Question

1. Fill in the blank spaces by choosing the correct words from the following list :
List : electricity
noble gases
elements
molecule
atoms
two
fixed
heterogeneous
mixture
dissolved
evaporation
air
homogeneous
vapour
(a) An element consists of same kind of ______
(b) A compound consists of
or more kinds of _____
elements combined together in
proportion
(c) A chemical formula tells the number of various_____
present in its one_____
(d) Non-metals do not conduct_____
(e) Argon and neon are____
(f) Tap water is not a pure substance, because in addition to water, it contains____
salts and____
in it.
(g) A mixture in which its constituents are distributed uniformly, is called
mixture
(h) The properties of a
are average of the properties of its
constituents.
(1) The mixtures are
in nature, but compounds are
homogeneous in nature.
) The process of separation of liquid from a soluble salt solution, by the
of liquid and recondensation of its
in another vessel, is called distillation.​

Answer 1

1... atoms

2...two

3...Elements

4...Electricity

5...Noble gases

6...air , water

7.. homogeneous

8..heterogeneous, fixed

9...evaporation