Interpretation: The figure that represents a solid element needs to be identified.
Concept Introduction: Practically all of the matter in environment consists of mixtures of different substance. For example, soil; it has many forms of components, air; it has mixture of many gases, etc.
Answer to Problem 7STP
Correct answer: Option B
Explanation of Solution
Reason for correct option:
Matter that is composed of tightly packed particles, called Solid. Solids are rigid in comparison to liquids and gases and also, the have a definite shape & volume. Molecules which make up a solid are set in repeating, regularpattern and also, they are held definitely in place (can vibrate within a limited range). According to this, figure B represents a solid element.
Reasons for incorrect options:
Option A: Figure A does not satisfy the condition of solid element. So, this is an incorrect option.
Option C: Figure C does not satisfy the condition of solid element. So, this is an incorrect option.
Option D: Figure D does not satisfy the condition of solid element. So, this is an incorrect option.
Option E: Figure E does not satisfy the condition of solid element. So, this is an incorrect option.
Chapter 2 Solutions
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