C1 Core knowledge (Part 2)

Question 1

What is a mixture?

Answer 1

Two or more elements or compounds not chemically bonded

Question 2

What is a compound?

Answer 2

Two or more elements chemically bonded

Question 3

Name the separation process in the image

Answer 3

Distillation

Question 4

Name the separation process in the image.

Answer 4

Filtration

Question 5

In the filtration process, what is the substance in the bottom of the conical flask called?

Answer 5

Filtrate

Question 6

In the filtration process, name the substance that stays in the filter paper

Answer 6

Residue

Question 7

Name the separation process in the image

Answer 7

Chromatography

Question 8

Why is a pencil used to draw the line on chromatography paper?

Answer 8

Pencil doesn’t smudge whereas ink would smudge.

Question 9

Name the piece of glass equipment used to stir solute in a solvent

Answer 9

stirring rod

Question 10

Name the equipment in the image

Answer 10

beaker

Question 11

Name the metal piece of equipment used to put solute into a solvent

Answer 11

spatula

Question 12

Name part ‘a’

Answer 12

funnel

Question 13

Name part ‘b’

Answer 13

filter paper

Question 14

Name part ‘c’

Answer 14

residue

Question 15

Name part ‘d’

Answer 15

conical flask

Question 16

Name part ‘e’

Answer 16

filtrate

Question 17

Does the image below represent an element, compound or mixture?

Answer 17

Element

Question 18

Does the image below represent an element, compound or mixture?

Answer 18

Compound

Question 19

How many dots would a ‘pure’ substance leave on chromatography paper?

Answer 19

one