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Physical Science Review 5.2
Test Description: Ionic Bonds
Instructions: Answer all questions to get your test result.
1) Ions are not atoms that
A
gain electrons
B
share electrons
C
lose electrons
D
have a charge
2) what kind of atom is phosphate, (PO3)2-?
A
ion
B
charged ion
C
monoatomic ion
D
polyatomic ion
3) What is the charge of the phosphate ion, (PO3)2-?
A
-2
B
-3
C
2
D
3
4) When an atom loses an electron
A
it loses a positive charge and becomes a positive ion
B
it loses a positive charge and becomes a negative ion
C
it loses a negative charge and becomes a negative ion
D
it loses a negative charge and become a positive ion.
5) What is the charge on a hydronium ion (H30)+
A
3
B
-1
C
1
D
-3
6) ionic compounds are made of
A
2 nonmetals
B
2 metals
C
a metal and a nonmetal
D
none of the choices
7) What is the chemical formula of Rubidium Selenide?
A
Rb2Se
B
RbSe6
C
Rb6Se
D
RbSe2
8) What is the name of BF3
A
Boride Fluorine
B
Boron fluoride
C
Boron fluorine
D
Boron fluoron
9) Ionic bonds are strong so
A
ionic compounds have lower melting points
B
2 of the choices
C
it takes more energy to break them
D
ionic compounds have higher melting points
10) ionic compounds can ___________________ when _________________
A
2 of the choices
B
conduct electricity; solid
C
conduct electricity; dissolved or melted
D
not conduct electricity; dissolved or melted
*select an answer for all questions
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