Solutions and solubilities

Question 1

1. What is a solute?

2. What is the solvent?

Answer 1

1. Substance that is dissolved in the solvent

2. Dissolves the solvent (liquid part of solution)

Question 2

What forms when you cool a solution or let it sit for a long time?

Answer 2

Precipitate

Question 3

What is a precipitate?

Answer 3

A solid that comes back out of its solution due to a chemical reaction

Question 4

Why does the solute dissolve in a solvent?

Answer 4

Solvent molecules “attack” the solute and pull it apart

Question 5

What does concentration describe?

Answer 5

How much solute is present compared to the amount of solvent

Question 6

What does it mean when you say a solution is concentrated? Diluted?

Answer 6

Concentrated: a lot of solute
Diluted: little solute

Question 7

What is solubility?

Answer 7

A measure of how well a solute dissolves in a solvent at a given temperature

Question 8

What’s the difference between unsaturated, saturated, and supersaturated solutions?

Answer 8

Unsaturated: more solute can be dissolved
Saturated: maximum amount of solute is dissolved
Supersaturated: too much solute tried to be dissolved

Question 9

What are three factors that affect solubility?

Answer 9

1. Temperature
2. (size of solute molecule or attraction to solute/solvent)
3. Pressure

Question 10

What factors affect the rate of solution?

Answer 10

1. Size
2. Stirring
3. Amount of solute
4. Temperature