S2 Chem Test 2 Flashcards
What do crude oil and natural gas consist of
Compounds called hydrocarbons
what do hydrocarbons contain
The elements carbon and hydrogen
What is crude oil a mixture of?
Hydrocarbons
What does fractional distillation do.
Used to separate substances with differnt boiling point s
What separates crude oil into fractions
Fractional distillation
What is a fraction
A group of hydrocarbons with boiling points within a specific range
What do fractions differ in
Boiling points
Viscosity
Flammability
Name 2 pollution problems associated with burning fossil fuels
Global warming
Acid rain
What produces carbon monoxide?
Burning fossil fuels
What causes acid rain
Sulphur dioxide
Nitrogen dioxide
Carbon dioxide
Dissolves into the water in the atmosphere
What are the effects of acid rain
Kills fish and river creatures because the water becomes acidic
Erodes buildings
Destroys plant life
How is sulphur dioxide produced
When some fossil fuels are burnt they have sulphur impurities
How is nitrogen produced
Sparking of air in a petrol car
How do u reduce pollution
Using a catalytic converter
What is photosynthesis
The process by which plants make carbohydrates from carbon dioxide and water using light energy in the presence of chlorophyll
