Y Gyfres Actifedd

Y Gyfres Actifedd

9th Grade

10 Qs

quiz-placeholder

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Y Gyfres Actifedd

Y Gyfres Actifedd

Assessment

Quiz

Chemistry, Science

9th Grade

Practice Problem

Hard

Created by

B Yapp

Used 2+ times

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10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Pa wefr sydd gan niwtronau?

positif

negatif

niwtral

dim wefr

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sawl electron sydd gan sylffwr

16

32

48

2

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Sut ydym yn cyfrifo nifer y niwtronau sydd gan elfen?

Rhif atomig

Rhif mas

Rhif mas - Rhif atomig

Rhif atomig - Rhif mas

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pam mae potasiwm yn dadleoli sodiwm?

Mae potasiwm yn llai adweithiol

Mae sodiwm yn fwy adweithiol

Mae potasiwm yn fwy adweithiol

Mae'r ddau gyda'r un adweithedd

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pa elfen sy'n hydoddi i siap pel wrth adweithio gyda dwr?

Lithiwm

sodiwm

potasiwm

magnesiwm

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pa gronyn sydd ddim yn y niwclews?

Electron

Proton

Niwtron

Photon

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Pa nwy sy'n ffurfio wrth i fetelau adweithio a dwr?

carbon deuocsid

ocsigen

hydrogen

amonia

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