Concept 1: Properties and Changes of Properties in Matter Understand physical and chemical properties of matter.
PO 1. Identify that matter is made of smaller units called: • molecules (e.g., H2O, CO2) • atoms (e.g., H, N, Na) PO 2. Distinguish between mixtures and compounds. PO 3. Describe changes of matter: • physical – cutting wood, ripping paper, freezing water • chemical – burning of wood, rusting of iron, milk turning sour