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