Unpacked Content
Scientific and Engineering Practices
Analyzing and Interpreting Data
Crosscutting Concepts
Energy and Matter
Knowledge
Students know:
- As kinetic energy is added to a system, the forces of attraction between particles can no longer keep the particles close together.
- Patterns of interactions between particles at the molecular level are reflected in the patterns of behavior at the macroscopic scale.
- Patterns observed at multiple levels (macroscopic, atomic/ molecular/ particulate) can provide evidence of the causal relationships between the strength of the electrical forces between particles and the structure of the substance at the macroscopic level.
Skills
Students are able to:
- Analyze and interpret data to describe why properties provide information about the strength of electrical forces between the particles of chosen substances, including phase-change diagrams.
Understanding
Students understand that:
- Data is analyzed using tools, technologies, and/ or models (e.g., computational, mathematical) in order to make valid and reliable scientific claims.
- The structure and interactions of matter at the macroscopic level are determined by electrical forces within and between atoms.
- Different patterns may be observed at each of the levels at which a system is studied and can provide evidence for causality in explanations of phenomena.
Vocabulary
- physical properties
- melting point
- boiling point
- solubility
- phase-change diagrams
- Atomic/ molecular level
- Macroscopic level
- Particles
- ions
- atoms
- molecules
- networked materials (like graphite)
- Intermolecular/ electrical forces
- System
