Matter
S8P1. Obtain, evaluate, and communicate information about the structure and properties of matter.
- Develop and use a model to compare and contrast pure substances (elements and
compounds) and mixtures.
(Clarification statement: Include heterogeneous and homogeneous mixtures. Types of bonds and compounds will be addressed in high school physical science.) - Develop and use models to describe the movement of particles in solids, liquids, gases, and plasma states when thermal energy is added or removed.
- Plan and carry out investigations to compare and contrast chemical (i.e., reactivity, combustibility) and physical (i.e., density, melting point, boiling point) properties of matter.
- Construct an argument based on observational evidence to support the claim that when a change in a substance occurs, it can be classified as either chemical or physical. (Clarification statement: Evidence could include ability to separate mixtures, development of a gas, formation of a precipitate, change in energy, color, and/or form.)
- Develop models (e.g., atomic-level models, including drawings, and computer representations) by analyzing patterns within the periodic table that illustrate the structure, composition, and characteristics of atoms (protons, neutrons, and electrons) and simple molecules.
- Construct an explanation based on evidence to describe conservation of matter in a chemical reaction including the resulting differences between products and reactants.
(Clarification statement: Evidence could include models such as balanced chemical equations.)