Separating Mixtures

Question 1

Give an example of a pure element?

Answer 1

Anything from the periodic table eg. Helium.

Question 2

Give an example of a pure compound?

Answer 2

Water (H2O)

Question 3

Define Mixtures?

Answer 3

More than one substance that are not chemically combined together.

Question 4

What can a mixture be made up of?

Answer 4

Any number of different particles in any amount.

Question 5

What is the definition of a physical change?

Answer 5

A change that does NOT require a chemical reaction and does not produce a new substance.

Question 6

Define dissolved?

Answer 6

When a substance is added to water and disappears we say it has dissolved.

Question 7

What is it called when a solid is added to water and does not dissolve?

Answer 7

Insoluble.

Question 8

What is it called when a a solid dissolves in water and a mixture is formed?

Answer 8

Solution.

Question 9

What is the solid that dissolves called?

Answer 9

Solute.

Question 10

What is the liquid the solid dissolves in called?

Answer 10

Solvent.

Question 11

Is a solute pure?

Answer 11

Yes.

Question 12

Is the solvent pure.

Answer 12

Yes.

Question 13

What is the Solution called?

Answer 13

A mixture.

Question 14

What does Sodium Chloride begin as in experiment 4.1?

Answer 14

Small, solid, white crystals.

Question 15

Wha did the sand begin as in experiment 4.1?

Answer 15

Small, solid, beige grains.

Question 16

What did the copper sulfate begin as?

Answer 16

Small, solid, blue crystals.

Question 17

What happened to the sodium chloride when put in water?

Answer 17

It dissolved.

Question 18

What happened to the sand when it was put in water?

Answer 18

It was insoluble.

Question 19

What happened to the copper sulfate when put in water?

Answer 19

It dissolved and turned the colourless liquid blue.

Question 20

What happened when the copper sulfate was poured through the filter funnel?

Answer 20

Nothing it just went through the filter paper.

Question 21

What happened to the salt water when heated in the evaporating basin?

Answer 21

It had evaporated all the water leaving only the salt crystals.

Question 22

Could the solvent be collected using this method?

Answer 22

No.

Question 23

What happened when we heated the conical flask with the delivery tube in?

Answer 23

The water started to evaporate condensing in the delivery tube and dropping out as water.

Question 24

What is this process called?

Answer 24

Very simple distillation.

Question 25

What is the essential part of the more complicated distillation method?

Answer 25

Leibig Condenser.

Question 26

True or False? The Leibig Condenser has an outer jacket?

Answer 26

True.