Science rev y9 1st test
What is an ore?
An ore is a rock that contains enough of the metal or metal compound that is worth mining.
carbon monoxide + oxygen =
carbon dioxide
oxygen + methane =
carbon dioxide + water
octane + oxygen =
carbo dioxide + water
What type of reaction is combustion?
exothermic reaction
What do you need for a combustion to start?
heat
What is the combustion reaction a reaction of?
reaction of a chemical + oxygen
What does the combustion release?
produces fuel's oxides
What does nanotechnology do?
diagnoses, treates and prevents diseases.
What diseases does nanotechnology prevent?
cancer, cardiovascular, HIV/AIDS
What are nanoparticles made up of?
hundreds of atoms.
Nanoparticles have a huge ___________ ____ to ______ ratio
surface area, volume
What are nanoparticles used for?
catalysts, electric circuits, nanomedicine, cosmetics, antibacterial
What are the nanoparticle health risks?
Might react differently when they enter the body. We don't know the full effects. Could be transfered to bloodstream.