Final answer:
Not all substances have higher density in the solid phase than in the liquid phase. For example, water in its solid form (ice) has lower density than as a liquid.
Step-by-step explanation:
The statement is actually false. Not all substances are denser in their solid phase than in their liquid phase. A common example is water. When water freezes into ice, it occupies more volume due to the orientation of hydrogen bonds, resulting in a lower density compared to its liquid state. Most substances, when they solidify, pack their molecules more closely together than in their liquid state, resulting in a higher density. However, this is not a universal rule and does not apply to all substances under all conditions.
Learn more about States of Matter