Violent explosions happened in AQA AS ISAWatch
Did this happen to anyone else? Do my details match yours? How much solution X were you given? Ours filled up I think about half or a third of a boiling tube.
It happens when compound X has been mixed with a solution and is being "gently heated" by bunsen burners. Note you're told you have to put in THE sample of compound X, not A sample, so it doesn't seem to be a student mistake. A few people's exploded with a force that knocked its beaker over and fired the solution up in the air.
One person hadn't even begun heating it yet.
I was confident I could get away with not heating it, because pouring compound X made the solution very hot anyway. I won't say whether I was right or not in case that counts as cheating, even if it might save someone's face.
I honestly don't know. I suppose it's down to the school to decide the procedure they'll follow. My chemistry department are going to trial it without a Bunsen burner and see if that makes a difference.
I'm doing the whole isa in one day (practical and written), so If someone could shed a little light on what I might want to revise in anticipation please...
The aim of this task is to investigate Group 2 metal compounds by a series of observation exercises. - The main areas of the specification in the Written Test include Section 3.1.2 (Amount of Substance), Section 3.2.5 (Group 7 (17), the Halogens) and Section 3.2.6 (Group 2, the Alkaline Earth Metals).