Atoms & Elements. What is an atom? An atom is the smallest particle of an element that retains its identity in a chemical reaction. Word origin: atom.
CHEMISTRY ATOMIC STRUCTURE. TERMINOLOGY Chemistry study of composition of matter and processes that build up and break down substances. Biochemistry study.
Courtesy: . Tiny nucleus: diameter of about 10 -13 cm. Electrons: move about the nucleus at an average distance of about 10 -8 from.
Starter: What is everything made of? Think Pair Share.
Atoms & Elements
Development of the Periodic Table. 1700’s: 30 elements were known including Cu,Ag, Au, H, O, N, and C. 1800’s: more elements were beginning to be.
