Lesson 4 of 13
Warmth moves the limit
Show on a big screenBaking soda stops dissolving in cold water. Warm the water and the rest dissolves.
Step 1 of 2
- For most solids, the limit rises with warmth.
- For gases, the limit usually falls with warmth.
The rule
For most solids, solubility rises as the water gets warmer. For gases it usually falls. So cold water holds more oxygen than warm water.
Fish and plants use the oxygen dissolved in water. Warm water holds less oxygen. So fish get less.
Pick a temperature. Choose a solid or a gas.
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Try the lab to finish this lesson.