Physics
Define the term matter. What is it composed of?
Matter
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Answer
A matter is something that has mass, occupies space and can be perceived by our senses. It is composed of tiny particles called molecules.
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Related Questions
Write true of false for each statement:
(a) The temperature of a substance remains unaffected during its change of state.
(b) Ice melts at 100°C.
(c) Water at 100°C has more heat than steam at 100°C.
(d) Evaporation of a liquid causes cooling.
(e) Water evaporates only at 100°C.
(f) Boiling takes place at all temperatures.
(g) Evaporation takes place over the entire mass of the liquid.
(h) The process of a gas converting directly into solid is called vaporization.
(i) At high altitudes, water boils above 100°C.
(j) The melting point of ice is 0°C.
Match the following
Column A Column B (a) Molecules (i) water boils (b) 100°C (ii) evaporation (c) 0°C (iii) changes from solid to gas (d) At all temperatures (iv) matter (e) Camphor (v) water freezes State three properties of molecules of matter.
What do you mean by inter-molecular spaces? How do they vary in different states of matter?