Separating mixtures

Question 1

Explain Filtration method

Answer 1

(Separate insoluble solid from liquid)
+ Things needed: Filter paper, Filter funnel, and a beaker placed under the filters.
+ Pour the mixture into the filter funnel, the liquid will go through and lands on the beaker. The solid remains on the filter paper, now called the residue.

Question 2

Explain Crystallization method

Answer 2

(Separate insoluble solid from liquid)
+ Things needed: Fire (Bunsen burner), a bowl contains the mixture
+ Heat the mixture until the water evaporated, leaving the crystal behind.

Question 3

Explain Distillation method

Answer 3

(Separate insoluble solid from liquid)
+ Things needed: A beaker containing the mixture, A thermometer, a burner, a condenser, and a receiving flask.
How to do:
1. Heat up the mixture
2. The water will boil, then it will travel to the condenser to change back to liquid.
3. The solid is left behind at the initial flask.

Question 4

Explain Centrifugation method

Answer 4

(Separate insoluble solid from liquid)
+ Things needed: A tube containing the mixture, and a machine that can spin very fast.
+ When spinning, the differences in masses of the solid and liquid will send the solid to the bottom of the tube, while the liquid stays at the top (more mass = harder to change the motion)

Question 5

Define miscible liquid

Define immiscible liquid

Answer 5

Miscible liquids: Liquids that can dissolve into each other

Immiscible liquids: Liquids that cannot dissolve into each other (Example: Water and oil)

Question 6

Explain Fractional distillation method

Answer 6

(Separate different dissolved liquids)

• This method is just like distillation but there’s no solid.
• Keep heating until a liquid boils. We know different liquids have different boiling points, so just by increasing the temp, each liquid will just go off at a specific temp.