purity and formulation

a pure substance is

made up of one type of compound or element

you can tell it`s a pure substance as

it will have a specific melting and boiling point that you can check in a data book

whereas impure substances will have a range of

melting and boiling points

having impurity in a substance makes melting point… and boiling point..

decrease/increase

a formulation is

a mixture prepared using a specific formula with precise amounts of different compounds for a useful purpose

eg in paint what does solvent pigment and resin do

solvent controls viscosity runniness pigment colour and resin that colour stays

in a formulation each component contributes a

different property

formulations are useful in the pharmacy industry as

the medicine needs to be correct conc correct shelf life and affect correct body part