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CAIE IGCSE Chemistry 1.1.3 Changes of state in terms of melting

CAIE IGCSE Chemistry 1.1.3 Changes of state in terms of melting
Cambridge IGCSE Chemistry 0620 syllabus for exams in 2026, 2027 and 20282026–2028

Practise changes of state by naming physical changes and using melting and boiling points to justify the state of a substance.

How this is tested

  • use melting and boiling points to deduce whether a substance is solid, liquid or gas

Question 6

[Maximum number: 2]

This question is about metals.

Question 6(b)

(a)

Zinc is produced from zinc oxide in a furnace.

The zinc is produced as a gas. It then forms molten zinc.

[ 2 ]

Question 6(b)(i)

(i)

Suggest why the zinc produced inside the furnace is a gas.

[ 1 ]

Question 6(b)(ii)

(ii)

State the name of the physical change that occurs when gaseous zinc is converted into molten zinc.

[ 1 ]