depend on CARBON and CHEMICAL ENERGY from FOSSIL FUELS
What are fossil fuels? Driving question
coal oil gasoline natural gas Examples of fossil fuels
Is gasoline organic or inorganic?
What we see… Macroscopic Scale GASOLINE
Gasoline (C 8 H 18 ) Zooming in… Atomic-molecular Scale
What is gasoline most similar to in terms of atoms? Water molecule (H 2 O) Ethanol molecule (C 2 H 6 O) Cellulose (C 6 H 10 O 5 ) m Gasoline (C 8 H 18 ) Carbon dioxide (CO 2 )
What is gasoline most similar to in terms of bonds? Water molecule (H 2 O) Ethanol molecule (C 2 H 6 O) Cellulose (C 6 H 10 O 5 ) m Gasoline (C 8 H 18 ) Carbon dioxide (CO 2 )
ORGANIC INORGANIC --means the molecule is CARBON-BASED --and the molecule has C-C and C-H bonds --means the molecule is not CARBON-BASED --and the molecule does not have C-C and C-H bonds Which group would gasoline fit into?
How did fossil fuels form?
Over millions of years… …coal and other fossil fuels are formed from plant materials
300 million years ago photosynthesis CO 2
300 million yrs ago photosynthesis today squished & heated CO 2 Buried Extracted from the ground Follow the carbon
How do humans use fossil fuels, and when did we begin using them? Driving question
Industrial revolution – Changes in agriculture, manufacturing, mining, transportation and technology
300 million year old organic carbon Organic fossil fuels provide stored energy for human systems
300 million year old organic carbon Combustion of fossil fuel releases CO 2 This CO 2 is called carbon emissions
Carbon emissions (CO 2 released from burning fossil fuels) are also called greenhouse gases, because they amplify the greenhouse effect.
More CO 2 in the atmosphere traps more of the sun’s energy, heating the planet