Physical Science (Grade 8) — Lessons, Skills & Practice | Pengi Physical Science for Grade 8 is a comprehensive middle school science textbook that introduces students to the fundamental principles of the physical world across five units. The course covers matter and energy, including atomic structure, chemical bonds, reactions, and solutions, before moving into mechanics topics such as motion, forces, gravity, work, and simple machines. Students also explore waves, sound, light, optics, electromagnetic waves, and a full unit on electricity, circuits, and magnetism, giving them a broad foundation in both chemistry and physics concepts.
Physical Science (Grade 8) covers 21 chapters and 72 lessons on Pengi.
Physical Science (Grade 8) textbook table of contents Chapter 1: Introduction to Matter - Unit 1 Chapter 2: Properties of Matter - Unit 1 Chapter 3: Energy - Unit 1 Chapter 4: Temperature and Heat - Unit 1 Lesson 4.1: Temperature depends on particle movement Learn Practice Lesson 4.2: Energy flows from warmer to cooler objects Learn Practice Lesson 4.3: The transfer of energy as heat can be controlled Learn Practice Chapter 5: Atomic Structure and the Periodic Table - Unit 2 Chapter 6: Chemical Bonds and Compounds - Unit 2 Chapter 7: Chemical Reactions - Unit 2 Lesson 7.1: Chemical reactions alter arrangements of atoms Learn Practice Lesson 7.2: The masses of reactants and products are equal Learn Practice Lesson 7.3: Chemical reactions involve energy changes Learn Practice Lesson 7.4: Life and industry depend on chemical reactions Learn Practice Chapter 8: Solutions - Unit 2 Chapter 9: Carbon in Life and Materials - Unit 2 Lesson 9.1: Carbon-based molecules have many structures Learn Practice Lesson 9.2: Carbon-based molecules are life's building blocks Learn Practice Lesson 9.3: Carbon-based molecules are in many materials Learn Practice Chapter 10: Motion - Unit 3 Lesson 10.1: An object in motion changes position Learn Practice Lesson 10.2: Speed measures how fast position changes Learn Practice Lesson 10.3: Acceleration measures how fast velocity changes Learn Practice Chapter 11: Forces - Unit 3 Chapter 12: Gravity, Friction, and Pressure - Unit 3 Chapter 13: Work and Energy - Unit 3 Lesson 13.1: Work is the use of force to move an object Learn Practice Lesson 13.2: Energy is transferred when work is done Learn Practice Lesson 13.3: Power is the rate at which work is done Learn Practice Chapter 14: Machines - Unit 3 Chapter 15: Waves - Unit 4 Chapter 16: Sound - Unit 4 Chapter 17: Electromagnetic Waves - Unit 4 Chapter 18: Light and Optics - Unit 4 Chapter 19: Electricity - Unit 5 Lesson 19.1: Materials can become electrically charged Learn Practice Lesson 19.2: Charges can move from one place to another Learn Practice Lesson 19.3: Electric current is a flow of charge Learn Practice Chapter 20: Circuits and Electronics - Unit 5 Lesson 20.1: Charge needs a continuous path to flow Learn Practice Lesson 20.2: Circuits make electric current useful Learn Practice Lesson 20.3: Electronic technology is based on circuits Learn Practice Chapter 21: Magnetism - Unit 5 Pengi Sign in
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