The Student Room Group
Reply 1
well for the metal cups bit...because metal is a good conductor of heat thus the cup will warm up and that is not a very practical use as you dont wanna hold a cup which will get warmer and warmer until you cant hold it..
Reply 2
jdel54
hey just a queztion!! how is food heated up in an oven?? by radiation isn´t it from the metal...also why are not metal cups constructed to serve hot drinks?



Hey, how did you find this exam? It was quite easy ^^ I put radiation because there was no contact between the metal bar and the food. There might a lot on chemistry and physics on the next exam, since this one had a lot of biology questions xD Don't you think so?

Do you have the boundaries for this exam?
Reply 3
In an electrolysis battery, when hydrogen is formed, is formed at the cathode??.... isn´t it???
Hydrogen becomes a H+ ion so it is formed at the negative electrode which is the Cathode

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