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Edexcel IGCSE Chemistry A States of Matter Questions

Practise states of matter using particle diagrams, change-of-state labels, diffusion experiments and solubility data from Edexcel questions.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • compare solid, liquid and gas particle arrangements using diagrams and descriptions
  • name state changes and add correct state symbols to simple water equations
  • calculate solubility from mass data and explain crystallisation on cooling

Covered syllabus points

1.1 States of matter1.2 State changes1.3 Diffusion and dilution1.4 Solutions terminology1.5C Solubility1.6C Solubility curves1.7C Solubility practical

Question 1

[Maximum number: 2]

This is a question about metals and their compounds.

Mercury is the only metal that is liquid at room temperature.

Describe the difference in the movement of particles in liquid mercury and in a solid metal.

Question 2

[Maximum number: 1]

Carbon dioxide changes directly from a solid to a gas without becoming a liquid.

Give the name of the change of state from solid to gas.

Question 3

[Maximum number: 6]

Question (a)

(a)

State the meaning of the term solute.

[ 1 ]

Question (b)

(b)

State the meaning of the term solvent.

[ 1 ]

Question (c)

(c)

Explain what is meant by a saturated solution.

[ 2 ]

Question (d)

(d)

A dark purple liquid is diluted by adding water.
The diluted liquid becomes a pale purple colour.
Explain the process that causes this change.
Refer to particles in your answer.

[ 2 ]
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