Dŵr

Dŵr

8th - 10th Grade

15 Qs

quiz-placeholder

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20 first elements

20 first elements

8th Grade

15 Qs

Dŵr

Dŵr

Assessment

Quiz

Chemistry

8th - 10th Grade

Practice Problem

Hard

Created by

E Evans

Used 46+ times

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15 questions

Show all answers

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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