in a liquid, move within its boundary.

in solid, liquid and gas, move freely anywhere.

in a solid, move freely within its boundary.

in a gas, move only within its boundary.

Match the following : Column A Column B (a) A molecule is (i) does not exist free in composed of nature. (b) Ice, water and (ii) can vibrate only up to water vapour about 10 - 10 m from their mean positions. (c) An atom (iii) atoms. (d) Gases (iv) are the three states of water. (e) The molecules of a solid (v) occupy space

(a) A molecule is - (iii) atoms. Matter is composed of a very large number of tiny particles known as atoms. A molecule is made up of one or more than one atoms of the same kind or of different kinds. (b) Ice, water and water vapour - (iv) are the three states of water. Water can exist in all the three states, ice (solid state), water (liquid state) and steam (gaseous state). (c) An atom - (i) does not exist free in composed of nature. Most of the atoms cannot exist freely in nature. A molecule can exist freely in nature. (d) Gases - (v) occupy space There is a negligible force of attraction between the molecules of a gas, so they are free to move in the entire space available to them. (e) The molecules of a solid - (ii) can vibrate only up to water vapour about 10 - 10 m from their mean positions. The molecules of a solid can vibrate only up to water vapour about 10 - 10 m from their mean positions. The molecules vibrate on either side of their mean positions but they do not leave their positions. Therefore, solids have a definite size. Column A Column B (a) A molecule is (iii) atoms. (b) Ice, water and water vapour (iv) are the three states of water. (c) An atom (i) does not exist free in composed of nature. (d) Gases (v) occupy space (e) The molecules of a solid (ii) can vibrate only up to water vapour about 10 - 10 m from their mean positions.

A molecule is the simplest and smallest particle of a substance that is capable of independent existence. A molecule is defined as the smallest unit of a compound that contains the chemical properties of the compound. A molecule is made up of one or more than one atom of the same kind or different kinds.

E M B I B E

Concise Physics Middle School for Class 6>Chapter 1 - Matter>TEST YOURSELF>Q 3

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The diameter of a molecule is approximately

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Important Questions on Matter

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Concise Physics Middle School for Class 6>Chapter 1 - Matter>TEST YOURSELF>Q 3

The inter-molecular forces are strongest in

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Concise Physics Middle School for Class 6>Chapter 1 - Matter>TEST YOURSELF>Q 3

The molecules

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Concise Physics Middle School for Class 6>Chapter 1 - Matter>TEST YOURSELF>Q 3

Solids are

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Concise Physics Middle School for Class 6>Chapter 1 - Matter>TEST YOURSELF>Q 3

The inter-molecular forces in liquids are

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Concise Physics Middle School for Class 6>Chapter 1 - Matter>TEST YOURSELF>Q 4

Match the following :

Column A	Column B
(a) A molecule is	(i) does not exist free in composed of nature.
(b) Ice, water and	(ii) can vibrate only up to water vapour about $10^{- 10} m$ from their mean positions.
(c) An atom	(iii) atoms.
(d) Gases	(iv) are the three states of water.
(e) The molecules of a solid	(v) occupy space