1 Chemistry of Life Chemistry: study of matter Biochemistry: study of living matter.

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Presentation transcript:

1 Chemistry of Life Chemistry: study of matter Biochemistry: study of living matter

2 Matter Anything with mass that occupies space Solid, liquid, gas (depending upon density)

3 Properties of matter Chemical: characteristics of matter as it undergoes change in composition Physical: characteristics of matter such as color, density, hardness, melting point, boiling point, electrical and thermal conductivities

4 Types of matter MATTER MIXTURESPURE SUBSTANCES Homogenous Heterogeneous COMPOUNDS ELEMENTS

5 Terminology Atom: smallest particle of an element Molecule: smallest particle of an element or compound that can have a stable independent existence

6 Atom of an element Nucleus Neutron Proton Electron

7 Periodic table of elements Atomic number Atomic mass Electronegativity Ionization number Valence number

8 Chemical formulas Show the chemical composition of a substance

9 Electron shells

10 Bonds Ionic Covalent Hydrogen Chemical reactions represent forming or breaking of bonds.

11 Ions and Ionic compounds Gaining or losing electrons in the outer shell  cations or anions

12 Hydrogen bonds Weak when few, strong when many

13 Covalent bonds Sharing electrons in the outer shell

14 Polar covalent bonds contribute to water properties (cohesion & adhesion) Water chemistry

15 Water dissociation  weak acids and bases

16 Water vs. Ice

17 Solvent

18 Proteins Membrane & cellular proteins