ATOMICSTRUCTURE Semester Chemistry Unit 2 KNOCKHARDY PUBLISHING.
ATOMIC STRUCTURE A guide for GCSE students 2010 SPECIFICATIONS KNOCKHARDY PUBLISHING.
atoms and molecules
CHAPTER 2 Essential Chemistry for Biology. Matter: Elements and Compounds Matter is anything that occupies space and has mass. Matter is found on the.
1 Chapter 2: Atoms and Molecules. 2 SYMBOLS AND FORMULAS A unique symbol is used to represent each element. Formulas are used to represent compounds.
