To make a solute dissolve more quickly i n a solvent which would you do?

Put it in warm water and stir it

Put it in cold water and stir it

An unsaturated solution is one that....

contains less solute than a saturated solution.

contains the maximum amount of dissolved solute.

contains more solute than a saturated solution.

is the amount of a substance required to form a saturated solution.

Students are asked to make statements about the solubility graph above. Which student does the best job of communicating the general features of the graph?

The solubility of most salts increases with increasing temperature.

Most salts require 100 grams of water in order to dissolve completely.

Table salt has the average solubility of all salts.

Most curves show a decreasing slope as the temperature rises.

Which of the following would decrease the rate of solution when dissolving a solid in water?

Raise the temperature of the solution

If you add more sugar to tea that is already saturated (without changing the temperature):

the sugar will fall out of the solution

some of the sugar will dissolve

Which statement best describes the relationship between water temperature and solubility for the substances shown in the graph?

As water temperature increases, solubility increases.

As water temperature increases, solubility decreases

As water temperature increases, solubility increases and then decreases

As water temperature increases, solubility decreases and then increases.

After a solid is added to a liquid, it is found that all of the substances are spread out evenly. This combination of substances is best described as

neither a mixture nor a solution

The rate of solubility of a solid in a liquid can be increased by

decreasing the surface area of the solid

Sand and iron particles that are similar in size and color are mixed together in a beaker. What method can be used to separate these particles?

Pour the mixture into a filter.

Solutions and Mixtures Worksheet

Authored by Charles Martinez

Chemistry

7th - 8th Grade

NGSS covered

Used 7+ times

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59 questions

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is a solvent?

The substance that does the dissolving in a solution.

The substance that is being dissolved in a solution.

The mixing of different substances.

The process in which neutral molecules lose or gain electrons

MULTIPLE CHOICE QUESTION

1 min • 1 pt

This is the part of a solution that dissolves

Solute

Solvent

Solution

Mixture

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The concentration of a mixture can be increased in which of the following ways?

Heating the mixture

Adding more water “solvent”

Adding more powder “solute”

Stirring the mixture

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the above picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

stir the powder in the liquid

freeze the mixture

add more powder to the liquid

store the mixture in a dark place

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A solution that is considered dilute would be....

Dark in color

Have a strong scent

Have a large amount of solute

Have a small amount of solute

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

salt water is a

compound

element

heterogeneous mixture

solution

MULTIPLE CHOICE QUESTION

1 min • 1 pt

what a solute dissolves in

solvent

mixture

solute

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