Question

Which pictures below show pure substances?

Answer 1

Answer:

B and c

Explanation:

Answer 2

Answer:

The box "C" shows pure substance.

Explanation:

• Pure substances are free of any impurities that may be present in the surroundings.
• In terms of physics, pure substances are those whose constituents are the same kind of atoms or particles.

We can see in the question that the boxes are packed with two types of balls, one black, and the other white. These two kinds of balls represent two different kinds of atoms or molecules. "C" is the only box that contains only one type of ball, namely white.

Hence, the box "C" shows pure substance.

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