is recorded
observations are listed below
Time (in minute) Temper
(1)-(11), (g) (i).
B. Short/Long Answer Questions :
Define the term matter. What is it composed
State three properties of molecules of matter.
What do you mean by inter-molecular
How do they vary in different states of
4. What is meant by inter-molecular forces
attraction ? How do they vary in solids, liqui
space
matter
0
1
2
3
4.
5
3.
o va Aw
and gases ?
5. Which of the following are correct?
From the above obs
you draw about the
(a) Solids have definite shape and defini
volume. Yrve
(b) Liquids have definite volume but no definje 15. Describe an expo
shape. True
absorbs heat
temperature
16. State (a) the
(c) Gases have definite volume but no defini
so
poir
Answers
Answer:
Matter is a thing that occupy space and has mass.It is composed of atom that is building block of matter.Its three properties are solid ,liquid and gas.Intermolecular forces (IMF) (or secondary forces) are the forces which mediate interaction between molecules, including forces of attraction or repulsion which act between atoms and other types of neighboring particles, e.g. atoms or ions.Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles.Gas is very loosely packed and can move freely anywhere.Intermolecular forces are the forces of attraction or repulsion which act between neighboring particles (atoms, molecules, or ions ). These forces are weak compared to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.The state of a substance depends on the balance between the kinetic energy of the individual particles (molecules or atoms) and the intermolecular forces. ... Increasing the pressure on a substance forces the molecules closer together, which increases the strength of intermolecular forces... (A) is right (B) Is right. 16 (c) gas:Gases do not have a definite shape or volume because the molecules in gases are very loosely packed, they have large intermolecular spaces and hence they move around. ... The particles of solid are closely packed and occupy less space while particles of gases are loosely packed and occupy the complete space available.