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WorksheetsAtoms and Molecules
Total questions: 9
Worksheet time: 9mins
Name
Class
Date
1.
If an atom has, say, 93 protons, then how many electrons will be present?
a)
93
b)
92
c)
46
d)
94
2.
Which of the following atoms are man-made?
a)
Plutonium
b)
Uranium
c)
Hydrogen
d)
Helium
3.
Which molecule contains 2 oxygen atoms, 1 carbon atom, but is still bad for the environment?
(a)
4.
Which is the biggest natural atom ?
(a)
5.
Which is, in your opinion, the greatest atom of all? (No, this is a open ended question, so this answer doesn't count)
4 lines
6.
Who discovered radioactive materials?
a)
Radiumiul Franco
b)
Marie Curie
c)
Gandhiji
d)
Ernest Rutherford
7.
(a) is harmful for the environment. Clue: most of it is man-made
8.
This gas covers most of Uranus
a)
Methane
b)
Oxygen
c)
Carbon Dioxide
d)
Iron Oxide
9.
Is Chlorine an atom or a molecule?
a)
Atom
b)
Molecule
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