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OCR A-LEVEL CHEM A > 2.3 formulae and equations > Flashcards

2.3 formulae and equations Flashcards

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1
Q

metals form _____ ions because they ______ electrons

A

metals from cations becuase they lose electrons

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2
Q

non metals form _____ ions because they ______ electrons

A

non metals form anions ions because they gain electrons

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3
Q

define a binary compound

A

contains only 2 elements

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4
Q

define polyatomic ions

A

ions that contain atoms of more than one element bonded together eg. hydroxide OH-

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5
Q

whats the formula and charge ammonium

A

NH4(+)

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6
Q

whats the formula and charge hydroxide

A

OH(-)

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7
Q

whats the formula and charge carbonate

A

CO3(2-)

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8
Q

whats the formula and charge nitrate

A

NO3(-)

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9
Q

whats the formula and charge nitrite

A

NO2(-)

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10
Q

whats the formula and charge hydrogen carbonate

A

HCO3(-)

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11
Q

whats the formula and charge sulfate

A

SO4(2-)

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12
Q

whats the formula and charge phosphate

A

PO4(3-)

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13
Q

whats the formula and charge dichromate

A

Cr2O7(2-)

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14
Q

whats the formula and charge hydrogen carbonate

A

HCO3(-)

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15
Q

whats the formula and charge thiosulfate

A

S2O3(2-)

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16
Q

whats the formula and charge ethanoate

A

CH3COO(-)

17
Q

whats the formula and charge manganate

A

MnO4(-)

18
Q

what are the diatomic molecules

A

H2 N2 I2 F2 O2 Cl2 Br2

19
Q
A

OCR A-LEVEL CHEM A (36 decks)

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