CAIE IGCSE Chemistry 7.3.5 Term Water of Crystallisation As the Questions
Work through real CAIE IGCSE Chemistry questions to identify hydrated salt formulae, colours and safe heating checks.
- Syllabus
- 2026–2028
- Course
- Chemistry 0620
Exam points
- define water of crystallisation in hydrated crystals
- write formulae for common hydrated salts
- recall colours and formulae of hydrated cobalt(II) chloride and copper(II) sulfate
- describe heating and checking until all water of crystallisation has been removed without overheating the salt
CAIE IGCSE Chemistry 7.3.5 Term Water of Crystallisation As the Questions question 1
[Maximum number: 1]
P is a hydrated metal salt with a blue colour. When P is heated, water is given off, leaving solid Q.
R is a hydrated metal salt with a pink colour. When R is heated, water is given off, leaving solid S.
Which row gives the name of P and the colour of S ?
name of P
colour of S
hydrated cobalt(II) chloride
blue
hydrated cobalt(II) chloride
white
hydrated copper(II) sulfate
blue
hydrated copper(II) sulfate
white
C
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