Question

Answer the following questions:
1. Fill in the blanks:
a) The taste of water is due to the ..impurities in it. (suspended/ dissolved)
b) The boiling point of a liquid .due to the presence of dissolved impurities
in it. (decreases/increases)
c) .......model of an atom was somewhat like that of the solar system.
(Rutherford's / Bohr's)
2. State whether true or false:
a) Freezing point of water is same as the melting point of ice.
b) Alpha particles are negatively charged.
c) Rutherford's model failed to explain the stability of an atom.
d) Sodium chloride is a covalent compound.
e) Helium is the only noble gas with a duplet structure.
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Answer 1

Answer:

1 a)dissloved

b).increase

c).Bohr's

2 a)True

b)False

c)True

d)True

e)True