fa26-soilsci101 soilsci101
Appendix A: Basic Chemistry Appendix A: Basic Chemistry
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Appendix A Basic Chemistry
Atoms
THE BASIC ATOMIC STRUCTURES OF HYDROGEN AND HELIUM, THE TWO MOST ABUNDANT ATOMS IN THE UNIVERSE
HYDROGEN
NUCLEUS
HELIUM
NUCLEUS
FIGURE A.1
PERIODIC TABLE OF THE ELEMENTS
Molecular Structure and Chemical Reactions
TWO WAYS TO PICTURE A CHEMICAL REACTION
MOLECULAR FORMULA
ELECTRON SHELL MODEL
Cells and Vital Molecules
Summary
THE FORMATION OF AN IONIC COMPOUND
MOLECULAR FORMULA
ELECTRON SHELL MODEL
THE CELL AND KEY MOLECULES RESPONSIBLE FOR THE STRUCTURE AND FUNCTIONING OF LIVING SYSTEMS
PROTEIN
PHOSPHOLIPID
ATP
CARBOHYDRATE
NUCLEIC ACID (DNA)