What is a solvent?
a
The material that is dissolved
b
The material that increases the speed of the dissolution
c
The material that reduces how much can be dissolved
d
The material that is dissolving another material
Question 2 (1 point)
Which of the following phase changes involves a gas turning into a liquid?
a
Condensation
b
Boiling
c
Sublimation
d
Freezing
Question 3 (1 point)
If you keep a gas's temperature constant, how would you increase the volume of the gas?
a
You would change the temperature
b
You would increase the pressure
c
You would decrease the temperature
d
You would decrease the pressure
Question 4 (1 point)
If you only wanted to increase the particle motion of gas without increasing any of its other properties, which would be the most correct situation?
a
Keep the gas at constant pressure and keep the temperature constant, but increase the volume of the gas
b
Keep the gas in a fixed container at constant pressure and increase the temperature
c
Keep the gas in a fixed container at constant pressure and decrease the temperature
d
Keep the gas at a constant volume and keep the temperature constant, but decrease the pressure of the gas
Question 5 (1 point)
What is supersaturation?
a
Supersaturation occurs when a different solvent is added to a solvent, increasing how much can be dissolved
b
Supersaturation occurs when natural water dilutes a solvent that also dissolves the solute at the same time
c
Supersaturation occurs when a solvent's temperature is increased to increase the dissolving amount, then cooled to a normal temperature
d
Supersaturation requires the use of powered solute, to increase the saturation point beyond the normal maximum
Question 6 (1 point)
Which of the following acids would have the highest electronegativity?
a
PH3
b
HCl
c
H2SO4
d
H2S
Question 7 (1 point)
What is the major difference between the particles in a liquid and a gas of the same substance at the same temperature?
a
The particles in the gas are moving faster than the particles in the liquid
b
The particles in a liquid are still connected, but the particles in a gas have separated from each other and now fly around to fill the container
c
The particles in the liquid have higher masses than the particles in the gas
d
The particles of the gas are separated, so they absorb less heat than normal, which is why gases are typically cooler than liquids
Question 8 (1 point)
What makes a compound an acid?
a
It dissolves into Hydrogen ions in water (H+ and H3O+)
b
It has a pH higher than 7
c
It dissolves into Hydroxide ions in water (OH-)
d
It cannot be mixed with oil
Question 9 (1 point)
What makes a compound a base?
a
It dissolves into Hydrogen ions in water (H+ or H3O+)
b
It has a pH lower than 7
c
It dissolves into Hydroxide ions in water (OH-)
d
It cannot be mixed with oil
Question 10 (1 point)
In the solution of sugar water, sugar is the and water is the.
Blank 1:
Blank 2:
Question 11 (1 point)
A gas becomes more soluble in a liquid when the pressure of the system is decreased.
True
False
Question 12 (1 point)
Which best describes solubility?
a
the speed at which a substance dissolves
b
the temperature at which substances become a mixture
c
the ability of one substance to dissolve in another
d
the amount of surface area per a given mass
Question 13 (1 point)
As temperature increases, the solubility of a solid solute increase.
True
False
Question 14 (1 point)
Match each term to its correct description.
Column A
1.
Concentration:
Concentration
2.
Saturated Solution:
Saturated Solution
3.
Unsaturated Solution:
Unsaturated Solution
4.
Supersaturated Solution:
Supersaturated Solution
Column B
a.A solution that holds less solute than is possible at a given temperature. More solute can dissolve.
b.The amount of one substance in a certain volume of another substance.
c.A solution with as much dissolved solute as it can hold at a given temperature. No more solute can be dissolved.
d.A heated solution that holds more dissolved solute than is possible at a lower temperature.
Question 15 (1 point)
Red cabbage contains a water-soluble pigment. In a highly acidic solution, the pigment turns bright red, and in a moderately acidic solution, it turns pinkish. In a highly basic solution, the pigment turns yellow and is a moderately basic solution, it turns bluish.
A student makes a pH indicator from red cabbage that has a reddish-purple color with a pH of approximately 7. The student pours the same amount of the cabbage solution into each of four different beakers. He then adds a different household solution to each of the four beakers until a color change is obtained. His results are shown in the table below.
The student finds the following chart online from someone else’s cabbage pH indicator investigation.
Based on the information in the passage, which household solution has the highest pH?
a
drain cleaner
b
window cleaner
c
club soda
d
lemon juice
Question 16 (1 point)
The water from hot springs near the Ebeko volcano in the Pacific Ocean has a very low pH.
Does a low pH indicate which of the following about the water?
a
It has high concentrations of OH- ions.
b
It has no detectable H+or OH- ions.
c
It has high concentrations of H+ ions.
d
It has equal concentrations of H+ and OH- ions.
