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Metals And Nonmetals
Test Description: Positive and negative ions
Instructions: Answer all questions to get your test result.
1) The element which has atomic number 12 is considered from
A
nonmetals
B
noble gases
C
no correct answer
D
metals
2) When an atom of an element loses 1 electron or more, it changes into
A
a negative ion.
B
a neutral atom.
C
a positive ion.
D
no correct answer.
3) All of the following elements can form positive ions except
A
sodium
B
chlorine
C
aluminium
D
magnesium
4) The number of energy levels in sodium ion is ......... the number of energy levels in its atom.
A
less than
B
more than
C
equal to
D
no correct answer
5) When an atom is changed into an ion, the ....... is changed.
A
number of neutrons
B
number of protons
C
mass number
D
number of electrons
6) The only nonmetal that exists in a liquid state is .....
A
hydrogen
B
bromine
C
nitrogen
D
chlorine
7) All of nonmetals don't conduct electricity except ......
A
aluminum
B
graphite
C
mercury
D
bromine
8) In a negative ion, the number of protons is ...... the number of electrons.
A
equal to
B
less than
C
more than
D
no correct answer
9) The number of ........ determines the type of element and its chemical activity.
A
neutrons
B
levels filled with electrons.
C
protons
D
electrons in the outermost energy level.
10) The molecule of a noble gas consists of .....
A
two different atoms.
B
one atom.
C
two similar atoms.
D
one or two similar atoms.
*select an answer for all questions
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