The flavor coating on gum dissolves in your mouth but the gum does not. When you chew both chocolate and gum together they mix/dissolve with each other. This is because

gum is non-polar and chocolate is non-polar

gum is polar and chocolate is polar

gum is polar and chocolate is non-polar

gum is non-polar and chocolate is polar

gum is non-polar and chocolate is non-polar

As pressure of a gas increases, solubility __________ because __________________.

increases because the molecules are closer together

decreases because the molecules are closer together

decreases because the molecules are farther apart

increases because the molecules are farther apart

The Solubility Quiz: Chemistry Trivia!

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Quizzes Created: 20 | Total Attempts: 18,708

Questions: 10 | Attempts: 904 | Updated: Mar 22, 2023

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The Solubility Quiz: Chemistry Trivia! - Quiz

What do you know about solubility? Would you like to take this quiz? Solubility is the property of a solid, fluid, or gaseous biological material called solute to dissolve in a solid, liquid, or gaseous solvent. The solubility of a material depends on the solute and solvent's physical and chemical properties and temperature, pressure, and occurrence of other chemical properties. Taking this quiz will help you see how much you know about solubility.

Questions and Answers

1.

When 30 grams of potassium nitrate, KNO₃, is dissolved in 100 grams of water at 20 ºC, the solution can be correctly described as:
- A.
  
  Supersaturated
- B.
  
  Saturated
- C.
  
  Unsaturated
Correct Answer
C. Unsaturated

Explanation
An unsaturated solution is a solution in which more solute can be dissolved at a given temperature. In this case, only 30 grams of potassium nitrate is dissolved in 100 grams of water, which means that more potassium nitrate can still be dissolved. Therefore, the solution is unsaturated.

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2.

When NaCl is dissolved in water energy is
- A.
  
  Created
- B.
  
  Destroyed
- C.
  
  Released
- D.
  
  Absorbed
Correct Answer
D. Absorbed

Explanation
When NaCl is dissolved in water, energy is absorbed. This is because the process of dissolving NaCl in water requires energy to break the ionic bonds between the sodium and chloride ions in the solid crystal and to separate the ions from each other. This energy is obtained from the surroundings, in this case, the water. Therefore, the process of dissolving NaCl in water is endothermic and absorbs energy.

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2
0
3.

At what temperature is 40g of KNO3 saturated?
- A.
  
  10ºC
- B.
  
  25ºC
- C.
  
  30ºC
- D.
  
  40ºC
Correct Answer
B. 25ºC

Explanation
At 25ºC, 40g of KNO3 is saturated. This means that at this temperature, the maximum amount of KNO3 that can dissolve in a given amount of solvent (in this case, water) has been reached. If the temperature were to increase or decrease, the solubility of KNO3 would change, resulting in either more or less of the compound being able to dissolve.

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4.

which compound is a gas?
- A.
  
  KClO3
- B.
  
  KNO3
- C.
  
  KCl
- D.
  
  SO2
Correct Answer
D. SO2

Explanation
SO2 is a gas because it is a molecular compound composed of sulfur and oxygen atoms. In its gaseous state, SO2 exists as individual molecules that are not bonded to each other. This allows the molecules to move freely and occupy the space of the container, resulting in a gas. In contrast, KClO3, KNO3, and KCl are all ionic compounds that exist as solids at room temperature and require high temperatures to be converted into gases.

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5.

As the temperature increases, the solubility of solids ______________.
- A.
  
  Increases
- B.
  
  Decreases
- C.
  
  Stays the same
Correct Answer
A. Increases

Explanation
When the temperature increases, the kinetic energy of the solvent molecules also increases. This increased kinetic energy causes the solvent molecules to move more vigorously, which in turn disrupts the intermolecular forces holding the solute particles together. As a result, more solute particles are able to separate and dissolve in the solvent, leading to an increase in solubility.

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6.

In a solution the solute
- A.
  
  Does the dissolving
- B.
  
