Physical Science

Chapter 20: Chemical Bonds

Self-Check Quiz.-Eng.

1.
A compound __________.
A)is a pure element
B)has the same properties as its parts
C)is a combination of two or more elements
D)is composed of only metals
2.
In the chemical formula for sucrose (C12H22O11), how many oxygen atoms are there in each molecule?
A)12
B)22
C)11
D)1
3.
Chemical compounds are __________.
A)less stable than their individual elements
B)more stable than their individual elements
C)always unstable
D)always stable
4.
In general, noble gases react with __________.
A)other noble gases
B)metals
C)water
D)nothing
5.
When an atom's outer energy levels are not filled completely, the atom __________.
A)is very stable
B)is a noble gas
C)cannot form a compound
D)can gain, lose, or share electrons
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