Question

both a and b
3. Fill in the blanks.
1. Substances that take part in a chemical reaction are called
and
2. A chemical equation can be represented using the
the reactants and products.
3. During a chemical reaction, atoms in the molecules of the reactants rearrange themselves to form
one or more
reaction
The evolution of gas is represented by an upwardly-directed
A chemical reaction in which heat energy is evolved is called an
Hydrogen sulphide gas smells like
Chemical reactions take place by the action of light energy are called
reactions​

Answer 1

Answer:

• 1. reactant
• 2. word equation
• 3. product