1What 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
2What is the colour if Carbon dioxide?
Colourless
3Which gas turns red litmus paper blue?
Ammonia
4Which gas burns with a pop sound?
Hydrogen
5Which is a foul smelling gas?
Hydrogen sulphide
6What is the colour of lead monoxide?
Yellow
7What is the colour of coper carbonate?
Green
8Colour of potassium iodide?
colourless
9Colour of lead acetate?
colourless
10Colour of lead iodide?
Yellow
11Colour of Silver chloride?
White
12Colour of :-
SILVER NITRATE
SODIUM CHLORIDE
SODIUM NITRATE
All are colourless
13Colour of ferrous hydroxide?
Dirty green
14What is the initial energy uesd in heating magnessium?
Energy of activation
15How does Magnessium ribbion burns?
It burns with a dazzling flame
16What is the chemical name of quick lime?
Calcium oxide
17What is formed after heating sodium bicarbonate?
It swells to form sodium carbonate.
18A gas which smells like rotten egg?
hydrogen sulphide
19Which gas turns lime water milky?
Carbon dioxide
20What are reactants?
The substances which take part in a chemical reaction
21What are products?
The substances formed as a result of a chemical reaction
22What is a Chemical equation?
It is a statment that describes a chemical change in terms of symbols and formulae
23What 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