Question

SHORT/LONG ANSWER QUESTIONS:
Define physical changes with two examples.
Give reasons for the following:-
1.
2. Define chemical changes with two examples.
what happens when a solid is heated?
How can matter be classified on the basis of their physical state?
3.
5.
6.
a) Water is considered as matter.
b) Gases can be compressed easily.
c) Solids do not flow.
d) Melting of wax is a physical change.
in which state of matter will the molecules possess higher intermolecular force?
7. Define matter Under what conditions do solids liquids, and gases change their state?
8. Classify the following into solid;liquid and gas :-
coal,kerosene, wood, oxygen, sugar, blood, air, milk, wax
State two differences between physical and chemical changes.
10. State whether the following are physical and chemical changes :-
a) burning of sugar
b) heating of water
c) lightning
d) mixing of oil with water
e) boiling of an egg
9.​

Answer 1

Answer:

2.A change in which one or more new substances are formed is called a chemical change. ... Examples are burning of any substance, rusting of iron.

Explanation:

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