4.2
Matter
Thobile matter and material
1 Chapter 2 Atoms, Molecules, and Ions. 2 Atoms and Atomic Structure Dalton’s Atomic Theory - 1808 1.- Elements are composed of small, nondivisible particles.
5.1-Organizing the elements:
Elements
1 Chapter 3 Chemical Compounds. 2 Chemical Formulas; Molecular and Ionic Substances The chemical formula of a substance is a notation using atomic symbols.
5.1-Organizing the elements: To find a way to organize the elements, scientist studied the elements and their properties. Dmitri Mendeleev was the first.
