Answer:
<em>Line graphs are used to track changes over short and long periods of time. When smaller changes exist, line graphs are better to use than bar graphs. Line graphs can also be used to compare changes over the same period of time for more than one group.</em>
Barium is Group
I
I
, Period 6,
Z
=
56
. The last closest Noble Gas is
Z
=
54
. This is xenon.
I would assume it would be impossible or unlikely
C. both rows and collumns
Building a tower out of magnetic blocks and water vapor condensing on a bathroom mirror are only physical changes.
A physical change is easily reversible. It does not involve a change in the composition of a substance.
A tower built out of magnetic blocks can easily be pulled apart and water that condensed on a bathroom mirror can easily change back to vapour by heating.
All these are possible because the both processes are only physical changes.
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