Question

differentiate between physical and chemical changes with reference to the change composition of substance and change in energy

Answer 1

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Colloidal.
it is a type of mixture in which size of solute particles is in between solution and suspension.
example.. soap solution, jelly etc
properties of colloid.
It is heterogeneous mixture but appears to be homogenous.
size of solute particles is in between solution and suspension.
particles of solute cannot be seen with naked eyes.
It is stable.
It cannot be filtered.
It show tyndall effect.