Electrolysis

Quiz
•
Chemistry
•
6th - 10th Grade
•
Hard
E Evans
Used 41+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At ba electrod bydd yr ionau positif yn symud?
Catod
Anod
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ym mha ffurf/iau bydd electrolysis yn gweithio gyda chyfansoddyn ionig
Powdwr
Solid
Hydoddiant
Hylif
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Beth yw enw cemegol alwmina?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pam bod ionau'n symud at yr electrodau?
Mae'n nhw'n tryledu
Mae'r gwefrau'n cael eu hatynnu
Mae gronynnau hylif yn symud
Mae disgyrchiant yn eu tynnu
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ar y catod (-) mae ionau alwminiwm yn cael eu troi'n atomau. Dewiswch yr hafaliad cywir.
Al3+ - 3e- --> Al
Al3+ + 3e- --> Al
Al3+ + e- --> Al
Al3+ - e- --> Al
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Ar y catod (-) mae ionau ocsid yn cael eu troi'n ôl i ocsigen. Dewiswch yr hafaliad/aucywir.
O2- --> O + 2e-
O2- + 2e- --> O
2O2- --> O2 + 4e-
2O2- + 4e- --> O4
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Nid oes modd defnyddio carbon i echdynnu alwminiwm gan fod carbon yn rhy _____________
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