5436174
Descrição
FlashCards por tamaraappiah, atualizado more than 1 year ago
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Criado por tamaraappiah
quase 8 anos atrás
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| Questão | Responda |
| what does the boiling point and viscosity of a hydrocarbon depend on? | the number of carbon atoms it contains |
| what happens to the boiling point and viscocity when the number of hydrocarbons increase? | they both increase |
| what does the furnace do in relation to crude oil? | heats up the crude oil and turns it into gas |
| what hydrocarbons are found in refinery gas? | ethane, propane and butane |
| how is limestone formed in animals? | CO2 dissolves in water, used by animals to make shells, dead animals leave shells, shells converted to CaCO3 over a long time period |
| what belief does the red shift support? | supports the belief that stars and galaxies are moving further away from the earth and that the universe is expanding |
| how does energy enter the food chain? | it enters as light when plants photosynthesise |
| how does energy leave the food chain? | energy is lost as heat - in respiration, chemical energy, waste |
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