J. j. thompson's experiments led to the discovery of negatively charged particles. what were the negatively charged particles that thompson discovered?

Can someone me with 6 to 10 plz this is for masteries test.

‘which reaction would most likely require the use of an inert electrode?

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?