From Matter to Dalton’s Atomic Theory

Distinguish an observation, a hypothesis, a scientific model, and a scientific theory in the context of atoms.

Describe how ancient atomism differed from evidence-based atomic theory.

Explain conservation of mass by representing a chemical reaction as a rearrangement of particles.

Use the laws of definite and multiple proportions to infer that matter contains discrete units.

State the central claims of Dalton’s atomic theory.

Identify which claims in Dalton’s atomic theory were retained or revised by later evidence.