CHEM Solutions, Acids and Bases PRE/POST TEST

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Which is NOT a unique property of water?

• Frozen water floats on liquid water.
• Water covers most of the Earth’s surface and retains a large amount of heat.
• Water molecules stick to each other through hydrogen bonds.
• Water cools very rapidly.

Tags

NGSS.HS-ESS2-5

The freezing point of a solution is ___________ that of a pure solvent

• more than

• less than

• equal to

the number of solute particles are __________ to the vapor pressure lowering

• directly proportional

• Inversely proportional

• they are not related

Describe a solute.

• part of solution present in largest amount
• gets dissolved
• water
• surrounds and breaks apart

Tags

NGSS.MS-PS1-1

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

Which of the following is NOT a way to increase the rate of dissolving

• evaporation

• stirring

• increasing temperature

• using a smaller particle size

What could you do to increase the solubility of a gas?

• increase pressure

• decrease pressure

• increase temperature

• do nothing

How does a solution become supersaturated?

• dissolve lots of solute in it.
• dissolve a little solute in it. 
• dissolve more solute than you should be able to. 
• dissolve a super amount of solvent in it. 

Which solute is the most soluble at 10 ⁰C?

• KI
• KClO₃
• NH₄Cl
• NH₃