Question

1-a form of matter Has no fixed shape but it has a fixed volum is-
a-argon
b-kerosene
c- carbon dioxide
d- steel

2- no. of valence electrons in nitrogen and phosphorus is:
a-3
b-5
c-2
d-8

3- give tow ways through which the physical state of matter can be changed?

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Answer 1

Answer: 1)  b- kerosene

2) b- 5

3) physical state of matter can be changed by changing temperature and pressure

Explanation:

Answer 2

Answer:

a)Kerosene.

b)valency=3

c)Matter can change from one state to another if heated or cooled. If ice (a solid) is heated it changes to water (a liquid). This change is called MELTING. If water is heated,it changes to steam (a gas).If solid converts its state directly to gas it is called sublimation.

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