Question

Which material is a pure substance? *

brick

iron

milk

wood

​

Answer 1

Answer:

Explanation:

IRON(Fe) is a pure substance that can be obtained from nature

Answer 2

Answer :

Which material is a pure substance? 

a) brick

b) iron (✔)

c) milk

d) wood

ExPlanation :

Let us understand , that why the following things like brick, milk and are not pure substance. $\;$

★ Brick

• It can be a pure substance because it contains more than one kind of matter.

★ Milk

• Milk also contains more than one substance like fat, carbohydrates , calcium etc.

★ Wood

• It is also not pure because it composed of compounds such as cellulose, hemicelluloses and they made up of elements such as carbon, hydrogen etc.

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