Solutions And Solubility

Question 1

Define solvent

Answer 1

Liquid part of a solution

Question 2

Define solute

Answer 2

A solid that dissolves in a solvent

Question 3

Define solution

Answer 3

Mixture of a solvent and solute

Question 4

Define suspension

Answer 4

Where the solid particles are not dissolved in a liquid

Question 5

Give an example of suspension

Answer 5

Calpol

Question 6

Define miscible

Answer 6

2 LIQUIDS that mix

Question 7

Define immiscible

Answer 7

2 liquids that form layers and don’t mix

Question 8

Define mixture

Answer 8

A mix of 2+ substances that aren’t chemically bonded

Question 9

Define saturated

Answer 9

When you have dissolved the most possible solute

Question 10

Describe how solute and solvent particles mix

Answer 10

They collide. The solvent particles surround the solute particles, eventually making them spread evenly through the solvent.

Question 11

Is dissolving a physical or chemical change and why?

Answer 11

It is a physical change because only the state of matter has changed

Question 12

Why is the matter the same in a solution as the solute and solvent separately?

Answer 12

Because no matter is lost, the solute is still there but isn’t visible.

Question 13

Give examples of how to speed up dissolving (3)

Answer 13

• stirring
• heating
• decreasing the particle size of the solid

Question 14

Is when crystals appear a saturated solution?

Answer 14

Yes, after the saturation point is reached, the solute precipitates and makes crystals

Question 15

How does temperature effect the solubility of gas

Answer 15

It decreases because as the gas particles’ kinetic energy increases, they escape the attraction of the solvent molecules and return to gas

Question 16

Does higher temperature = higher solute solubility?

Answer 16

Yes

Question 17

What does lower temperature =?

Answer 17

Lower solubility

Question 18

What does less solvent = ?

Answer 18

Higher solubility