8th Grade Physical Science
Unit 1 – Matter: Structure and Properties
Atomic Structure and Molecules
Priority Performance Standard: PS1-MS-1. Develop models to describe the atomic composition of simple molecules and extended structures.
Thermal Energy and States of Matter
Priority Performance Standard: PS1-MS-4. Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
Unit 2 – Chemical Reactions
Conservation of Mass in Chemical Reactions
Priority Performance Standard: PS1-MS-5. Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.
Priority Performance Standard: PS1-MS-2. Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
Supporting Performance Standard: PS1-MS-6. Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.
Natural and Synthetic Materials
Enrichment Performance Standard: PS1-MS-3. Gather and make sense of information to describe that synthetic materials come from natural resources and impact society.
Unit 3 – Energy Transfer
Thermal Energy Transfer
Priority Performance Standard: PS3-MS-3. Apply scientific principles to design, construct, and test a device that either minimizes or maximizes thermal energy transfer.
Supporting Performance Standard: PS3-MS-4. Plan an investigation to determine the relationships among the energy transferred, the type of matter, the mass, and the change in average kinetic energy of the particles as measured by the temperature of the sample.
Supporting Performance Standard: PS1-MS-4. Develop a model that predicts and describes changes in particle motion, temperature, and state of a pure substance when thermal energy is added or removed.
Unit 4 – Waves
Wave Properties and Behaviors
Priority Performance Standard: PS4-MS-2. Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.
Supporting Performance Standard: PS4-MS-1. Use mathematical representations to describe a simple model for waves that includes how the amplitude of a wave is related to the energy in a wave.
Digital vs Analog Signals
Enrichment Performance Standard: PS4-MS-3. Integrate qualitative scientific and technical information to support the claim that digitized signals are a more reliable way to encode and transmit information than analog signals.
Unit 5 – Forces
Forces at a Distance and Fields
Priority Performance Standard: PS2-MS-5. Conduct an investigation and evaluate the experimental design to provide evidence that fields exist between objects exerting forces on each other even though the objects are not in contact.
Supporting Performance Standard: PS2-MS-4. Construct and present arguments using evidence to support the claim that gravitational interactions are attractive and depend on the masses of interacting objects.
Supporting Performance Standard: PS2-MS-3. Ask questions about data to determine the factors that affect the strength of electric and magnetic forces.
Priority Performance Standard: PS3-MS-2. Develop a model to describe that when the arrangement of objects interacting at a distance changes, different amounts of potential energy are stored in the system.
Kinetic Energy Transfer
Priority Performance Standard: PS3-MS-5. Construct, use, and present arguments to support the claim that when the kinetic energy of an object changes, energy is transferred to or from the object.
Unit 6 – Motion
Priority Performance Standard: PS3-MS-1. Construct and interpret graphical displays of data to describe the relationships of kinetic energy to the mass of an object and to the speed of an object.
Newton’s First and Second Laws
Priority Performance Standard: PS2-MS-2. Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object.
Newton’s Third Law
Priority Performance Standard: PS2-MS-1. Apply Newton’s Third Law to design a solution to a problem involving the motion of two colliding objects.