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What is unleaded low sulfur fuel
Fuel that doesn't have lead and is low in sulfur. Much better for the environment
is the reaction that forms slacked lime endothermic or exothermic?
Exothermic (gives off heat)
Is the reaction that forms quicklime endothermic or exothermic
endothermic
What happens when you add water to limestone
Nothing. Limestone needs to be heated to turn into quicklime. Once water is added to quicklime slacked lime is produced
How do you get slacked lime Ca(OH)2 from quicklime CaO
Adding water
How do you get quicklime (CaO) from limestone (CaCO3)
Heating limestone --> quicklime
What are heavy metals
metals with high density that are toxic at low concentrations
Name 2 fossil fuels
coal, oil, natural gas
Name 2 ways methane is released into the environment
Cows, Rice fields, landfills
Name 2 ways we can reduce the amount of CO2 released into the environment
alternative transportation, planting trees, burning less fossil fuels
Name 2 ways we release Carbon Dioxide into the environment
Burning fossil fuels, cars, respiring, cutting down forests
This gas is 20x more effective at trapping heat than Carbon dioxide is
Methane CH4
Name an impact of global warming
Sea level rise, deserts spread, severe weather
Explain the greenhouse effect
pollutants in our atmosphere trap heat inside causing the earth to warm, like a greenhouse (CH4, CO2, NOx)
Which pollutants contribute to global warming?
Nitrogen oxides, carbon dioxide, methane
Which pollutants contribute to photochemical smog?
Nitrogen oxides, carbon monoxide and unburnt hydrocarbons
A catalytic converter converts nitrogen dioxide and carbon monoxide into what?
Nitrogen and Carbon Dioxide
This gas binds to hemoglobin in blood, which can lead to death
Carbon monoxide
The hotter an engine the more NOx produced. T or F
T. More reactions of oxygen with Nitrogen occur producing more NOx
Name a way to reduce acid rain or its effects
Scrubbers. Adding lime to water bodies
What is a negative effect of acid rain
Breaks down limestone buildings, makes water bodies acidic, kills trees. Sulfate reacts with aluminum damaging tree roots and fish gills
What two gases cause acid rain
SO2 and NOx. Sulfur dioxide and oxides of nitrogen
What is the main source of the release of problem gases into the atmosphere
burning of fossil fuels
What is a use of noble gases
neon signs
What is a use of pure oxygen
Making steel, oxygen tanks
What is a use of Nitrogen
Produce ammonia, fertilizers, fill chip bags.
What makes up 0.04% of air
Carbon dioxide
what makes up 21% of air
Oxygen
What makes up 78% of air
Nitrogen
What is the benefit of the honeycomb in a catalytic converter
increases surface area. More reactions take place. More harmful gases are converted
Give an example of a hydrocarbon
methane, propane, butane, hexane
What are hydrocarbons
Compound composed exclusively of hydrogen and carbon.
How is carbon monoxide made
Incomplete combustion of hydrocarbons
What does CO stand for
Carbon Monoxide


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