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Atoms and Atom Model
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Atoms and Atom Model
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Atoms and Atom Model
The atomic number of helium is
1
2
3
4
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Atoms and Atom Model
The isotope of uranium (Uranium-238) contains
141 neutrons
142 neutrons
146 neutrons
149 neutrons
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Atoms and Atom Model
Electrons revolve around the nucleus as fast as
sound in air
sound in liquid
sound in solid
sound in light
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Atoms and Atom Model
An atom of ‘hydrogen’ has
one proton and one electron
one proton, one neutron and one electron
one proton and one neutron
one electron and one neutron
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Atoms and Atom Model
‘Helium’ is a monoatomic gas and its chemical formula is
He
2
He
2
He
H
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Atoms and Atom Model
The symbol of ‘Carbon’ is
Bo
C
N
Br
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Atoms and Atom Model
‘Atom’ is a
Latin word
French word
Greek word
Roman word
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Atoms and Atom Model
A large amount of heat is produced in power plants when energy is released which turns
black rods into orange
water into steam
ice into water
acid into alkali
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Atoms and Atom Model
Radioactive particles give off
waves
rays
energy
light
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Atoms and Atom Model
Sodium ion has
positive charge
negative charge
no charge
may be positive or negative
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