Chapter 3 notes Part 3 : Finding the culprit gases!
Some gases found in our atmosphere:
Which are possible greenhouse gases?
After we finish these notes, you should be able to go
MEASUREMENTS Know the fundamental SI units for: Time second s Mass kilogram kg Distance meter m Temperature Kelvin K Know ALL the metric prefixes! (pico (p) is missing from your book it is 1x10-12 ) All English Metric conversions will be given on exams. B
VSEPR Theory = Valence Shell Electron Repulsion Theory
- bonds and lone pairs repel- keep them apart. This
determines the likely shape of a molecule.
USING VSEPR THEORY:
1. Draw correct Lewis dot structure for molecule or ion
2. Count RHED around central
STOICHIOMETRY: INTERPRETING BALANCED EQUATIONS
can also be read:
two MOLES hydrogen
one MOLE oxygen
two MOLES water
It DOES NOT mean:
2 grams of hydrogen
1 gram of oxygen
Interaction of Light with Matter
ELECTRONIC TRANSITIONS: VISIBLE:
Electrons move between orbitals of different energy: give rise to emission/absorption spectra
BOND BREAKING (CLEAVAGE): UV :
Bonds between atoms break
Both discussed in Chapter 2.
Chapter 4: Energy from Combustion:
How we generate energy
How thermodynamics affect this
Fuel sources. and alternates
Energy : The CAPACITY to do work or supply heat
WORK, w: motion against a restraining force w = Force x Distance
HEAT, q: energy that flo
Mitigating Climate Change Consider This 3.27
Actions taken to try and reduce risk to life, property & the environment
Fig 3.21: Mitigation includes reducing any/all of these causes of CO emissions
There are NO quick solutions that everyone agrees upon.
Chapter 3 notes part 5
NOT easy! Earths climate is large and extremely complex!.
(RADIATIVE) FORCINGS: Fig 3.25
Factors affecting incoming and outgoing radiation
Negative forcings COOL
Positive forcings WARM
Forcings can be Natural or A
Chapter 3 notes part 4
Quantifying Carbon Emission & Uptake
Reconsider Table 3.2, page 135 - Note the errors! Recall G = giga = 1 x 109
Its easier to get an accurate idea of amounts of fossil fuels burned (as opposed to other processes) - just get industr
Chapter 1 Notes part 2
- where did the pollutants come from?
- how do they act as pollutants?
A lot of the USs pollution comes from:
energy generation or
Pollution from Energy Generation:
Burn coal: makes energy. Use to gen