Question

5.
are the purest sold tot
shape.
Very Short Answer Questions:
Glve two examples of physical changes.
What happens when magnesium oxide is dissolved in water?
3. What is a chemical reaction?
What type of change is melting of wax?
5 Name the product(s) formed when iron filings react with copper sulphate solution
6. Does change in chemical properties take place during a chemical change?
Short Answer Type 1 Questions:
What is crystallisation?
2. Complete the following chemical equations:
(a) Mg +0,-
(b) MgO HO
3 What is meant by rusting of iron?
4. Why is explosion of crackers considered a chemical change!
5. Give two characteristics of a physical change.
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Answer 1

Answer:

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