  Is what is dissolved
- C.
  
  Refers to the temperature
- D.
  
  Refers to the polarity
Correct Answer
B. Is what is dissolved

Explanation
The correct answer "is what is dissolved" refers to the solute in a solution. The solute is the substance that is being dissolved in the solution. It is the component that is present in a smaller quantity and gets dispersed or dissolved in the solvent. The solute can be a solid, liquid, or gas, and it is the substance that gives the solution its properties and characteristics.

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7.

The flavor coating on gum dissolves in your mouth but the gum does not. When you chew both chocolate and gum together they mix/dissolve with each other. This is because
- A.
  
  Gum is polar and chocolate is polar
- B.
  
  Gum is polar and chocolate is non-polar
- C.
  
  Gum is non-polar and chocolate is polar
- D.
  
  Gum is non-polar and chocolate is non-polar
Correct Answer
D. Gum is non-polar and chocolate is non-polar

Explanation
The flavor coating on gum dissolves in your mouth but the gum itself does not because gum is non-polar and chocolate is non-polar. Non-polar substances do not mix well with polar substances, so the gum and the chocolate do not dissolve or mix with each other when chewed together.

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8.

Grass stains will NOT come out will water alone. This means that grass stains consist of ___________ molecules.
- A.
  
  Stubborn
- B.
  
  Green
- C.
  
  Polar
- D.
  
  Non-polar
Correct Answer
D. Non-polar

Explanation
Grass stains will not come out with water alone because water is a polar molecule and grass stains consist of non-polar molecules. Non-polar molecules do not dissolve easily in water due to the difference in their polarity. Therefore, a non-polar solvent or detergent is needed to effectively remove grass stains.

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9.

As pressure of a gas increases, solubility __________ because __________________.
- A.
  
  Increases because the molecules are closer together
- B.
  
  Decreases because the molecules are closer together
- C.
  
  Decreases because the molecules are farther apart
- D.
  
  Increases because the molecules are farther apart
Correct Answer
A. Increases because the molecules are closer together

Explanation
As the pressure of a gas increases, the solubility increases because the molecules are closer together. When the pressure increases, the gas molecules are forced closer to each other, increasing the chances of interaction between the gas molecules and the solvent molecules. This leads to an increase in the solubility of the gas in the solvent.

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10.

At 80 degrees celsius, when 70g of NH4Cl is added to 100mL of water, how much NH4Cl remains at the bottom of the beaker?
- A.
  
  0g
- B.
  
  4g
- C.
  
  14g
- D.
  
  24g
Correct Answer
B. 4g

Explanation
When NH4Cl is added to water, it dissolves to form a solution. However, at 80 degrees Celsius, the solubility of NH4Cl decreases, causing some of it to precipitate and settle at the bottom of the beaker. The question asks how much NH4Cl remains at the bottom, implying that some of it has precipitated. Therefore, the correct answer is 4g, indicating that 4g of NH4Cl remains undissolved and settles at the bottom of the beaker.

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The Solubility Quiz: Chemistry Trivia!

When 30 grams of potassium nitrate, KNO3, is dissolved in 100 grams of water at 20 ºC, the solution can be correctly described as:

When NaCl is dissolved in water energy is

At what temperature is 40g of KNO3 saturated?

which compound is a gas?

As the temperature increases, the solubility of solids ______________.

In a solution the solute

The flavor coating on gum dissolves in your mouth but the gum does not. When you chew both chocolate and gum together they mix/dissolve with each other. This is because

Grass stains will NOT come out will water alone. This means that grass stains consist of ___________ molecules.

As pressure of a gas increases, solubility __________ because __________________.

At 80 degrees celsius, when 70g of NH4Cl is added to 100mL of water, how much NH4Cl remains at the bottom of the beaker?

When 30 grams of potassium nitrate, KNO₃, is dissolved in 100 grams of water at 20 ºC, the solution can be correctly described as:

As pressure of a gas increases, solubility because ________.