Question

Write the (a) balanced equation for the formation of liquid water from hydrogen and oxygen gas, and use it to explain the following terms: (b) chemical reaction, (c) reactant, (d) product.

Answer 1

a)   2H2_(g)   + O2_(g)    ------------------->      2H2O_(l)

b)   interaction of two or more substances (elements , molecules or ions) that produces one or more new substances is called chemical reaction.

c) in chemical reaction substances which are undergoing change are called reactants   (H2 and O2 in above reaction).

d) in chemical reaction substances which are forming newly are called products (H2O in above reaction).