Temperature and State Changes
At sea level, water freezes at 32°F (0°C) and boils at 212°F (100°C). These are the temperatures at which water changes state. When a liquid boils (changes to a gas), it absorbs heat. When a gas condenses (changes back to a liquid), it gives off heat.
- As the pressure on a liquid is increased, the boiling point rises.
- As the pressure on a liquid is decreased, the boiling point drops.