Chapter 2(a)
Unit 3 Atoms, Sub-Atomic Particles & Nuclear Chemistry.
As early as 400 BC, a few people believed that atoms are the building blocks of all matter. Yet, until recently, even scientists had never seen evidence.
Unit 2: Atomic Theory and Structure. (c. 400 B.C.) Democritus proposed that “atomos” are indivisible. Atom: smallest particle of matter that retains its.
Chapter 3 Atoms and Moles. Early Atomic theory 4 element theory Matter is made of atomos Alchemy Robert Boyle – proved water could be broken down; disproved.
Chapter 4 Atomic Structure ___________ means indivisible, from Democritus (Greek, 400BC) smallest particle of an element that retains the chemical properties.
AIM: Models of the Atom DO NOW: Element Y has two isotopes: Y-27 and Y-29. Y-27 has an abundance of 43% and Y-29 has an abundance of 57%. What is the average.
Chapter 3: Atoms The Building Blocks of Matter An atom is the smallest particle of an element that retains the chemical properties of that element.
Early Atomic Models
Atoms Chapter 4
