Which of the following is NOT a property of surfactants?

They form ionic bonds with water molecules

They increase the solubility of nonpolar substances in water

Which of the following best distinguishes a suspension from a colloid?

Particles in suspensions settle out, while those in colloids do not

Suspensions have smaller particles than colloids

Suspensions are always transparent

Colloids can be filtered easily

Which of the following is an example of hydrogen bonding?

Water molecules attracting each other

Which of the following statements about surface tension is true?

It is higher in liquids with strong intermolecular forces

It decreases with the addition of surfactants

Which of the following is a correct application of Henry’s Law?

Predicting the amount of oxygen dissolved in blood at different pressures

Explaining why sugar dissolves faster in hot water

Describing the boiling point elevation of a solution

Explaining the Tyndall effect in colloids

Which of the following is a property of a solution?

It is homogeneous at the molecular level

Particles can be seen with the naked eye

Particles settle out on standing

A student observes that adding salt to water increases its boiling point. Using your knowledge of solubility and solution properties, explain why this occurs.

The dissolved salt ions disrupt the formation of vapor, requiring more energy to boil

The salt forms a new compound with water

The salt increases the vapor pressure of water

The salt decreases the surface tension of water

You are given two clear mixtures: one scatters light and the other does not. How would you determine which is a colloid and which is a true solution?

Use the Tyndall effect to see which mixture scatters light, indicating a colloid

Observe if particles settle out over time

A sealed soda bottle is opened and bubbles form rapidly. Using Henry’s Law, explain why this happens.

The pressure above the liquid decreases, reducing the solubility of CO<katex latex="_2"></katex> and causing it to escape as bubbles

The temperature of the soda increases

A chemist wants to dissolve more gas in a liquid. According to Henry’s Law, what two changes could they make to maximize gas solubility?

Decrease temperature and increase pressure

Increase temperature and decrease pressure

Increase both temperature and pressure

Decrease both temperature and pressure

A student adds a surfactant to water and notices that oil droplets disperse more easily. Explain the role of the surfactant in this process.

It reduces the surface tension, allowing oil and water to mix more easily

It increases the surface tension of water

It forms hydrogen bonds with oil

You are given two solutions: one conducts electricity and the other does not. How would you classify them?

The one that conducts electricity is an electrolyte; the other is a non-electrolyte

Explain why water has a higher surface tension than most other liquids.

Water molecules form strong hydrogen bonds with each other

A mixture appears cloudy and its particles settle out after standing. Is this mixture a colloid or a suspension? Justify your answer.

Suspension, because suspensions have particles that settle out

Colloid, because colloids are always cloudy

Colloid, because colloids have large particles

Suspension, because suspensions are homogeneous

A solution of NaCl in water conducts electricity, but a solution of sugar in water does not. Explain why.

NaCl dissociates into ions, while sugar does not

NaCl forms covalent bonds in water

Sugar molecules ionize in water

If a non-polar solute is added to water, what is most likely to happen and why?

It will not dissolve because water is polar and cannot interact effectively with non-polar molecules

It will dissolve easily due to hydrogen bonding

It will increase the surface tension of water

A student wants to separate a colloid from a suspension. What property should they use to distinguish between the two?

Particle size and whether particles settle out

Explain why increasing the pressure above a liquid increases the solubility of a gas in that liquid, according to Henry’s Law.

Higher pressure forces more gas molecules into the liquid, increasing solubility

Higher pressure decreases the temperature of the liquid

Higher pressure breaks hydrogen bonds in the liquid

Higher pressure increases the surface tension of the liquid

Exploring Solutions and Interactions Quiz

30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best defines surface tension?

The force that holds the molecules of a solid together

The energy required to increase the surface area of a liquid

The attraction between ions in a solution

The process of dissolving a solute in a solvent

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of bond is primarily responsible for the high boiling point of water?

Ionic bond

Covalent bond

Hydrogen bond

Metallic bond

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of an electrolyte?

Sugar solution

Distilled water

Sodium chloride solution

Oil

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the term for a substance that dissolves in a solvent to form a solution?

Solute

Colloid

Suspension

Surfactant

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which law relates the solubility of a gas in a liquid to the pressure of the gas above the liquid?

Boyle’s Law

Henry’s Law

Charles’s Law

Dalton’s Law

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a super saturated solution?

A solution that contains less solute than it can hold

A solution that contains more solute than it can normally hold at a given temperature

A solution with no solute

A solution that is in equilibrium

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes a colloid?

A homogeneous mixture with particles that settle out

A heterogeneous mixture with large particles

A mixture with particles that do not settle and scatter light

A pure substance

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Exploring Solutions and Interactions

Which of the following best defines surface tension?

What type of bond is primarily responsible for the high boiling point of water?

Which of the following is an example of an electrolyte?

What is the term for a substance that dissolves in a solvent to form a solution?

Which law relates the solubility of a gas in a liquid to the pressure of the gas above the liquid?

What is a super saturated solution?

Which of the following best describes a colloid?

Which of the following is NOT a property of surfactants?

Which of the following is a non-electrolyte?

What happens to the solubility of most solid solutes as temperature increases?

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