Answer:The main difference between a solid and a liquid lies in the arrangement and movement of their constituent particles (atoms or molecules). Solids: - Fixed Shape and Volume: Solids possess a definite shape and volume. Their particles are tightly packed in a fixed, ordered arrangement. This strong intermolecular attraction restricts particle movement to only slight vibrations around their fixed positions .
Answer:Solids have a definite shape and volume because their particles are tightly packed and fixed in place. Liquids have a definite volume but take the shape of their container because their particles are close but can move around.