What can liquids do that solids cannot?Liquids will flow and fill up any shape of container. Solids like to hold their shape. In the same way that a large solid holds its shape, the atoms inside of a solid are not allowed to move around too much. Atoms and molecules in liquids and gases are bouncing and floating around, free to move where they want.
What can gases do that solids cannot?The atoms and molecules in gases are much more spread out than in solids or liquids. They vibrate and move freely at high speeds. A gas will fill any container, but if the container is not sealed, the gas will escape. Gas can be compressed much more easily than a liquid or solid.
Answer is: the atom is the smallest known particle of matter. John Dalton claimed that atom is indestructible and a<span>ll atoms of a given element are identical in mass and properties. </span>Thomson discovered electron and found the first evidence for isotopes<span> of a stable element.</span>
