What is the colour of ferrous sulphate crystals before heating?
Subject: General Science
Topic: Chemical Reactions and Equations
Options:
- Option A: Blue
- Option B: White
- Option C: Green
- Option D: Grey
Correct Answer:
Option C: Green
Explanation:
The activity states: 'Note the colour of the ferrous sulphate crystals. ... Have you noticed that the green colour of the ferrous sulphate crystals has changed?' The green crystals (FeSO4·7H2O) lose water and change colour upon heating.