Biochemistry
Dr .HAM Ibrahim
, Introduction
• Chemistry : study of matter
• Matter = any thing that has mass and takes place in
space (volume)
• Atom is the smallest particles of matter ,and make up
every things around, All matter is made of atoms.
• Elements are only one type of atom (C-Carbon , H-
Hydrogen , O-Oxygen…)
• Compounds are made up of different types of atoms (H₂o
, Co₂, NaCl ).
• Molecules are combinations of atoms .