Impacts of uses of organic substances Flashcards
why do you need to wear safety glasses when working with organic substances?
to avoid splashes and fumes from coming in contact with the eyes
why are high quality laboratory gloves worn?
because chemicals should never be touched with bare hands
why is a lab coat worn?
to decrease the amount of bare skin that is exposed
where are chemical reagents stored?
in labelled bottles. when using them you must not play around with them and you must use the proper amounts during the experiment
where should organic liquids be discarded?
never to be poured down the drain and should be disposed separately in the waste container in the fume hood
what happens when there is incomplete burning of hydrocarbons?
carbon monoxide is formed which is a fatal gas
what is the most significant reaction that hydrocarbons undergo?
combustion
why is coal, oil and natural gas preferred over wood and peat?
they have a higher energy density than wood
why are hydrocarbon fuels called fossil fuels?
they were made from the fossilised remains of plants and animals.
what has having access to energy-dense fuels had enormous consequences on?
for human development in the economic, social and environmental spheres.
what are the negative environmental consequences of the increased burning of hydrocarbons?
smog, acid rain, the destruction of natural ecosystems and climate change.
why should organic substances be handled in a fume hood?
they are often volatile and can release toxic fumes.
where should organic liquids never be disposed of and where should they be disposed?
they should never be poured down the drain, and they should be disposed of separately in specific organic waste containers
what happens when fossil fuels are extracted from the earth to use hydrocarbons?
it is depleting a nature, finite resource and causes physical destruction to the area in which they are obtained.
what is the impact of CFCs, released by the use of some hydrocarbons?
they cause damage to the ozone layer, resulting in the increased exposure of harmful UV radiation to humans and animals from the sun.
