1. If the first job of an architect is to understand building material, then the first job of a biologist is to understand the chemistry of life.

2. Presented by Mr. Rainbeau
Basic Chemistry
Presented by
Mr. Rainbeau

3. Why Chemistry? All living and nonliving things are made up of atoms
All organisms are chemical machines

4. Anatomy
Physiology
Biochemistry
Cell
Biology

5. Atoms:
The smallest particle of matter

6. What is inside the atom?
Proton
Neutron
Electron

8. Elements:
a substance made up of only one kind of atom (Ex:

10. What is a bond?
A force that holds atoms together.

11. Why do Atoms Bond? To become stable
To have 8 electrons in their outter shell
**Makes a compound

12. Molecular Formula Specify the elements present
Subscripts is the actual # of each kind of atom
The # before the formula tells you how many molecules of the compound
**Almost a recipe (Ex: H2O)

13. Water: H2O

14. C12H22O12

15. Structual Formula
A representation of the elements and how they bond to form a molecule
**Almost a drawing

17. Presented by Mr. Rainbeau
Properties of Water
Presented by
Mr. Rainbeau

18. What are the two types of chemical bonds?
Ionic Bond
Covalent Bond

19. Ionic Bond One atom transfers 1 or more electrons to another atom
Weak bond
** forms an ION- atom with a charge
One atom gains e-, the other loses an e-

21. NaCl

27. Covalent Bonds Forms when electrons are shared between atoms
Strong bond

33. Why are water molecules polar?
Because there is an uneven distribution of electrons between the hydrogen and oxygen atoms

34. Hydrogen Bonds
Attraction between negative H and positive O
Very Weak

35. Solution
A mixture where the components are equally distributed

36. What makes up a solution?
the solute –substance that is dissolved
the solvent –substance in which the solute dissolves
**Ex: milk is the __ chocolate is the __ .