core chemistry Flashcards
fractional distillation?
separate groups of hydrocarbons in crude oil
vapourises oil then condences
ethanol ad renewable sources?
fermentation low temp sugar=carbon dioxide+ethanol renewable sugar, growth, cheap fuel, not strong concentrated
atoms?
nucleas
surrounded by electrons
protons +
nuetrons -
alloys?
mix of 2 metals to make it stronger
quarrying limestone?
causes pollution
visual mess
noisy
acid rain
extracting metals?
socially bad
environment bad
economic good
crude oil?
fuel for modern cars
petrol and diesel
cheap
what is crude oil used for?
alkanes
long chain of hydrocarbons surrounded by hydroigen atoms
polymers?
joining if lots of alkenes
into monomers
cracking crude oil?
splitting long chain of hydrocarbons
passing vapour oiver hot catalyst
how are alkenes helpful with ethanol?
react with steam, hydrated in catalyst, cheap, not wasted while producing ethanol
emulsions?
stop separating
longer shelf life
lower in fat
allergic prone
catious of ingreediants
where are alkene bonds present?
unsaturated oils
carbon atoms
wegners theory of continential drift?
tectonic plates vibrate causing a splity between countries
how can you get metals from rocks?
extraction from metal ores
chemically extracted with carbon
