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WorksheetsCHEM Test 8 (9th) 21-22
Total questions: 20
Worksheet time: 13mins
Dalton's atomic model
Bohr's atomic model
Thomson's atomic model
Thomson's Atomic Model
Bohr'ss Atomic Model
Rutherford's Atomic Model
Dalton's Atomic Model
Rutherford's Atomic Model
Bohr's Atomic Model
Bohr's atomic model
Rutherford's atomic model
Dalton's atomic model
What letter do we use for the mass number?
Z
A
W
What letter do we use for the atomic number?
Z
A
W
An atom has
Z=6
A=14
Therefore:
it has 8 neutrons
it has 6 neutrons
it has 14 protons
An atom has
Z=3
A=7
Therefore:
it has 3 protons
it has 7 protons
it has 3 neutrons
According to the Bohr's Atomic Model energy levels are represented by
n= 1, 2, 3, 4, 5, 6, 7
l= s, p, d, f
ml= +1/2 , -1/2
A shell closer to the nucleus is of
minimum energy
maximun energy
none of the above
Inside of a shell, there are 4 subshells which are
1, 2, 3 ,4
s, p, d, f
+1/2 , -1/2, +1, -1
What are isotopes?
Atoms of an element that have same atomic number but different mass numbers.
Atoms of an element that have same mass number but different atomic numbers.
None of the above
Isotopes have _______________ physical properties because of their _______________ in the number of neutrons
different, change
same, change
different, equality
These are isotopes of
Hydrogen
Oxygen
Carbon
Some elements have radioactive isotopes
True
False
Provide 2 applications of isotopes
Explain the importance of Pauling's Diagonals
H2O
Pure Substance
Mixture
Impure Substance
Al
Compound
Element
Mixture
In the compound Cu2O
There are 2 atoms of copper and 1 atom of oxygen
There are 1 atom of copper and 2 atoms of oxygen
There are 2 atoms of copper and 2 atoms of oxygen
