In which of the following, the molecules are less closely packed?

Which one of the following has a definite volume, but no definite shape?

In which of the following, the molecules are very close to each other?

In which of the following, the molecules are separated by large empty spaces?

All matter can be split into tiny units called:

Which is the smallest unit of a substance that has all the properties of that substance?

Which is a temporary change that can be reversed?

Atoms of the same kind combine and form:

Heating or cooling brings about changes in:

A molecule can be further broken into still smaller units called: