Dŵr
Quiz
•
Chemistry
•
8th - 10th Grade
•
Practice Problem
•
Hard
E Evans
Used 46+ times
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15 questions
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1.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Dewiswch y sylweddau y byddech yn darganfod mewn dŵr afon
nwyon wedi hydoddi
ionau metelig e.e. Mg2+
mwd, llaid a thywod
halen
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Tua faint o'r dŵr yn y byd sy'n ddŵr croyw?
3%
25%
10%
33%
3.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Dewiswch y gweithgareddau sy'n addas ar gyfer defnyddio dŵr glaw
llenwi'r tanc yn y tŷ bach
golchi wyneb
golchi llestri
dyfrio'r ardd
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pa rhan o drin dŵr sy'n tynnu solidau mawr o'r dŵr?
Tanc gwaddodi
Hidlydd
Clorineiddiad
Fflworeiddio
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Pa rannau o driniaeth dŵr sy'n angenrheidiol?
tanc gwaddodi
hidlydd
clorineiddio
fflworideiddio
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Beth yw pwrpas clorineiddiad?
Lladd meicrobau yn y dŵr
Tynnu caledwch o'r dŵr
Lleihau pydredd dannedd
Adweithio gydag ionau peryglus fel plwm
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Pa sylweddau sy'n achosi dŵr caled?
Calsiwm Hydrogen Carbonad
Magnesiwm Sylffad
Copr Carbonad
Magnesiwm Bromid
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