Anything that has mass and volume (takes up space) is called matter.
Just add more detail in the second experiment explain every little thing.
<span>The statement best describes the collisions of gas particles according to the kinetic-molecular theory is that the collisions of gas particles in an ideal gas are completely elastic. An expansion in the quantity of gas particles in the holder expands the recurrence of impacts with the dividers and in this manner the weight of the gas. The last propose of the motor sub-atomic hypothesis expresses that the normal active vitality of a gas molecule depends just on the temperature of the gas.</span>
They have same chemical properties
for example the elements of group VIII are called noble gases .They are unreactive, odorless and colorless.
