1. Which generally expands more for an equal increase in temperature—solids or liquids? 2. What is the reason ice is less dense than water? 3. Why does ice form at the surface of a pond instead of at...

1. Which generally expands more for an equal increase in temperature—solids or liquids?

2. What is the reason ice is less dense than water?

3. Why does ice form at the surface of a pond instead of at the bottom?