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CARBON!!. I. Let’s Talk About . Carbon atoms have: 6 protons 6 neutrons 6 electrons (when neutral). Carbon atoms have 4 valence electrons, and they are all single. Carbon atoms will always make 4 bonds. There are lots of ways to do this: 4 single bonds OR

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i let s talk about

CARBON!!

I. Let’s Talk About

  • Carbon atoms have:
    • 6 protons
    • 6 neutrons
    • 6 electrons (when neutral)
carbon atoms have 4 valence electrons and they are all single
Carbon atoms have 4 valenceelectrons, and they are all single
  • Carbon atoms will always make 4 bonds. There are lots of ways to do this:
    • 4 single bonds OR
    • 2 singles and 1 double OR
    • 2 doubles OR
    • 1 single and 1 triple
ii so how does carbon work
II. So how does Carbon work?

A. There are many different forms:

  • Graphite
slide7

B. Carbon in Compounds

  • A hydrocarbon is a compound containing the elements carbon and hydrogen
  • Carbon forms the skeleton of each molecule
  • The hydrogens collect on the outside
slide8

C2H6

CH4

C4H10

C3H8

c naming hydrocarbons
C. Naming Hydrocarbons
  • If all the carbons are single bonded, the skeleton is holding as many hydrogens as it can, so it is saturated  we call this type of hydrocarbon an alkane
  • The prefix is based on the number of carbon atoms
  • If it is saturated, the ending is “-ane”
name the following
Name the following:

1. CH4

2. C2H6

3. C3H8

4. C4H10

5. C6H14

6. C8H18

Methane

Ethane

Propane

Butane

Hexane

Octane

what happens if we add a double or triple bond we call them unsaturated
What happens if we add a double or triple bond? We call them unsaturated
  • Alkenes - hydrocarbons containing a double bond
  • Alkynes - hydrocarbons containing a triple bond

Ethyne

Ethane

Ethene

Propene

e properties of hydrocarbons
E. Properties of hydrocarbons
  • Because they are nonpolar they don’t dissolve in water.
  • The forces that hold them together are weak so most are gases or volatile liquids at room temperature.
  • Many are flammable - coooool!
f is there only one way to make c 4 h 10 no
F. Is there only one way to make C4H10? NO!
  • These are the two isomers of C4H10
g carbon chains
G. Carbon chains
  • How many bonds does carbon like to make?
  • 4
  • Carbon is good at making long chains also. This results in many properties:
    • Elastic - able to stretch and return to original shape
    • No definite melting point
    • Able to take any shape
g carbon chains1
G. Carbon Chains
  • Examples of polymers:
    • Plastic and rubber
  • Biological molecules like proteins , fats and starches