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Chapter 1: Matter—Solids, Liquids, and Gases

Students are introduced to the idea that matter is composed of atoms and molecules that are attracted to each other and in constant motion. Students explore the attractions and motion of atoms and molecules as they experiment with and observe the heating and cooling of a solid, liquid, and gas.

  1. Molecules Matter
  2. Molecules in Motion
  3. The Ups and Downs of Thermometers
  4. Moving Molecules in a Solid
  5. Air, It's Really There

Chapter 2: Changes of State

Students help design experiments to test whether the temperature of water affects the rate of evaporation and whether the temperature of water vapor affects the rate of condensation. Students also look in more detail at the water molecule to help explain the state changes of water.

  1. Heat, Temperature, and Conduction
  2. Changing State—Evaporation
  3. Changing State—Condensation
  4. Changing State—Freezing
  5. Changing State—Melting

Chapter 3: Density

Students experiment with objects that have the same volume but different mass and other objects that have the same mass but different volume to develop a meaning of density. Students also experiment with density in the context of sinking and floating and look at substances on the molecular level to discover why one substance is more or less dense than another.

  1. What is density?
  2. Finding Volume—The Water Displacement Method
  3. Density of Water
  4. Density—Sink and Float for Solids
  5. Density—Sink and Float for Liquids
  6. Temperature and Density

Chapter 4: The Periodic Table & Bonding

Students look more deeply into the structure of the atom and play a game to better understand the relationship between protons, neutrons, electrons, and energy levels in atoms and their location in the periodic table. Students will also explore covalent and ionic bonding.

  1. Protons, Neutrons, and Electrons
  2. The Periodic Table
  3. The Periodic Table & Energy Level Models
  4. Energy Levels, Electrons, and Covalent Bonding
  5. Energy Levels, Electrons, and Ionic Bonding
  6. Represent Bonding with Lewis Dot Diagrams

Chapter 5: The Water Molecule and Dissolving

Students investigate the polarity of the water molecule and design tests to compare water to less polar liquids for evaporation rate, surface tension, and ability to dissolve certain substances. Students also discover that dissolving applies to solids, liquids, and gases.

  1. Water is a Polar Molecule
  2. Surface Tension
  3. Why Does Water Dissolve Salt?
  4. Why Does Water Dissolve Sugar?
  5. Using Dissolving to Identify an Unknown
  6. Does Temperature Affect Dissolving?
  7. Can Liquids Dissolve in Water?
  8. Can Gases Dissolve in Water?
  9. Temperature Changes in Dissolving

Chapter 6: Chemical Change

Students explore the concept that chemical reactions involve the breaking of certain bonds between atoms in the reactants, and the rearrangement and rebonding of these atoms to make the products. Students also design tests to investigate how the amount of products and the rate of the reaction can be changed. Students will also explore endothermic and exothermic reactions.

  1. What is a Chemical Reaction?
  2. Controlling the Amount of Products in a Chemical Reaction
  3. Forming a Precipitate
  4. Temperature and Rate of a Chemical Reaction
  5. A Catalyst and the Rate of Reaction
  6. Using Chemical Change to Identify an Unknown
  7. Energy Changes in Chemical Reactions
  8. pH and Color Change
  9. Neutralizing Acids and Bases
  10. Carbon Dioxide Can Make a Solution Acidic