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.
Clarification statement: Examples of properties that could be predicted from patterns could include reactivity of metals, types of bonds formed, numbers of bonds formed, and reactions with oxygen.
Assessment boundary: Assessment is limited to main group elements. Assessment does not include quantitative understanding of ionization energy beyond relative trends.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of HS-PS1-1.
Assessment
What assessment of HS-PS1-1 might look like on a NY state exam.
NGSS Dimensions
Performance expectation HS-PS1-1 was developed using the following elements from the NRC document A Framework for K-12 Science Education:
Developing and using models: Use a model to predict the relationships between systems or between components of a system.
Structure and properties of matter: Each atom has a charged substructure consisting of a nucleus, which is made of protons and neutrons, surrounded by electrons.
Structure and properties of matter: The periodic table orders elements horizontally by the number of protons in the atom’s nucleus and places those with similar chemical properties in columns. The repeating patterns of this table reflect patterns of outer electron states.
Patterns: Different patterns may be observed at each of the scales at which a system is studied and can provide evidence for causality in explanations of phenomena.
Connections to Other Standards
HS-PS1-1 connections to ELA, math, and other science standards as outlined by the NYS Education Department:
Science
HS.LS1.C: Organization for Matter and Energy Flow in Organisms
ELA/Literacy
9-10.RST.7: Translate scientific or technical information expressed as written text into visual form (e.g., a table or chart), and translate information expressed visually or mathematically (e.g., in an equation) into words.