11. State four properties of a mixture.
11. State four properties of a mixture.
Mixture:
A mixture is a physical blend of two or more substances that preserve their identities and are blended in the form of solutions, suspensions, or colloids.
PROPERTIES OF A MIXTURE:
1. Variable composition: Constituents of a mixture can be present in any ratio i.e., their amounts are not in a fixed ratio. For example, a mixture of salt and sugar can be prepared by mixing 1 g of salt with 2 g of sugar, or 1 g of salt with 1 g of sugar.
2. Physical change: The constituents of a mixture do not bind to each other chemically. They are loosely held together and retain their individual properties. For example, in the mixture of salt and sugar, their particles do not bind each other chemically.
3. No specific properties: The properties of a mixture are the averaged-out properties of the constituents of the mixture. For example, in the mixture of salt and sugar, the mixture dissolving in water tastes both sweet and salty. Thus, they can be easily recognised.
4. Homogeneity: A mixture can be homogeneous or heterogeneous. For example, a mixture of common salt and water is homogeneous whereas the mixture of salt and sugar is heterogeneous.
Mixture:
A mixture is a physical blend of two or more substances that preserve their identities and are blended in the form of solutions, suspensions, or colloids.
PROPERTIES OF A MIXTURE:
1. Variable composition: Constituents of a mixture can be present in any ratio i.e., their amounts are not in a fixed ratio. For example, a mixture of salt and sugar can be prepared by mixing 1 g of salt with 2 g of sugar, or 1 g of salt with 1 g of sugar.
2. Physical change: The constituents of a mixture do not bind to each other chemically. They are loosely held together and retain their individual properties. For example, in the mixture of salt and sugar, their particles do not bind each other chemically.
3. No specific properties: The properties of a mixture are the averaged-out properties of the constituents of the mixture. For example, in the mixture of salt and sugar, the mixture dissolving in water tastes both sweet and salty. Thus, they can be easily recognised.
4. Homogeneity: A mixture can be homogeneous or heterogeneous. For example, a mixture of common salt and water is homogeneous whereas the mixture of salt and sugar is heterogeneous.
