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Chemistry > 1.1 Formulae and Equations > Flashcards

1.1 Formulae and Equations Flashcards

1
Q

The formulae for this common compound: Water

A

H 2 O

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2
Q

The formulae for this common compound: Sulphur dioxide

A

SO2

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3
Q

The formulae for this common compound: Methane

A

CH4

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4
Q

The formulae for this common compound: Ammonia

A

NH3

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5
Q

The formulae for this common compound: Sodium hydroxide

A

NaOH

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6
Q

The formulae for this common compound: Sodium carbonate

A

NaCO3

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7
Q

The formulae for this common compound: Copper(II) sulphate

A

CuSO4

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8
Q

The formulae for this common compound: Nitric acid

A

HNO3

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9
Q

The formulae for this common compound: Ethanoic acid

A

CH3COOH

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10
Q

The formulae for this common compound: Copper(II) oxide

A

CuO

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11
Q

The Formulae for this common ion: Ammonium

A

NH4+

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12
Q

The Formulae for this common ion: Lithium

A

Li+

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13
Q

The Formulae for this common ion: Magnesium

A

Mg2+

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14
Q

The Formulae for this common ion: Copper(II)

A

Cu2+

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15
Q

The Formulae for this common ion: Iron(III)

A

Fe3+

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16
Q

The Formulae for this common ion: Aluminium

A

Al3+

17
Q

The Formulae for this common ion: Fluoride

A

F-

18
Q

The Formulae for this common ion: Hydrogen carbonate

A

HCO3-1

19
Q

The Formulae for this common ion: Hydroxide

A

OH-

20
Q

The Formulae for this common ion: Sulphate

A

SO42-

21
Q

The oxidation number of group one metals is always …

A

+1

22
Q

The oxidation number of group two metals is always …

A

+2

23
Q

All group seven ions have … ions

A

1- negative

24
Q

Oxidation number

A

is the number of electrons that need to be added or taken away from an element to make it neutral

25
Q

The oxidation number of an uncombined element is always …

A

Zero

26
Q

The sum of the oxidation numbers in a compound is always …

A

Zero

27
Q

The sum of oxidation numbers in an ion is always …

A

Equal to the overall charge of the ion

28
Q

The oxidation number of oxygen is always -2 except in compounds with …

A

Fluorine

29
Q

The oxidation number of hydrogen is always +1 in compounds, except for in …

A

Metal hydrides

30
Q

Oxidation numbers are used in … reactions

A

redox

Chemistry (17 decks)

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