Question

Define mixtures. Mention the different types of mixtures.

Answer 1

A mixture is a substance that is made up of two or more substances mixed together in any proportion. A mixture retains the properties of the substance from which it is formed.

Types of mixtures :

1. Based on the physical state of substances present in the mixture, the mixtures are of following types :

• Solid-solid mixture : For example a mixture of iron and sulphur filings
• Solid -liquid mixture : For example a mixture of common salt in water.
• Liquid Liquid mixture : For example a mixture of alcohol and water.
• Solid-gas mixture : For example a mixture of dust particles and gases i.e. smoke
• Liquid-gas mixture : For example aerated drinks
• Gas-gas mixture : For example air

2. Based on the distribution of two or more substances that are mixed together, mixtures can be classified as :

• Homogenous mixture : A mixture that has a uniform composition throughout is called a homogenous mixture. For example : salt in water
• Heterogenous mixture : A mixture that has a non uniform composition throughout is called a heterogenous mixture. For example : chalk powder in water