Chapter 3, Lesson 4 Multimedia
- Wax is made of carbon and hydrogen atoms bonded together in long chains.
- The chains are tangled, intertwined and packed together to make the wax.
- Water molecules are packed more closely together than the long molecules that make up wax.
- The oxygen atoms in water are also smaller and heavier than the carbon atoms in wax. This contributes to making water more dense than wax.
- Clay contains oxygen atoms like water but also contains heavier atoms such as silicon and aluminum.
- These atoms are packed pretty close together which makes clay more dense than water.
- 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