1. Indefinite shape: Solids have a definite shape, meaning they maintain their form unless acted upon by an external force. They don't take the shape of their container like liquids or gases do.
2. Indefinite volume: Solids have a definite volume, meaning they occupy a fixed amount of space. Their volume doesn't change significantly with changes in pressure or temperature.
Let me know if you'd like to explore other properties of solids!
