Question

B Fill in the blanks using the correct words.
1. A change in which the composition of a substance changes is called
(physical change/chemical change)
2. The number of atoms that make up a molecule of an element is called
.(atomicity/valency)
3. The symbolic representation of the composition of a chemical compound is called its
(chemical formula/atomicity)
4. Salt obtained from sea water can be purified by the process of
(crystallization/galvanization)
5. The chemical substances that participate in a chemical reaction are called
(reactants/products)​

Answer 1

Answer:

1. Chemical Change

2. Atomicity

3. Chemical Formula

4. Crystallization

5. Reactants

Answer 2

Answer:

1. chemical change

2. atomicity

3. chemical formula

4. crystallization

5. reactants

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