1.1 Flashcards

1
Q

beth yw moleciwl

A

mwy nag un atom wedi’in bondio’n gemegol .Nid oes angen iddynt fod yn atomau gwahanol.EE O2

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2
Q

Beth yw elfen

A

un math o atom

(EE.Carbon,Ocsigen,Nirogen.)

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3
Q

beth yw cymysgedd

A

mwy nag un elfen sefheb di bondio’n cemegol.

(EE,tywod+halen)

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4
Q

beth yw cyfansodddyn

A

Dau neu mwy gwahanol elfen sef wedi bondio’n cemegol

(EE.H2O,CO2,NaCl)

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5
Q

Beth yw Atom

A

Bloc adeiladu sylweddau cemegol rhan lleiaf o mater.

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6
Q

Beth yw Ion

A

atom sydd wedi ei wefru
(colli neu enill electron)
(EE,cu2+,Cl-)

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7
Q

be sydd yn bondio mewn bond cofalant

A

anfetal+anfetal

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8
Q

be sydd yn bondio mew bond metelig

A

anfetal+metal

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9
Q

mae ionau anfetak yn newid ei rhan olaf eu enw i ………….. pan fyddynt yn bondio

A

id

EE.sodiwm + clorin –> sodiwm clorid

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10
Q

mae anfetelau ynghyd ag ocsigen i ffurfio ion negatif yn newid rhan olaf eu enw i ……..

A

ad

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11
Q

beth yw gwefr yr ionau yn y grwpiau yma
1
2
3
6
7

A

1 +1
2 +2
3 +3
6 -2
7 -2

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12
Q

beth yw fformiwla ionau amoniwm

A

NH4+

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13
Q

beth yw fformiwla ionau hydrocsid

A

OH-

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14
Q

beth yw fformiwla ionau Nitrad

A

NO3-

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15
Q

beth yw fformwla ionig carbonad

A

CO₃²⁻

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16
Q

beth yw fformiwla ionig sylffad

A

SO₄²-

17
Q

beth yw OILRIG

A

ocsidation is loss
reduction is gain

18
Q

beth yw rheolau rhifau ocsidiad

A