Some compounds are not found naturally - they are synthesised in chemical factories.
Synthesised chemical groupExample of chemicalExamples of use Food additives Aspartame Sweetening food Fertilisers Ammonium nitrate Improving crop yields Dyestuffs Procion Colouring clothing Paints Emulsion paint Decorating homes Pigments Titanium oxide Making white paint Pharmaceuticals Aspirin Relieving pain
Corrosive-Concentrated solutions of strong acids and strong alkalis are labelled with the 'corrosive' symbol. Anyone using a corrosive substance should wear gloves and eye protection, such as goggles or a face shield.
Toxic -Very poisonous chemicals are labelled with the 'toxic' symbol. Anyone who uses a toxic chemical needs to take great care. They should wear gloves and eye protection, and they may wear a mask…