Lubricant - GCSE Chemistry Definition

A lubricant is a substance, like oil or grease, that is used to reduce friction between surfaces that are in contact and moving against each other. In GCSE Chemistry, you learn that reducing friction helps prevent wear and tear on machine parts, making them last longer. Lubricants can be made from natural or synthetic materials and are important in making engines, gears, and other moving parts work smoothly. They also help to cool down these parts by taking away heat, which is crucial in preventing damage and maintaining the efficiency of machines.