1.

When a beam of sunlight enters a room throuth a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases )Y which are moving rapidly in a very haphazard manner. (a) What could particles X be ? (b) Name the gas (or mixture of gases) Y. (c) What is the phenomenon exhibited by particles X known as ? (d) What is causing the movement of particles X ? (e) What conclusion doed the existence of this phenomenon give us about the nature of matter ?

Answer»

When a beam of sunlight enters a room throuth a window, we can see tiny particles X suspended in a gas (or rather a mixture of gases )Y which are moving rapidly in a very haphazard manner.

(a) What could particles X be ?

(b) Name the gas (or mixture of gases) Y.

(c) What is the phenomenon exhibited by particles X known as ?

(d) What is causing the movement of particles X ?

(e) What conclusion doed the existence of this phenomenon give us about the nature of matter ?



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