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Crossword Puzzle
Crossword Puzzle

7.1 Air

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7.1 Air
 

Crossword Puzzle

7.1 AirOnline version

have fun

by Chan Wai Tung
1

the layer surrounding the Earth

2

a term to describe two or more substances mixing together without the formation of a new substance

3

the group name of gases which are all unreactive

4

a molecule made of two oxygen atom and one carbon atom

5

the positive result of testing oxygen with glowing splint

6

the positive result of lime water for testing specific gas

7

the name of indicator which is red in colour originally

8

the smell of oxygen

9

an apparatus to keep things dry

10

dry ______ chloride paper

11

an equipment to put off fire by releasing gas

12

filling of balloon

7
12
8
10
9
4
3
1
11
5
6
 
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