Fuels and Atmosphere Flashcards
If i burn C02 in a 100cm3 tube of air and end up with 80cm3, how much O2 is in the air?
100-80=20
20/100 x 100 =20%
The air is 20% oxygen
Complete Copper+Oxygen
Copper Oxide
CuO because the charges cancel out
How can i test for 02 in the lab?
By using a glowling splint and seeing if it relights itself
How to test for CO2 in the lab?
If a lit splint goes out or limwater goes cloudy from colourless
What are the names of the 4 layers in the earths atmosphere?
Tro`posphere
Stratosphere
Mesophere
Thermosphere
Does oxgen support combustion?
Yes but carbon dioxide and Nitrogen dont
What are the three fossil furls and what is stored inside of them?
Natural Gas
Oils CarbonDioxide is
Coal stored inside all of them
All Hydrocarbons, contain only hydrogen and carbon
Which gases where present in Earths early atmosphere?
Hydrogen and Helium, no oxygen
True OR False
oxygen was released by volcanoes?
False
They were released by early bacteria thru photosynthesis and later on primitive plants
What is causing atmospheric CarbonDioxide levels to rise in our modern atmosphere?
The burning of fossil fuels for energy.
Last 200 yrs theres been a rise in CO2 levels
What fas us dissolved in oceans?
CO2, eg in fizzy drinks CO2 is dissolved in that
Name the process that releases oxygen?
Chemical equation and word
Photosynthesis
6CO2 + 6H2O —–> 6O2 + C6H12O6
Carbon Dioxide +Water—>Oxygen+Glucose
Once there was enough oxygen, what evolved next?
Primitive plants
Which 4 gases where released into the atomosphere by volcanoes in early earth?
Nitrogen N2
Carbon Dioxode CO2
Methane CH4
Water Vapour H2O (g)
What did commets bring to earth?
Water
Commets are made from ice dust and rocks so the ice melted and it was water
Equation to show full combustion of Hydrocrbons
Balanced
Eg. Propane
Propane + Oxygen –> Carbon Dioxide + water
C3H8+5O2–>3CO2+4H20
Testing for water Vapour
Cobalt Chloride Paper should turn from blue to pink
When hydrocarbons are burnt, where does all the locked up carbon go?
Into our atmosphere
What is the source of and harmful effects of:
Carbon Dioxide CO2
Burning fossil fuels, ACR
enhances green house effect
What is the source of and harmful effects of:
Sulfur Dioxode SO2
Cars
Cause acid rain
What is the source of and harmful effects of: Methane
CH4
Intensive cow farming, rice paddies
Enahcnes green house effect
What is the source of and harmful effects of: Carbon Monoxide
CO
Released when fossil fuels do incomplete combustion
Can cause death by replacing oxygen in blood
Particulate Pollants
Lead used in paint. burning fossil fuels
Nerve damage
