The solid form of a substance is usually more dense than its liquid and gaseous forms. similarly the liquid form is usually more dense than the gaseous form.
which of these breaks this general density rule?
a. ice floating in a glass of water
b. vapor rising from a hot cup of tea
c. cooled magma sinking in a lava flow
d. a hot air balloon falling as the gas inside cools

Some molecular compounds, such as hcl, ionize completely in solution. for molecular compounds such as h2co3, most molecules do not ionize in solution. which describes the properties of these two solutes? a. hcl and h2co3 have the same effect on the properties of the solution. b. hcl raises the freezing point of water more than h2co3 does. c. hcl raises the boiling point of water more than h2co3 does.