Paints are a type of mixture called a colloid. They contain several components, including the pigment, a solvent and a binding medium. Pigments are coloured substances used in paint.
Paints are used to decorate surfaces , protect them from damage or to protect them from dirt.
Paints contain these ingredients:
- a pigment - gives the paint its colour
- a binding medium - a liquid polymer that hardens to form a continuous layer when the paint dries
- a solvent - dissolves the binding medium and makes the paint more fluid.
Emulsion paints are water-based. Their solvent is water and they dry when the water evaporates.
The pigments in oil paints are dispersed in oil, which may itself be dissolved in a solvent.
The solvent evaporates away when…