Question

give two reason for supporting that water is a compound and not a mixture

Answer 1

1) all sources of water such as seas, oceans,lakes etc contain same chemical compound i.e. H2o.
2) it is always found to be combined in a fixed ratio by mass i.e. 1:8

Answer 2

Hi friend,

Here is your answer,

Water is a compound and not a mixture because :-
1.) Water can not be separated into oxygen and hydrogen by physical methods.
2.) Water has its own properties which are different from oxygen and hydrogen.