In each group of four boxes one box has a kind of matter that is fundamentally different from the
matter in the other three. Identify that box in each set, and justify your answer by characterizing
the type of matter (compound, element, mixture, heterogeneous, etc.) in each box.
1)
(5 atoms of a)
monatomic
element
(5 MOLECULES of a)
diatomic MOLECULAR
element
(6 atoms of a)
monatomic
element
(6 atoms of a)
monatomic
element
2)
monatomic
element
molecular
element
molecular
compound
molecular
compound
a mixture of
two elements
a mixture of an
element and a
compound
monatomic
element
molecular
COMPOUND
3)
molecular
compound
molecular
ELEMENT
4)
a mixture of two
compounds
a (single) molecular
COMPOUND
5)
All represent mixtures of a compound and an element, but the third one differs in that the nanoscopic “particles” of the
two substances (element and compound) are NOT randomly mixed up with one another at the nanoscopic level. This
third box represents a heterogeneous mixture whereas the other three boxes represent homogeneous mixtures