The NGSS in Iowa

HS-PS1 Matter and Its Interactions

• HS-PS1-1 Use the periodic table as a model to predict the relative properties of elements based on the patterns of electrons in the outermost energy level of atoms.

  • Count subatomic particles in atoms and ions (Ch-G.1)
  • Identify the electron configuration of an atom or ion (Ch-I.)
  • Periodic trends: Ionization energy (Ch-J.1)
  • Introduction to chemical bonding (Ch-K.1)
  • Determine which type of chemical bond can form (Ch-K.2)

• HS-PS1-2 Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.

  • Classify chemical reactions (Ch-Q.1)

• HS-PS1-3 Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.

  • Explore intermolecular forces and kinetic energy in phase diagrams (Ch-N.1)

• HS-PS1-4 Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.

  • Identify exothermic and endothermic processes (Ch-E.1)

• HS-PS1-5 Apply scientific principles and evidence to provide an explanation about the effects of changing the temperature or concentration of the reacting particles on the rate at which a reaction occurs.

  • Factors that affect reaction rate (Ch-U.1)

• HS-PS1-6 Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.

  • Predict the equilibrium shift (Ch-V.1)

• HS-PS1-7 Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.

  • Calculate molar mass (Ch-O.1)
  • Convert between mass and moles of a substance (Ch-O.2)
  • Count atoms in chemical reactions using models (Ch-P.1)
  • Count atoms in chemical equations (Ch-P.2)
  • Balance chemical equations I (Ch-P.3)
  • Determine mole ratios (Ch-R.1)
  • Calculate the mass of a reactant or product (Ch-R.2)
  • Calculate the volume of a gaseous reactant or product at STP (Ch-R.3)

• HS-PS1-8 Develop models to illustrate the changes in the composition of the nucleus of the atom and the energy released during the processes of fission, fusion, and radioactive decay.

  • Classify nuclear reactions (Ch-H.1)

HS-PS2 Motion and Stability: Forces and Interactions

• HS-PS2-6 Communicate scientific and technical information about why the molecular-level structure is important in the functioning of designed materials.

HS-PS3 Energy

• HS-PS3-1 Create a computational model to calculate the change in the energy of one component in a system when the change in energy of the other component(s) and energy flows in and out of the system are known.

  • Calculations involving specific heat (Ch-F.1)

• HS-PS3-2 Develop and use models to illustrate that energy at the macroscopic scale can be accounted for as a combination of energy associated with the motions of particles (objects) and energy associated with the relative position of particles (objects).

• HS-PS3-4 Plan and conduct an investigation to provide evidence that the transfer of thermal energy when two components of different temperature are combined within a closed system results in a more uniform energy distribution among the components in the system (second law of thermodynamics).

HS-PS4 Waves and Their Applications in Technologies for Information Transfer

• HS-PS4-1 Use mathematical representations to support a claim regarding relationships among the frequency, wavelength, and speed of waves traveling in various media.

• HS-PS4-3 Evaluate the claims, evidence, and reasoning behind the idea that electromagnetic radiation can be described either by a wave model or a particle model, and that for some situations one model is more useful than the other.

• HS-PS4-4 Evaluate the validity and reliability of claims in published materials of the effects that different frequencies of electromagnetic radiation have when absorbed by matter.