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the air and oxygen

what is the air made up of 21% oxygen, 78% nitrogen, 1% other gases
what gas is used up when burning occurs oxygen
what substance is used to test for water vapour anhydrous copper sulfate or colbalt chloride paper
what color does colbalt chloride paper turn when in the presence of waer from blue to pink.
what is oxygen made by in a lab the decomposing of hyrogen peroxde using magnesium dioide as a catalyst
what is a catalyst it speeds up reactions
name the characteristics of oxygen colourless, odourless, tastless, gas, slightly solublke in water, supports combustion very well.
what is the prosses of forming carbonic acid from oxygen burn carbon in oxygen to form carbon dioxide, then ad water and leave.
what is hte process of forming magnesium hydroxide from oxygen burn magnesium in oxygen and add water
what is oxygen used for? medicinf, burning, welding, space rockets.
Created by: rbowen2018