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27 questions
What is a valence electron?
an electron that is found in the outermost shell of an atom.
an electron found in the innermost shell of an atom.
an electron found in the middle shell.
What is the number of valence electrons for Carbon (Group 14)?
1
2
3
4
What is the number of valence electrons for Neon and the other Noble Gases?
5
6
7
8
A covalent bond forms when atoms ___________ electrons.
gain
share
increase
transfer
Ionic bonding is between a
nonmetal and nonmetal
metal and nonmetal
metal and metal
Depends on the situation
Which category of elements usually form negative ions?
metals
nonmetals
metalloids
noble gases
Predict the bond between Mg and Cl
covalent
ionic
metallic
none of the above
What will be the formula of the following chemical compound name?
Carbon Trichloride
C3Cl
CCl
3CCl
CCl3
What will be the formula of the following chemical compound name?
Sulfur Diiodide
SI2
2SI
S2I2
S2I
What charge would a potassium (K) ion have?
+1
-1
+2
-2
A solid substance is soft, has a low melting point and is a poor conductor of electricity. The substance is most likely
Ionic Compound
network solid
metallic solid
covalent solid
What usually forms the positive ion?
Metal
Nonmetals
None
What do two atoms form when they are joined together?
a nonmetal
a metal
a chemical bond
an atom
What is the correct Lewis Dot Structure for ammonia NH3
In metallic bonds electrons are:
shared
move around the nuclei randomly
transferred
Which of the following would be held together by the metallic bond?
Atoms of iron (Fe)
Molecules of CH4
Atoms of sulfur (S)
Units of NaCl
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