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WorksheetsCLASS IX SCIENCE CHAPTER-3 ATOMS AND MOLECULES QUIZ
Total questions: 10
Worksheet time: 3mins
The Chemical Symbol for nitrogen gas is :-
Ni
N2
N+
N
The Chemical Symbol For Sodium is
So
Sd
NA
Na
Percentage Of Calcium in calcium carbonate is
40
30
48
36
In a chemical reaction, the sum of the masses of the reactants and products remain unchanged. This is called
Conservation of mass
Law of conservation of mass
Atomicity
Atomic mass
The combining power of an element is known as
Mass
Valency
Atomicity
Atomic mass
The number of atoms present in one molecule of the substance is called
Atomicity
Mass
Atomic pressure
All of the above
What is the mass of a proton and a neutron ?
1 amu
4 amu
5 amu
9 amu
Energy can neither be created nor destroyed. Its is a
Energy recreation
Energy is cannot reform
Law of conservation of energy
Law of conservation
Smallest particle of matter called
Tiny particle
Tiny molecule
Molecule
Atom
How to calculate Molecular mass
Sum of proton number and electron number
Multiplication of proton number and electron number
Sum of proton number and neutron number
Multiplication of proton number and neutron number
