Chemistry 8.12.19 0.0 / 5 ? Chemistryeverything learn't so farGCSEAll boards Created by: Bobbyel11Created on: 08-12-19 10:26 how do we know when there has been a chemical reation new substance e.g colour change/fizzing, energy transfered to/from surroundings e.g heat/ kenetic energy/sound energy, reaction not easily reversed 1 of 12 what is a chemical reaction a reaction that can not be easily reversed 2 of 12 what is a physical reaction a reaction that can easily be reversed 3 of 12 what happens with magnesium and sulphuric acid metal dissolved, magnesium gives a little popas hydrogen built in test tube, magnesium and sulphuric acid make magnesium sulphate and hydrogen 4 of 12 what happens with zinc and sulphuric acid bubbles steadily, zinc disolves slowly 5 of 12 what happens with copper and sulphuric acid no reaction 6 of 12 what are the three parts of the fire triangle fuel,heat,oxygen 7 of 12 what is another name for burning combustion 8 of 12 what colourless liquid forms when methanol burns water 9 of 12 what is the gas that turns to lime water cloud when methanol burns corbon dioxide 10 of 12 what is the word equation for how magnesium chloride is formed magnesium +hydrochloric acid (arrow) magnesium chloride+HO1 11 of 12 will a candle with more oxygen stay lit for longer than one with less oxygen yes because u take away one part of the fire triangle (oxygen) when the oxygen is all used up, so the one with less oxygen would go out quicker 12 of 12
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