No, they are not, but due to the fact that the forces of attraction between them are weak, every gas molecule, from a single ion of Hydrogen to biggest molecules will have the same weak forces of repulsion, resulting in them taking up the same ammount of space.
No
Example: Helium weighs more than Oxygen
yes, all the matters have same weight if they are of the same quantity.
During condensation in gas before all gas becomes a liquid it stays the same until all the particles of matter have changed state.
Gas particles move randomly in all possible directions and travel in a straight path.
smoke particles are bigger than gas particles.
Gas particles, like the particles in all states of matter (solid, liquid, gas) are always moving apart and colloding with other particles. Gas particles have more space in between and tend to move faster than the particles in a solid or liquid state. Temperature only affects how fast a particle moves, therefore warm air makes gas particles move faster and cold air makes gas particles move slower.
yes, all the matters have same weight if they are of the same quantity.
No, they are not.
They are all made of matter; just in different states.
D. particles exert attractive forces on each other
Non compressed gas has the gas particles spread out more. But when compressed packed more tightly therefore taking up less room but yet still has the same amount of atoms. So you still have the same weight but just that the particles are packed more tightly.
I think that all forms have the same amount of kenetic energy due to the fact that they can all change into the same amount of different molecular make ups.
During condensation in gas before all gas becomes a liquid it stays the same until all the particles of matter have changed state.
No
No. Assuming we're talking about the same substance, particles of a gas have more energy than particles of a solid.
Gas particles move randomly in all possible directions and travel in a straight path.
Surface tension.
Surface tension.