Question

give two reasons to support the fact that water is a compound not a mixture?

Answer 1

WATER IS A COMPOUND AND NOT A MIXTURE BECAUSE

1 In a COM POUND the constituent elements

are in a fixed proportion whereas in a mixture it is necessarily notn so In water Hydrogen and Oxygen are in a definite ratio ie 2 : 1 volumetrically and 1:8 by weight

2 While forming a compound a chemical reaction necessarily takes place but it is not so while forming a mixture Here water is formed because of a chemical reaction between Hydrogen and Oxygen

2H2 + O2 = 2 H2O

Answer 2

elements if water molecules have a fixed proportion for formation