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3.1 States of matter

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Question 4
F

Gallium is a metal that melts when it is held in a person's hand. The table shows the melting points and boiling points of gallium and mercury.

MetalMelting point / °CBoiling point / °C
gallium302400
mercury−39357
a.i.

Give the state of gallium at:

20 °C

[1]
a.ii.

37 °C

[1]
b.

Explain why a piece of gallium melts when it is held in a person's hand. The temperature of the hand is 37 °C.

[2]
c.

Calculate the range of temperature over which gallium is a liquid.

[1]
d.

Thermometers contain a liquid metal. Evaluate whether gallium or mercury would be better as the liquid in a thermometer. Use the data in the table.

[3]
Markscheme

3.1 States of matter Questions

  1. GCSE
  2. /Chemistry
  3. /3.1 States of matter

53 exam-style questions on Edexcel GCSE Chemistry 3.1 States of matter, covering 3.1.1 The three states of matter and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.

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