Chemistry
Write whether the following statements are true or false.
(a) Solids can diffuse very fast.
(b) The quantity of matter in an object is called volume.
(c) Atoms combine to form molecules.
(d) Particles of matter can move because they possess kinetic energy.
(e) When a liquid is heated, it solidifies.
Related Questions
Assertion (A) — A piece of wood is a hard solid, while that of chalk is a soft solid.
Reason (R) — In solids, the intermolecular forces of attraction are very strong.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Fill in the blanks:
(a) Air is a matter because it has …………… and …………… and it can be …………… .
(b) The molecules are made up of …………… .
(c) The quantity of matter in an object is called its …………… .
(d) The state of matter with definite volume and definite shape is called …………… .
(e) The substances which can flow are called …………… .
Match the following:
Column A Column B (a) Fluids (i) space between the molecules (b) Melting point (ii) change of state from gas to liquid (c) Atoms (iii) substances which can flow (d) Intermolecular space (iv) the smallest particles of matter (e) Condensation (v) the temperature at which a solid changes to a liquid Classify the following into solid, liquid and gas:
Coal, kerosene, wood, oxygen, sugar, blood, water vapour, milk, wax.