Elements are the______ form of pure substances.

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Elements are the simplest form of pure substances.

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Chapter 3 Matter Around Us
Evaluation | Q II. 7. | Page 38

Define mixture.

Name the technique that you use if only the solid component of a solution is required.

Tick the most appropriate answer.

How many times is a proton heavier than an electron?

State four differences between compounds and mixtures.

Define Elements.

Give two examples of Noble gases.

Name: A form of carbon used as a gem

Explain the difference between Atoms and molecules.

Give a reason for the following statement:

Components in a mixture are present in varying proportions and not in a fixed proportion.

State why brass is considered as a homogenous mixture while a mixture of iron & sulphur – heterogenous.