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- Multiple ChoicePlease save your changes before editing any questions.
Ionic bonds form between ---
nonmetals.
metals and nonmetals.
- Multiple ChoicePlease save your changes before editing any questions.
Covalent bonds form between ---
nonmetals.
metals and metals
metals and nonmetals
- Multiple ChoicePlease save your changes before editing any questions.
What are valence electrons?
sum of the protons and neutrons
protons minus electrons
electrons in the inner shells
electrons in the outer shell
- Multiple ChoicePlease save your changes before editing any questions.
Atoms that gain an electron have an electric charge of ---
-1.
-2.
+1.
+2.
- Multiple ChoicePlease save your changes before editing any questions.
If an atom has 7 protons and 7 electrons, its electric charge is ---
-7
-14
0
+7
- Multiple ChoicePlease save your changes before editing any questions.
Atoms form compounds to become more ---
reactive
stable
explosive
toxic
- Multiple ChoicePlease save your changes before editing any questions.
Atoms gain lose, gain, or ______electrons to get a stable outer energy level.
share
split
create
destroy
- Multiple ChoicePlease save your changes before editing any questions.
A _______ is the force that holds atoms together in a compound.
Chemical Formula
Chemical Reaction
Chemical Bond
Synthesis Reaction
- Multiple ChoicePlease save your changes before editing any questions.
An atom with a different number of electrons than it should have (more or less) is called an ---
isotope
valence electron
ion
octet
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is NOT a covalent bond?
K2S
H2O
I2
CO2
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is NOT an ionic bond?
NH3
KCl
K3N
NaCl
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
An electron has a ___ charge.
no charge
positive
negative
it depends
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A proton has a ___ charge.
positive
negative
no charge
it depends
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
An atom of Neon complies with the Octet Rule because it has ___ electrons in its outer shell.
10
8
2
7