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- 1. Multiple Choice
Ionic bonds form between ---
nonmetals.
metals and nonmetals.
- 2. Multiple Choice
Covalent bonds form between ---
nonmetals.
metals and metals
metals and nonmetals
- 3. Multiple Choice
What are valence electrons?
sum of the protons and neutrons
protons minus electrons
electrons in the inner shells
electrons in the outer shell
- 4. Multiple Choice
Atoms that gain an electron have an electric charge of ---
-1.
-2.
+1.
+2.
- 5. Multiple Choice
If an atom has 7 protons and 7 electrons, its electric charge is ---
-7
-14
0
+7
- 6. Multiple Choice
Atoms form compounds to become more ---
reactive
stable
explosive
toxic
- 7. Multiple Choice
Atoms gain lose, gain, or ______electrons to get a stable outer energy level.
share
split
create
destroy
- 8. Multiple Choice
A _______ is the force that holds atoms together in a compound.
Chemical Formula
Chemical Reaction
Chemical Bond
Synthesis Reaction
- 9. Multiple Choice
An atom with a different number of electrons than it should have (more or less) is called an ---
isotope
valence electron
ion
octet
- 10. Multiple Choice
Which of the following is NOT a covalent bond?
K2S
H2O
I2
CO2
- 11. Multiple Choice
Which of the following is NOT an ionic bond?
NH3
KCl
K3N
NaCl
- 12. Multiple Choice
Why do chemical bonds form?
so the number of protons equals the number of electrons
to fill the outermost electron level
so an atom can become unstable
- 13. Multiple Choice
An electron has a ___ charge.
no charge
positive
negative
it depends
- 14. Multiple Choice
A proton has a ___ charge.
positive
negative
no charge
it depends
- 15. Multiple Choice
According to the Octet Rule, atoms of elements react with each other in order to attain ____ electrons in their outermost energy level or shell.
2
4
8
10
- 16. Multiple Choice
An atom of Neon complies with the Octet Rule because it has ___ electrons in its outer shell.
10
8
2
7
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