Magnesium cations have twice the charge of ________________ cations.

In _______________ the constituent particles can only vibrate about a fixed point.

__________ posses a greater tendency to diffuse.

________ can be compressed to a greater extent.

_________ has no definite shape.

___________ have practically no tendency to diffuse.

________ have high density.

__________ of a gas may be defined as the force exerted by the gas per unit area of the walls of the containing vessel.

In __________ the inter particle distances are quite large.

The pressure of a gas is generally measured by a simple device known as