1. We are walking test tubes!
The Chemistry of Life
We are walking test tubes!

2. What can you tell me about this equation?
C6H12O6 + O6  CO2 + H2O

3. Atoms are the fundamental units of matter.
Atom = “unable to be cut” first coined nearly 2,000 years ago
Smallest unit of matter that still retains the property of matter
Wood example

4. Subatomic particles Atoms are made up of three particles
Protons – negative charge
Neutrons – neutral charge (no charge)
Electrons – negative charge
Protons + Neutrons = nucleus
Electrons are found in energy shells outside of the nucleus

5. The classic atom model (you need to sketch this)

6. Elements and the Periodic Table
Elements are pure substances that are made up of only one kind of atom
Arranged on the periodic table
Atomic number = # of protons (+)
Atomic mass = protons + neutrons

7. Reading the periodic table

8. Isotopes
Atoms of the same element with a different # of neutrons

9. Chemical Compounds
When two or more elements combine in definite proportions

10. Checkpoint What information is contained in a chemical formula?
C6H12O6

11. Chemical Bonds
Ionic bonds – one or more electrons are TRANSFERRED (strongest type of bond)

12. Chemical Bonds cont.
Covalent bond – electrons are SHARED between atoms

13. Chemical bonds cont.
Van der Waals forces – slight attraction between oppositely charged regions of nearby molecules