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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 radioactive isotope of carbon is
carbon-12
carbon-13
carbon-14
carbon-6
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Atoms and Atom Model
In element Uranium-235, the combined number of neutrons and protons is
92
235
35
200
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Atoms and Atom Model
The number and arrangement of electrons in an atom are important because it controls
the physical properties of atom
the chemical properties of atom
the size of atom
all of above
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Atoms and Atom Model
In methane gas, each carbon atom is bonded with
two oxygen atoms
two hydrogen atoms
three oxygen atoms
four hydrogen atoms
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Atoms and Atom Model
Experiment which suggested that each chemical element is made up of different atoms, was carried out by
John Green
John Dalton
Albert Einstein
Isaac Newton
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Atoms and Atom Model
To date, scientists have made about 26 millions
elements
compounds
alkalis
alkanes
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Atoms and Atom Model
The symbol of ‘magnesium’ is
Ne
Na
N
Mg
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Atoms and Atom Model
A material which is made up of one type of atom is known as
element
compound
mixture
molecule
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Atoms and Atom Model
If we remove electron from the outer shell, the atom turns
negative
positive
neutral
anti negative
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Atoms and Atom Model
Neutrons have
negative charge
positive charge
no charge
both charges
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