Language of chemistry
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1
What is a chemical change?
A change which alters not only the the specific property of matter , but also changes its composition is called chemical change
2
What is the colour if Carbon dioxide?
Colourless
3
Which gas turns red litmus paper blue?
Ammonia
4
Which gas burns with a pop sound?
Hydrogen
5
Which is a foul smelling gas?
Hydrogen sulphide
6
What is the colour of lead monoxide?
Yellow
7
What is the colour of coper carbonate?
Green
8
Colour of potassium iodide?
colourless
9
Colour of lead acetate?
colourless
10
Colour of lead iodide?
Yellow
11
Colour of Silver chloride?
White
12
Colour of :-
SILVER NITRATE
SODIUM CHLORIDE
SODIUM NITRATE
SILVER NITRATE
SODIUM CHLORIDE
SODIUM NITRATE
All are colourless
13
Colour of ferrous hydroxide?
Dirty green
14
What is the initial energy uesd in heating magnessium?
Energy of activation
15
How does Magnessium ribbion burns?
It burns with a dazzling flame
16
What is the chemical name of quick lime?
Calcium oxide
17
What is formed after heating sodium bicarbonate?
It swells to form sodium carbonate.
18
A gas which smells like rotten egg?
hydrogen sulphide
19
Which gas turns lime water milky?
Carbon dioxide
20
What are reactants?
The substances which take part in a chemical reaction
21
What are products?
The substances formed as a result of a chemical reaction
22
What is a Chemical equation?
It is a statment that describes a chemical change in terms of symbols and formulae
23
What is a balanced equation?
It is a equation in which the number of atoms on the reactants side is equal to the number of atoms in the products side
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