Ahydrocarbon with only single bonds is classified as
a. an alkene.
b. an alkyne.
c. saturated.
d. unsaturated.

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

In which phase(s) do the molecules take the shape of the container?

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.