Chemistry
Match the following:
| Column A | Column B |
|---|---|
| (a) Smallest inter-molecular spaces | (i) Diffusion |
| (b) Random motion of particles in a liquid | (ii) Gases |
| (c) Intermixing of gaseous molecules | (iii) Intermolecular force of attraction |
| (d) Highest kinetic energy | (iv) Brownian motion |
| (e) Increases with a decrease in temperature | (v) Solids |
Answer
| Column A | Column B |
|---|---|
| (a) Smallest inter-molecular spaces | (v) Solids |
| (b) Random motion of particles in a liquid | (iv) Brownian motion |
| (c) Intermixing of gaseous molecules | (i) Diffusion |
| (d) Highest kinetic energy | (ii) Gases |
| (e) Increases with a decrease in temperature | (iii) Intermolecular force of attraction |
Related Questions
Fill in the blanks:
(a) The change of a solid into a liquid is called …………… .
(b) The process in which a solid directly changes into gas is called …………… .
(c) The change of water vapour into water is called …………… .
(d) The temperature at which a liquid starts changing into its vapour state is …………… .
(e) A gas can be changed into a liquid and then into solid by ............... its pressure and cooling .
(f) LPG cylinders contain cooking gas in ............... state at high pressure.
(g) In a chemical reaction, the total mass of the reactants is ............... to the total mass of the products.
Write whether the following statements are true or false.
(a) Matter can be created or destroyed during a chemical reaction.
(b) When a substance changes its state, its mass is also changed.
(c) In solids, the molecules can only vibrate about their mean positions. They are not free to move.
(d) In liquids, the kinetic energy of molecules is less than that of solids.
(e) In gases, the intermolecular forces of attraction are negligible.
Name the following:
(a) The substances which can flow.
(b) The intermixing of two or more substances due to their motion.
(c) The force of attraction between the particles of a substance.
(d) The substances which have a definite shape and volume.
(e) The state of matter which is highly compressible.
(f) The temperature at which a solid starts changing into a liquid.
(g) The change of vapour of a substance directly into a solid on cooling.
Give two examples for each of the following:
(a) The substances which can sublime.
(b) The substances which do not change their state on heating.
(c) The substances which can flow.