Question 17 (1 point)
A student was assigned to take water samples from a lake near his home. He measured the pH of one of the water samples to be 6.0. Which of the following best describes this sample of water?
a
highly acidic
b
highly basic
c
slightly acidic
d
slightly basic
e
neutral
Question 18 (1 point)
Of five different laboratory solutions, the solution with the highest acidity has a pH of
a
3
b
5
c
11
d
12
e
7
Question 19 (1 point)
Substances are classified as acidic, basic, or neutral. The pH scale can be used to classify a substance. Which feature suggests that a substance is basic?
a
The pH is 7.
b
The pH is 0.
c
The pH is greater than 7.
d
The pH is less than 7.
Question 20 (1 point)
This is a pH chart of common materials.
Which substance is the most basic?
a
Cola
b
Cheese
c
Baking Soda
d
Bleach
Question 21 (1 point)
Look at the solution in the beaker below and identify the solution.
a
The solution is a weak acid.
b
The solution is a strong acid.
c
The solution is a weak base.
d
The solution is neutral
e
The solution is a strong base.
Question 22 (1 point)
On the pH scale, a pH of is neutral.
Blank 1:
Question 23 (1 point)
Which change of state does not require the addition of energy?
a
Vaporization
b
Melting
c
Condensation
d
Sublimation
Question 24 (1 point)
As a sample of water turns to ice,
a
new molecules are formed.
b
the mass of the sample is increased.
c
the arrangement of the molecules changes.
d
energy is absorbed by the molecules.
Question 25 (1 point)
Which state of matter would have the highest kinetic energy?
a
Solid
b
Gas
c
Liquid
dr bob this is a site for this but hes right this test is too big
unit 3 Properties test
Question 1 (1 point)
The material that is dissolving another material is the solvent. So, in this case, the answer is d - the material that is dissolving another material.
Question 2 (1 point)
The phase change that involves a gas turning into a liquid is condensation. So, the answer is a - condensation.
Question 3 (1 point)
If you keep a gas's temperature constant, you can increase the volume of the gas by decreasing the pressure. So, the answer is d - you would decrease the pressure.
Question 4 (1 point)
To increase the particle motion of gas without increasing any of its other properties, you would keep the gas in a fixed container at constant pressure and increase the temperature. So, the answer is b - keep the gas in a fixed container at constant pressure and increase the temperature.
Question 5 (1 point)
Supersaturation occurs when a solvent's temperature is increased to increase the dissolving amount, then cooled to a normal temperature. So, the answer is c - Supersaturation occurs when a solvent's temperature is increased to increase the dissolving amount, then cooled to a normal temperature.
Question 6 (1 point)
The acid with the highest electronegativity is HCl. So, the answer is b - HCl.
Question 7 (1 point)
The major difference between the particles in a liquid and a gas of the same substance at the same temperature is that the particles in a liquid are still connected, but the particles in a gas have separated from each other and now fly around to fill the container. So, the answer is b - The particles in a liquid are still connected, but the particles in a gas have separated from each other and now fly around to fill the container.
Question 8 (1 point)
What makes a compound an acid is that it dissolves into Hydrogen ions in water (H+ and H3O+). So, the answer is a - It dissolves into Hydrogen ions in water (H+ and H3O+).
Question 9 (1 point)
What makes a compound a base is that it dissolves into Hydroxide ions in water (OH-). So, the answer is c - It dissolves into Hydroxide ions in water (OH-).
Question 10 (1 point)
In the solution of sugar water, sugar is the solute and water is the solvent.
Blank 1: solute
Blank 2: solvent
Question 11 (1 point)
A gas becomes less soluble in a liquid when the pressure of the system is decreased. So, the answer is False.
Question 12 (1 point)
Solubility is the ability of one substance to dissolve in another. So, the answer is c - the ability of one substance to dissolve in another.
Question 13 (1 point)
As temperature increases, the solubility of a solid solute usually increases. So, the answer is True.
Question 14 (1 point)
Column A
1. Concentration: b. The amount of one substance in a certain volume of another substance.
2. Saturated Solution: c. A solution with as much dissolved solute as it can hold at a given temperature. No more solute can be dissolved.
3. Unsaturated Solution: a. A solution that holds less solute than is possible at a given temperature. More solute can dissolve.
4. Supersaturated Solution: d. A heated solution that holds more dissolved solute than is possible at a lower temperature.
Question 15 (1 point)
Based on the information in the passage, the household solution with the highest pH is club soda. So, the answer is c - club soda.
Question 16 (1 point)
A low pH indicates that the water has high concentrations of H+ ions. So, the answer is c - It has high concentrations of H+ ions.
Question 17 (1 point)
A pH of 6.0 indicates that the sample of water is slightly acidic. So, the answer is c - slightly acidic.
Question 18 (1 point)
Of the five different laboratory solutions, the solution with the highest acidity has a pH of 3. So, the answer is a - 3.
Question 19 (1 point)
A substance is considered basic if the pH is greater than 7. So, the answer is c - The pH is greater than 7.
Question 20 (1 point)
Based on the pH chart, the substance that is the most basic is baking soda. So, the answer is c - Baking Soda.
Question 21 (1 point)
Based on the image, the solution in the beaker is a weak base. So, the answer is c - The solution is a weak base.
Question 22 (1 point)
On the pH scale, a pH of 7 is neutral.
