94 Write the differences between pure substances and mixtures.

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Solution

Pure substances Mixtures
1. Pure substances contain only a single type of substance. 1. Mixtures contain two or more substances.
2. Pure substances cannot be separated into other substances by physical methods. 2. Mixtures can be separated into components by physical methods
3. Due to a single type of substance, the composition remains the same throughout. 3. Due to many types of substance, the composition is different throughout and cannot be bonded chemically.
4. Hydrogen, pure water, gas, etc are examples of pure substances. 4. Sugar, soil, and sand are some examples of mixtures.
5. They have their own definite properties. 5. Mixture shows the properties of its components.

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Similar questions

Write answers to the following questions.

(a) How are properties of substances determined?

(b) Explain the differences between compounds and mixtures.

(d) Why are substances classified?

Difference between :

(a) Pure and impure substances

(b) Homogeneous and heterogeneous substances

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Pure substances	Mixtures
1. Pure substances contain only a single type of substance.	1. Mixtures contain two or more substances.
2. Pure substances cannot be separated into other substances by physical methods.	2. Mixtures can be separated into components by physical methods
3. Due to a single type of substance, the composition remains the same throughout.	3. Due to many types of substance, the composition is different throughout and cannot be bonded chemically.
4. Hydrogen, pure water, gas, etc are examples of pure substances.	4. Sugar, soil, and sand are some examples of mixtures.
5. They have their own definite properties.	5. Mixture shows the properties of its components.