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25 questions
How many valence electrons does calcium have?
2
4
6
7
If an atom is neutral/no charge, which of the following must be true?
It has more neutrons than protons or electrons.
There are only neutrons inside the atom.
Its number of protons is equal to its number of electrons.
The neutrons in the atom outnumber the electrons and protons.
Why Don't noble gases form bonds? (tricky)
ALL Noble gases have 8 valence e-
They all have a full orbitals
They only bond with each other
What kind of bond will Potassium form with Sulfur?
ionic
covalent
metallic
no bond
How many atoms are in this molecule? C6H12O6
6
12
18
24
What charge will a Neon ion have?
+1
-1
-8
Neon does not form ions.
Electrons in the outer most shell are called.....
Electrons
Valence Electrons
Protons
Neutrons
Bonds form because atoms are seeking....
Protons
Stability
Instability
What is the correct chemical formula for phosphorus trihydride?
P2H3
P4H2
PH3
P3H3
Which of the following is the chemical formula for sulfur hexachloride?
SCl6
S6Cl
S6Cl6
S1Cl6
Which of the following names matches the chemical formula N2O3?
Dinitrogen triople oxide
Nitrogen oxide
Dinitrogen trioxide
Trioxide nitrogen
carbon tetrahydride is represented by which chemical formula?
CH4
CH5
C4
C4H4
The name of the following covalent bond is...?
Nitrogen oxide
Mononitrogen oxide
Nitrogen Oxygen
Nitrogen dioxide
Generally covalent molecules are poor conductors
false
true
Metals form cations.
True
False
Which of the following is a characteristic property of ionic compounds? (3 correct answers)
They form hard, brittle crystals with characteristic shapes,
They have low melting points
They conduct electricity
They contain no charged particles
They contain charged particles
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