Curriculum
Course: Combined Science 0653 — Chemistry
time left:
:
:
Login

Curriculum

Combined Science 0653 — Chemistry

1. Experimental Chemistry

0/19

2. The Particulate Nature of Matter

0/23

3. Formulae, Stoichiometry and the Mole Concept

0/17

4. Electrolysis

0/10

5. Energy from Chemicals

0/6

6. Chemical Reactions

0/21

7. Acids, Bases and Salts

0/16

8. The Periodic Table

0/19

9. Metals

0/20

10. Air and the Environment

0/11

11. Organic Chemistry

0/24
Quiz

1.2 Chromatography – Check yourself

Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel Submit

Chromatography IGCSE Chemistry check yourself quiz: free practice for IGCSE Chemistry. Work through this Chromatography IGCSE Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 12.3 Chromatography — Notes lesson. More practice: IGCSE Chemistry — all units. Syllabus: Cambridge IGCSE Chemistry 0620 syllabus.

  • Questions count: 14
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
Which key term matches this description: "Liquid that carries the dyes up the paper."
Which key term matches this description: "Liquid that carries the dyes up the paper."
Solvent
Pure substance
Mixture
Chromatography
2.
In the sequence covered in this lesson, which step comes immediately after Solvent rises?
In the sequence covered in this lesson, which step comes immediately after Solvent rises?
Chromatogram
Ink spot
Dyes separate
Compare / Rf
3.
According to the comparison table in this lesson, what is the Common mistake of Solvent level?
According to the comparison table in this lesson, what is the Common mistake of Solvent level?
Parts of a chromatography experiment
Spot too big
Not marked
Comparing wrong heights
Above baseline
4.
Which statement best describes Solvent?
Which statement best describes Solvent?
Gives only one spot.
The paper result showing separated spots.
Liquid that carries the dyes up the paper.
Distance moved by spot ÷ distance moved by solvent.
5.
Complete the statement: Chromatography separates ______.
Complete the statement: Chromatography separates ______.
dyes
Solvent front
Baseline
Pure substance
6.
Which statement best describes Solvent front?
Which statement best describes Solvent front?
Pencil line where the sample is placed.
How far the solvent travelled up the paper.
Two or more substances not joined.
Distance moved by spot ÷ distance moved by solvent.
7.
According to the comparison table in this lesson, what is the Why it matters of Baseline?
According to the comparison table in this lesson, what is the Why it matters of Baseline?
Parts of a chromatography experiment
Carries dyes up
Identify substances
Mixture to separate
Starting point for spots
8.
Which step comes first in the sequence covered in this lesson?
Which step comes first in the sequence covered in this lesson?
Compare / Rf
Dyes separate
Ink spot
Chromatogram
9.
In paper chromatography, the Rf value is calculated as:
Distance moved by solvent ÷ distance moved by substance
Time ÷ distance
Distance moved by substance ÷ distance moved by solvent
Solvent volume ÷ spot size
10.
A locating agent is used in chromatography to:
Speed up the solvent
Heat the sample
Make colourless spots visible
Dissolve the paper
11.
Why is the start line in chromatography drawn in pencil?
Pencil adds colour
Pencil is easier to see
Ink is too expensive
Pencil does not dissolve in the solvent
12.
How is the Rf value of a spot in paper chromatography calculated?
Distance moved by solvent ÷ distance moved by spot
Distance moved by spot ÷ distance moved by solvent front
Distance moved by spot × distance moved by solvent
Distance from baseline to the top of the paper
13.
A spot moves 3.0 cm while the solvent front moves 7.5 cm. What is the Rf value?
0.40
2.5
0.75
4.5
14.
Why is the baseline in paper chromatography drawn in pencil, not ink?
Pencil is easier to see
Pencil (graphite) does not dissolve in the solvent and move up the paper
Ink would make the Rf value larger
Pencil absorbs the solvent faster
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
Part of 1. Experimental Chemistry — see every lesson and quiz in this unit.
Accepted payment methods