RTYA 1 Revision- 7th

The change of vapour state to liquid state on cooling is called

• Sublimation

• Deposition

• Vaporization

• Liquefaction

What is the conclusion of this experiment ?

• Solids do not have mass

• Solids can't occupy space

• Solids occupy space

• Solids have mass

Which state of matter has large kinetic energy ?

• Solid

• Liquid

• Gas

The basic unit of matter is

• a molecule

• a substance
• an atom
• a element

In which state of matter do particles have the least kinetic energy?

• solids

• liquids

• gases

Change of state from vapour to liquid:

Describe the density of gases (one-word answer)

Describe the number of free surfaces a liquid has. (in word)

What does this experiment depict?

• Intermolecular space

• Intermolecular force of attraction

• Solids have space

• Solids have mass

Which of the three states of matter has particles moving in neither their own positions nor in any random direction?