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questions & answers.
Q1.
Explain the meaning of the term 'matter'.
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Matter is defined as anything that has mass and takes up space.
Q2.
Matter in any state is composed of small particles - molecules, atoms or ions. Differentiate the terms above in italics.
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answer not shownQ3.
Differentiate between the two characteristics of matter - 'mass' and 'weight'.
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'Mass' is a measure of the matter in an object while 'weight' is a measure of gravity’s pull on an object.
Q4.
State which of the three states of matter i.e. solids, liquids or gases - have
(a) No definite volume (b) A definite shape (c) High density (d) No free surfaces
(e) Particles - which diffuse very easily.
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Solids: have a definite shape, have high density.
Gases: no definite volume, no free surfaces, particles diffuse very easily.
Q5.
State the main postulates of the kinetic theory with special reference to -
(a) Inter - particle space (b) Inter-particle attraction (c) Energy possessed by particles of matter.
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