Which state of matter is found to be more stable at lower temperatures?

Evaporation is called as

Which of the following substances in the gaseous state should be called a vapour?
$(i)$ Helium
$(ii)$ Nitrogen
$(iii)$ Carbon dioxide
$(iv)$ Sulphur

Carbon dioxide was taken in an enclosed cylinder and compressed by applying pressure.
$(a)$ Which state of matter will we obtain after completion of the process?
$(b)$ Name and define this process.
$(c)$ What is the common name of the product obtained in the above process?

The boiling points of diethyl ether, acetone, and $n-$butyl alcohol are $35\,^\circ\text{C}$, $56\,^\circ\text{C}$, and $118\,^\circ\text{C}$ respectively. Which one of the following correctly represents their boiling points in the Kelvin scale?

$(a)$ Explain with the help of an activity which shows that particles of matter are very small.
$(b)$ Define matter. Name the states of matter in which the forces between the constituent particles are
$(i)$ strongest
$(ii)$ weakest
$(c)$ When sugar and common salt are kept in different jars,they take the shape of the jars. Are they solid? Justify your answer.