Chapter 3, Lesson 6 Multimedia
Hot Water on Cold Water
- In the hot (yellow) water, the water molecules are slightly further apart than in the cold (blue) water.
- The hot water is less dense and floats on the cold water.
- When the cold water is placed on top, it sinks in the hot water.
Cold and Hot Water
- The molecules in hot water move faster and are a little further apart. When the water is heated, the level moves up slightly in the graduated cylinder.
- The molecules in cold water move slower and are a little closer together. When the water is cooled, the level moves down slightly in the graduated cylinder.
- Lesson 1: Water is a Polar Molecule
- Lesson 2: Surface Tension
- Lesson 3: Why Does Water Dissolve Salt?
- Lesson 4: Why Does Water Dissolve Sugar?
- Lesson 5: Using Dissolving to Identify an Unknown
- Lesson 6: Does Temperature Affect Dissolving?
- Lesson 7: Can Liquids Dissolve in Water?
- Lesson 8: Can Gases Dissolve in Water?
- Lesson 9: Temperature Changes Dissolving
- Lesson 1: What is a Chemical Reaction?
- Lesson 2: Controlling the Amount of Products in a Chemical Reaction
- Lesson 3: Forming a Precipitate
- Lesson 4: Temperature and the Rate of a Chemical Reaction
- Lesson 5: A Catalyst and the Rate of Reaction
- Lesson 7: Energy Changes in Chemical Reactions
- Lesson 8: pH and Color Change
- Lesson 9: Neutralizing Acids and Bases
- Lesson 10: Carbon Dioxide Can Make a Solution Acidic