honors biology - atoms

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  • 1. Biochem Basics
    The chemical context of life

2. OUTLINE
Matter: Elements and Compounds
Atoms and their structure
Bonding
Chemical Reactions
3. ITs ALL MATTER
4. Element
Substance the cannot be broken down into other substances.
28 man-made elements + possibly 6 more
5. Compounds
6. Essential Elements
Twenty-five essential to life
Four make up 96% of ALL living matter
N O C H
Remaining 4% calcium, phosphorus, potassium, and sulfur
7. Trace Elements
8. Up and atom!
9. Subatomic particles
Daltons
Atomic Number
Atomic Mass
10. Isotopes
Elements with the same number of protons, but a different number of neutrons.
11. Isotopes used in:
Dating fossils.
Tracing atoms.
Diagnostics.
12. Energy levels of Electrons
13. Electron Distribution
Valence electrons/shell
Inert
14. Electron orbitals
Three-dimensional space where an electron is found 90% of the time.
15. Bonding
16. Covalent
Sharing of valence electrons
17. 18. Polar and nonpolar covalent bonds
Unequal sharing
19. Ionic bondS
20. Ionic bondS
21. Ionic compounds - Salts
22. Weak Bonds
Hydrogen bonds
Van de Waal interactions
23. Hydrogen bonds
24. Van der waals interactions
Unequally distributed molecules that form hot spots of positive or negative charge.
25. Chemical Reaction
26. Making and breaking bonds