Unit 9 (Solutions Chemistry) Review

Mixture of two or more substances; dissolved particles are spread evenly throughout the mixture. Another term for homogeneous mixture.

• solvent

• solute

• heterogeneous mixture

• solution

What is a solute?

• The substance that does the dissolving in a solution.
• The substance that is dissolved into the solution.
• The mixing of different substances.
• The process in which neutral molecules lose or gain electrons

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

A solution that is considered unsaturated would _____.

• be dark in color.

• have a strong scent.

• have a large amount of solute.

• have a small amount of solute.

Tags

NGSS.HS-PS1-5

A solution that contains the maximum amount of dissolved solute:

• unsaturated solution

• supersaturated solution

• saturated solution

Which of the following does not increase the rate of dissolving a solid in a liquid?

• stirring the solution

• crushing up the solute

• raising the temperature

• lowering the temperature

Besides stirring, which of the following should be done to make this powder dissolve faster in the liquid?

• Add heat to the liquid

• Cool the liquid in a freezer

• Add more powder to the liquid

• Store the mixture in a dark place

Tags

NGSS.HS-PS1-5

Since "like dissolves like", water and oil will not mix because

• both of them are polar

• both of them are nonpolar

• oil is polar and water is nonpolar

• oil is nonpolar and water is polar

Use the graph to determine which of these substances is most soluble at 40 degrees Celsius.

• KCl

• KNO₃

• NaCl

• NH₃

If an electrical current can run through a solution, it is said to contain

• magic
• nonelectrolytes
• electricity
• electrolytes

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5