solutions

Question 1

Can you give an example of freezing?

Answer 1

Water turning into ice when the temperature drops below 0˚C

Question 2

Can you give an example of evaporation?

Answer 2

Wet clothes drying in the sun

Question 3

Can you give an example of sublimation?

Answer 3

vaporization of frozen carbon dioxide (dry ice) at ordinary temperature

Question 4

What is a saturated solution?

Answer 4

A solution where no more solute is able to dissolve into the solvent

Question 5

How can you increase the solubility of a solvent

Answer 5

increase the surface area - crush it to make it a powder

Question 6

How do you separate an insoluble solid from a liquid?

Answer 6

filtration

Question 7

Can you describe how to set up a chromatogram?

Answer 7

1. Draw a line near the bottom of the chromatography paper in pencil (pencil is insoluble so it won’t dissolve in the solvent)
2. Add spots of different dyes at regular intervals
3. Place the paper into a beaker of solvent - make sure the solvent in below the pencil line otherwise the inks will dissolve into the solvent
4. Place a lid on the beaker - to stop the solvent from evaporating
5. Allow the solvent to move up the paper until it is just below the top
6. Take the paper out and mark on where the solvent has reached - this is called the solvent front
7. Allow the paper to dry