Question

You have observed that not all substances (such as salt) are completely dissolved when placed in water

what can you do to dissolve the substances

Answer 1

Answer:

mix it well with spoon.

some thing like oil which is not dissolve in water we can't do anything for that

Answer 2

Answer:

it depends upon the substsnce

Explanation:

less salt can easily dissolve but adding more salt in increasing the density of water and at a certain point salt stops getting dissolved