A solid is an object that has definite shape, volume, and mass. This means that the shape, volume, and mass will never change.
A liquid is something that has definite volume and mass, but it does not have definite shape because a liquid is the shape of its container.
A gas <span>does not have a definite shape, mass, or <span>volume because a gas is able to spread around.</span></span>
The correct answer is D. Covalent Bond
