Question

give two reasons for supposing that water is a compound and not a mixture​

Answer 1

Answer:

Water cannot be split into its constituents, hydrogen and oxygen, by physical methods. It can only be separated into its constituents by chemical processes. The properties of water are entirely different from those of its constituents.

Water is a compound. It contains more than one element: hydrogen and oxygen atoms are joined together

here is your answer

Answer 2

composed of 2 elements- hydrogen and oxygen..

not a mixture.. which is composed.. improperly.. in different ratio of.. element or substance..

for example you need one atom of hydrogen..

or when.. you are preparing a dish improperly.. in any quantity.. it will not make the dish instead it will.. discover an another thing . (mixture) and

mixing in proper quantity like 100 ml.. make it proper ( compound)