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Products from rocks
What do we call the compounds that contain only carbon and hydrogen atoms?
Which of the following describes the top of an oil fractionating column?
It's hotter than the bottom of the column.
It's colder than the bottom of the column.
It's the same temperature as the bottom of the column.
What happens to a liquid during its separation from a mixture by distillation?
Condensing followed by evaporating
Evaporating followed by condensing
Evaporating followed by freezing
In comparison with large hydrocarbons, how would you describe small hydrocarbons?
They are more viscous.
They are less flammable.
They are more volatile.
What is the general formula for alkanes?
How can alkanes be described?
They are saturated.
They are unsaturated.
They are sedimented.
Which gas is not formed by the combustion of hydrocarbons?
Which of these gases is mainly responsible for acid rain?
What is caused by the release of carbon dioxide into the atmosphere?
What causes global dimming?
The Sun releasing less energy
The Earth moving away from the Sun
Particles from burning fuels being released