Copy the correct statements and correct the wrong statements if any:
a) Matter is anything which has mass , volume and occupies space.
b) Solid is a form of matter in which molecules are tightly packed.
c) Intermolecular force is more but intermolecular space is less in solid than in gas.
d) The process of changing solid into liquid on heating is called solidification.
e) Rainfall occurs due to change in state of matter.
Answers
Answer:
Water can take many forms. At low temperatures (below 0oC), it is a solid. When at "normal" temperatures (between 0oC and 100oC), it is a liquid. While at temperatures above 100oC, water is a gas (steam). The state that water is in depends upon the temperature. Each state has its own unique set of physical properties. Matter typically exists in one of three states: solid, liquid, or gas.
a) Matter is anything which has mass , volume and occupies space.
Correct
Matter is anything that has mass and volume (occupies space.
b) Solid is a form of matter in which molecules are tightly packed.
Correct
Particles are packed together tightly in a solid.They have very low kinetic energy.Hence,solids have a definite shape.
c) Intermolecular force is more but intermolecular space is less in solid than in gas.
Correct
The intermolecular forces are very strong in solid because the particles are tightly packed and there is no intermolecular space while gases have more intermolecular spaces due to loosely packed particles.
d) The process of changing solid into liquid on heating is called solidification.
Incorrect
The process of changing solid into liquid on heating is called melting. Solidification is the process by which liquid changes into solid on cooling.
e) Rainfall occurs due to change in state of matter.
Correct
Rainfall occurs when condensed water vapour gets too heavy and therefore,falls down as water droplets,thus indicating a change in the state of matter.
Hence, (a),(b),(c) and (e) are the correct options .
Whereas (d) is the incorrect option.