Q: Which equation correctly represents the calculation of concentration in terms of mass/volume?

$$C = \frac{\text{mass of solute}}{\text{volume of solution}}$$

Question 1

Which of the following best describes a solution in chemistry?

Accepted Answer

A homogeneous mixture of two or more components with a uniform composition.

Question 2

In the process of solution formation, which term refers to the substance present in the smaller amount?

Accepted Answer

Solute

Question 3

If 10.0 g of NaCl is dissolved in 500.0 mL of water, which is the solute and which is the solvent?

Accepted Answer

Solute: 10.0 g NaCl; Solvent: 500.0 mL water

Question 4

Which of the following is a correct definition of concentration in a solution?

Accepted Answer

A measurement of the amount of solute in a given solution.

Question 5

Which of the following mixtures is classified as a suspension?

Accepted Answer

A mixture where large particles settle out over time and can be separated by filtration.

Question 6

Which property distinguishes a colloid from a suspension?

Accepted Answer

Colloids have particles that do not settle out and cannot be separated by filtration.

Question 7

Given three containers: one with clear liquid, one with cloudy liquid that settles, and one with cloudy liquid that does not settle, which represents a solution, suspension, and colloid respectively?

Accepted Answer

Solution: clear liquid; Suspension: cloudy liquid that settles; Colloid: cloudy liquid that does not settle

Question 8

Which of the following is an example of a colloid found in everyday life?

Accepted Answer

Milk

Question 9

A student mixes sand and water in a beaker. After a few minutes, the sand settles to the bottom. What type of mixture is this?

Accepted Answer

Suspension

Question 10

Which of the following statements is true regarding solutions?

Accepted Answer

The solute is the substance that is dissolved in the solvent.

Question 11

Which equation correctly represents the calculation of concentration in terms of mass/volume?

Accepted Answer

$$C = \frac{	ext{mass of solute}}{	ext{volume of solution}}$$

Question 12

Which of the following best describes a homogeneous mixture?

Accepted Answer

A mixture with a uniform composition throughout.

Question 13

Which of the following is NOT a characteristic of a suspension?

Accepted Answer

Particles remain evenly distributed and do not settle.

Question 14

A nurse prepares a saline solution by dissolving 9.0 g of NaCl in 1.0 L of water. What is the concentration in $$	ext{g/L}$$?

Accepted Answer

$$9.0\ 	ext{g/L}$$

Question 15

Which mixture type would best describe blood plasma?

Accepted Answer

Colloid

Question 16

Which of the following is a correct statement about the Tyndall effect?

Accepted Answer

It is the scattering of light by particles in a colloid.

Question 17

A student observes that a mixture does not settle and cannot be separated by filtration, but scatters light. What type of mixture is this?

Accepted Answer

Colloid

Question 18

Which of the following is a real-world example of a suspension?

Accepted Answer

Muddy water

Question 19

Which statement correctly compares solutions, suspensions, and colloids?

Accepted Answer

Solutions are homogeneous, suspensions are heterogeneous with settling particles, and colloids are heterogeneous but do not settle.

Question 20

If a mixture is transparent and does not scatter light, what type of mixture is it most likely to be?

Accepted Answer

Solution

Solutions, Mixtures, and Colloids: Key Concepts in GOB Chemistry

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