. Evaporation
2. Sublimation
3. Fusion
4. Boiling
When ice is melting to form liquid water at constant pressure, it is safe to assume that:
1. the temperature of the system is 0 degrees celsius
2. the temperature of the system is constant
3. the entropy of the system is decreasing
4. the density is decreasing
Ice floats in water because:
1. Water is denser than ice
2. Ice is denser than water
3. Ice is colder than water
4. Water has a substantial surface tension
During the phase change from liquid to solid:
1. energy must be absorbed
2. energy must be removed
3. there is no change in energy
During the phase change from liquid to vapor:
1. energy must be absorbed
2. energy must be removed
3. there is no change in energy
During phase changes, the temperature of the substance undergoing change:
1. continues to increase
2. continues to decrease
3. stays the same
4. fluctuates
In a solution of sugar and water, the solvent is the:
1. sugar
2. water
In a solution of sugar and water, the solute is the:
1. sugar
2. water
A substance whose water solution does not conduct an electric current is a(n):
Which of the following substances, when dissolved in a water solution, will allow current to flow in the device pictured above, resulting in the lightbulb becoming lit?
1. Ethanol (ethyl alcohol)
2. sodium chloride
3. Sucrose (table sugar)
4. HCl - hydrochloric acid
5. sodium hydroxide
Gases dissolve best in liquids when:
1. the pressure is high and the temperature is high
2. the pressure is low and the temperature is high
3. the pressure is high and the temperature is low
4. the pressure is low and the temperature is low
The solubility of potassium nitrate in water at 35 °C is about 60 grams KNO₃ per 100 grams of water. How many grams of KNO₃ should dissolve in 300 grams of water at 35 °C?
1. 180 grams
2. 20 grams
3. 335 grams
Breaking up a solid speeds dissolving in a liquid by:
1. raising the temperature
2. decreasing the pressure
3. increasing surface area
4. slowing hydration
Most salts become more soluble in water as the:
1. pressure is increased
2. pressure is decreased
3. temperature is increased
4. temperature is decreased
Fats do not dissolve in water because:
1. Fats and water are both nonpolar
2. Fats are polar and water is nonpolar
3. Fats and water are both polar
4. Fats are nonpolar and water is polar
Calculate the concentration of the following solution in units of grams per liter:

12 grams of NaCl is dissolved in 3.00 L of solution
1. 36 g/L
2. 0.250 g/L
3. 4 g/L
4. 15 g/L
Calculate the concentration of the following solution in units of molarity, M, moles per liter:

80 grams of NaOH is dissolved in 2 L of solution
1. 1 M NaOH
2. 40 M NaOH
3. 160 M NaOH
4. 82 M NaOH
Calculate the concentration of the following solution in units of parts per million, ppm:

12 grams of NaCl is dissolved in 3.00 L of solution
1. 4000 ppm NaCl
2. .004 ppm NaCl
3. 4 ppm NaCl
4. 4 x 10⁶ ppm NaCl
Calculate the concentration of the following solution in units of percent composition:

12 grams of NaCl is dissolved in 3.00 L of solution
1. 40% NaCl
2. 0.0068% NaCl
3. 0.4% NaCl
4. 25% NaCl
What two substances are always produced by a neutralization reaction?
1. an acid and a base
2. water and a base
3. water and a salt
4. water and an acid
According to the Brønsted-Lowry definition, a base is:
1. a proton donor
2. a proton acceptor
3. a proton
4. a proton destroyer
Acids taste:
1. Sweet
2. Salty
3. Bitter
4. Sour
Bases taste:
1. Sweet
2. Salty
3. Bitter
4. Sour
A positive test for an acid occurs when:
1. red litmus turns blue
2. red litmus remains red
3. blue litmus turns red
4. blue litmus remains red
A positive test for a base occurs when:
1. red litmus turns blue
2. red litmus remains red
3. blue litmus turns red
4. blue litmus remains red
Bases cause phenolphthalein to turn:
1. orange
2. green
3. violet
4. clear
Strong acids:
1. Ionize slightly and produce few hydrogen ions in solution
2. Ionize completely and produce many hydroxide ions in solution
3. Ionize completely and produce many hydrogen ions in solution
4. Ionize slightly and produce few hydroxide ions in solution
Indicator Results
Phenolphthalein Clear
Red litmus Remains red
Blue litmus Turns red
Methyl orange Turns deep red

An unknown substance produced the experimental results noted above. Based on this data, the unknown is:
1. a base
2. a sugar
3. an acid
4. impossible to identify
The strongest bases are hydroxides of:
1. halogens
2. noble gases
3. transition metals
4. group 1 and group 2 metals
Which of the following is a property of acids?
1. Feel slippery
2. Turn red litmus blue
3. taste bitter
4. react with metals to form hydrogen gas
Acids have a pH that is:
1. greater than 7
2. equal to 7
3. less than 7
Bases have a pH that is:
1. greater than 7
2. equal to 7
3. less than 7
Which of the following pH values indicates the strongest acid?
1. 1
2. 4
3. 7
4. 11
When 100 mL of 1 M HCl is added to 100 mL of 2 M NaOH, the resulting solution would be:
1. acidic
2. basic
3. neutral
When 200 mL of 1 M HCl is added to 100 mL of 1 M NaOH, the resulting solution would be:
1. acidic
2. basic
3. neutral
When 100 mL of 1 M HCl is added to 100 mL of 1 M NaOH, the resulting solution would be:
1. acidic
2. basic
3. neutral

Indicator	Results
Phenolphthalein	Clear
Red litmus	Remains red
Blue litmus	Turns red
Methyl orange	Turns deep red

Unit 6 Interactive Review

Multiple-choice exercise