Blank 1: 7
Question 23 (1 point)
Condensation is a change of state that does not require the addition of energy. So, the answer is c - Condensation.
Question 24 (1 point)
As a sample of water turns to ice, the arrangement of the molecules changes. So, the answer is c - the arrangement of the molecules changes.
Question 25 (1 point)
The state of matter that would have the highest kinetic energy is gas. So, the answer is b - Gas.
Question 1: The correct answer is d. The solvent is the material that is dissolving another material. To determine the solvent, you would look for the substance that is doing the dissolving, rather than being dissolved.
Question 2: The correct answer is a. Condensation is the phase change that involves a gas turning into a liquid. To determine this, you would need to know the definitions of the different phase changes and their characteristics.
Question 3: The correct answer is d. To increase the volume of a gas while keeping the temperature constant, you would decrease the pressure. To determine this, you would need to understand the relationship between pressure, volume, and temperature in gas laws.
Question 4: The correct answer is b. To increase the particle motion of a gas without changing any other properties, you would keep the gas in a fixed container at constant pressure and increase the temperature. To determine this, you would need to know how temperature affects the motion of particles in a gas.
Question 5: The correct answer is c. Supersaturation occurs when a solvent's temperature is increased to increase the dissolving amount, then cooled to a normal temperature. To determine this, you would need to understand the process of supersaturation and how temperature affects solubility.
Question 6: The correct answer is c. H2SO4 would have the highest electronegativity among the given options. To determine this, you would need to know the electronegativity trends of elements and the factors that contribute to higher electronegativity.
Question 7: The correct answer is b. The particles in a liquid are still connected, but the particles in a gas have separated from each other and now fly around to fill the container. To determine this, you would need to understand the differences in particle arrangement and motion between liquids and gases.
Question 8: The correct answer is a. A compound is considered an acid if it dissolves into Hydrogen ions in water (H+ and H3O+). To determine this, you would need to know the definition of an acid and the behavior of acids in water.
Question 9: The correct answer is c. A compound is considered a base if it dissolves into Hydroxide ions in water (OH-). To determine this, you would need to know the definition of a base and the behavior of bases in water.
Question 10: In the solution of sugar water, sugar is the solute and water is the solvent. To determine this, you would need to understand the different components in a solution and their roles.
Question 11: The statement "A gas becomes more soluble in a liquid when the pressure of the system is decreased" is True. To determine this, you would need to understand Henry's law, which describes the solubility of gases in liquids.
Question 12: The best description of solubility is c. Solubility is the ability of one substance to dissolve in another. To determine this, you would need to understand the concept of solubility and how it is measured.
Question 13: The statement "As temperature increases, the solubility of a solid solute increases" is generally True. To determine this, you would need to know the general relationship between temperature and solubility for solid solutes.
Question 14:
- Concentration: b. The amount of one substance in a certain volume of another substance.
- Saturated Solution: c. A solution with as much dissolved solute as it can hold at a given temperature. No more solute can be dissolved.
- Unsaturated Solution: a. A solution that holds less solute than is possible at a given temperature. More solute can dissolve.
- Supersaturated Solution: d. A heated solution that holds more dissolved solute than is possible at a lower temperature.
Question 15: Based on the information in the passage, the household solution with the highest pH is c. club soda. To determine this, you would need to compare the colors of the cabbage indicator in different household solutions and match them with the corresponding pH values.
Question 16: A low pH indicates that the water has high concentrations of H+ ions. To determine this, you would need to understand the relationship between pH and the concentration of H+ and OH- ions in a solution.
Question 17: A pH of 6.0 indicates that the sample of water is slightly acidic. To determine this, you would need to understand the pH scale and the range of pH values for acidic, basic, and neutral substances.
Question 18: The solution with the highest acidity has a pH of 3. To determine this, you would need to compare the pH values of the different laboratory solutions and identify the one with the lowest pH.
Question 19: A feature that suggests a substance is basic is when the pH is greater than 7. To determine this, you would need to understand the pH scale and how pH values indicate the acidity or basicity of a substance.
Question 20: The most basic substance among the given options is d. Bleach. To determine this, you would need to compare the pH values of the different substances on the pH chart and identify the one with the highest pH.
Question 21: The solution in the beaker is a weak acid. To determine this, you would need to analyze the color of the solution in the beaker using the pH indicator provided and match it with the corresponding pH range for weak acids.
Question 22: On the pH scale, a pH of 7 is neutral. To determine this, you would need to know the pH values that represent acidic, basic, and neutral substances.
Question 23: The change of state that does not require the addition of energy is c. Condensation. To determine this, you would need to understand the different phase changes and their energy requirements.
Question 24: As a sample of water turns to ice, the arrangement of the molecules changes. To determine this, you would need to understand the molecular structure and behavior of water molecules during the freezing process.
Question 25: The state of matter that would have the highest kinetic energy is b. Gas. To determine this, you would need to understand the kinetic theory of matter and how it relates to the motion of particles in different states of matter.