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Question
(a) What is a mixture? Give two examples of mixtures.
(b) What is meant by (i) homogenous mixtures, and (ii) heterogeneous mixtures? Give two examples of homogeneous mixtures and two of heterogeneous mixtures.
(b) What is meant by (i) homogenous mixtures, and (ii) heterogeneous mixtures? Give two examples of homogeneous mixtures and two of heterogeneous mixtures.
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Solution
(a) A mixture is a combination of two or more substances, which do not react with each other. Examples: sugar and water, sugar and sand, etc.
(b) (i) Homogenous mixtures: When two or more substances combine physically in a fixed ratio or a uniform composition, it is known as a homogeneous mixture. The homogenous mixture has no visible boundaries of separation. For e.g. Salt and water, sugar and water, etc.
(ii) Heterogeneous mixtures: When two or more substances combine in a non-uniform proportion, it is known as a heterogeneous mixture. It has visible boundaries of separation. For e.g. sand and water, oil and water, etc.
(b) (i) Homogenous mixtures: When two or more substances combine physically in a fixed ratio or a uniform composition, it is known as a homogeneous mixture. The homogenous mixture has no visible boundaries of separation. For e.g. Salt and water, sugar and water, etc.
(ii) Heterogeneous mixtures: When two or more substances combine in a non-uniform proportion, it is known as a heterogeneous mixture. It has visible boundaries of separation. For e.g. sand and water, oil and water, etc.
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