why is blood a mixture and graphit an element?

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Solution

Graphite
Blood
1. It cannot be broken down into simpler substances by physical means.
It is obtained by the physical combination of Red blood cells, plasma and body fluids.
2. The atoms of carbon present in it combine with each other in fixed ratio.
The composition of substances present in it is not fixed.
3. All the atoms graphite show identical properties.
It shows the properties of all its constituents.
4. It cannot be built from any other simpler substances by physical or chemical methods.
Its constituents can be separated using physical methods.

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Similar questions

(a) What is meant by (i) elements (ii) compounds, and (iii) mixtures? Write down the names of two elements, two compounds and two mixtures.

(b) Classify the following into elements, compounds and mixtures :

Marble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk

C a C N_{2}

N H_{3}

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Graphite	Blood
1. It cannot be broken down into simpler substances by physical means.	It is obtained by the physical combination of Red blood cells, plasma and body fluids.
2. The atoms of carbon present in it combine with each other in fixed ratio.	The composition of substances present in it is not fixed.
3. All the atoms graphite show identical properties.	It shows the properties of all its constituents.
4. It cannot be built from any other simpler substances by physical or chemical methods.	Its constituents can be separated using physical methods.