Page 6 - ACE YR IGCSE A TOP APPROACH TO CHEM
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(c) What is the physical state of region AB?
[1]
(d) If an impure bromine is used, what would happen to the line of the graph?
[1]
(e) Describe the arrangement of particles in region EF.
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[2]
[Total: 8]
2 All metals and non-metals change state.
(a) Calcium is a metal that will change from solid to liquid and then gas.
Melting A
Solid calcium Liquid calcium Gas calcium
Freezing B
(i) State the process each represented by A and B.
A:
[1]
B:
[1]
(ii) Describe, based on the kinetic particle theory, the arrangement and separation of the
particles in the liquid calcium.
[2]
(iii) State two physical properties of gas calcium.
[2]
(b) Chlorine is a green gas that melts at –100°C and boils at –34°C.
(i) Describe the arrangement and movement of particles in chlorine gas.
[3]
Chapter 1 States of Matter 3
Chapter 1.indd 3 3/4/22 11:57 AM
