Subjective Type

Give two characteristics each of: (a) Pure substances (b) Mixtures

Solution

(a) Pure substances:
A pure substance is a type of matter which is made up of a single type of particles. The constituent particles are identical in their chemical nature.
The constituent particles of a particular pure substance will always be in a fixed composition and cannot be separated using physical methods. Elements and compounds are examples of pure substances.

(b) Mixtures:
They are a type of matter formed by more than one pure substance. The constituent particles are just mixed together In different proportions to give different mixtures.
The properties exhibited by the mixture are the same as the properties exhibited by the individual constituent particles. These constituents can be fairly separated using physical techniques. Sugar solution, milk, are examples of mixtures.

SIMILAR QUESTIONS

Matter in Our Surroundings

Which of the following materials fall in the category of a pure substance? (a) Ice (b) Milk (c) Iron (d) Hydrochloric acid (e) Calcium oxide (f) Mercury (g) Brick (h) Wood (i) Air.

Matter in Our Surroundings

Why do we need to separate different components of a mixture? Give two examples.

Matter in Our Surroundings

Which of the following statement are true for pure substances? (i) Pure substances contain only one kind of particles. (ii) Pure substances may be compounds or mixtures. (iii) Pure substances have the same composition throughout. (iv) Pure Substances can be exemplified by all elements other than nickel.

Matter in Our Surroundings

Which of the following materials fall in the category of a "pure substance"?

Matter in Our Surroundings

What are the two types of pure substances? Give one example of each type.

Matter in Our Surroundings

Which of the following are 'Pure substances'? Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air

Matter in Our Surroundings

Define a pure substance. How many types of pure substances do you know?

Matter in Our Surroundings

Which of the following options is correct for the given statement: All pure substances have 1. the same physical state 2. the same colour 3. the same composition 4. a definite set of properties

Matter in Our Surroundings

Complete the statement - an element is a pure substance made up of (identical/different) atoms.

Matter in Our Surroundings

A ________ substance has only one kind of matter.

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