what is a hydrocarbon
a compound that contains hydrogen and carbon only
what is crude oil
a mixture of hydrocarbons, and a mix of a liquid, solid and gas
what is natural gas
mixture of the gas hydrocarbons and can be found underground
how to extract elements from crude oil
fractional distillation
what are fossil fuels
made form remains of organisms that died millions of years ago
what are oils and natural gas made from
formed from tiny minerals and plants that lived in the sea millions of years ago
why is crude oil important
crude oil is a finite recource and will result in depletion in the future
what is coal made from
formed millions of years ago from plants that were buried in mud to prevent them from rotting away
what is ionic bonding
attraction between positively and negatively charged ions
what is an atom
smallest unit of a chemical element
what is an ion
a particle formed when an atom or molecule gains or loses electrons
positive answer in bond energy equations is
endothermic
negative answer in bond energy equations is
exothermic
when energy goes out
exo
when energy goes in
endo
what is an exothermic reaciton
chemical reaction that releases energy usually in form of heat
what is an endothermic reacion
energy is taken in resulting in decrease of temperature
