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Chemistry GCSE > Formulae > Flashcards

Formulae Flashcards

1
Q

What are positive ions?

A

Cations that have lost one or more electrons

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2
Q

What is the chemical symbol for ammonium?

A

NH₄⁺

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3
Q

What is the chemical symbol for hydrogen?

A

H⁺

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4
Q

What is the chemical symbol for lithium?

A

Li⁺

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5
Q

What is the chemical symbol for sodium?

A

Na⁺

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6
Q

What is the chemical symbol for potassium?

A

K⁺

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7
Q

What is the chemical symbol for silver?

A

Ag⁺

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8
Q

What is the chemical symbol for barium?

A

Ba²⁺

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9
Q

What is the chemical symbol for calcium?

A

Ca²⁺

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10
Q

What is the chemical symbol for copper (II)?

A

Cu²⁺

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11
Q

What is the chemical symbol for iron(II)?

A

Fe²⁺

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12
Q

What is the chemical symbol for lead(II)?

A

Pb²⁺

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13
Q

What is the chemical symbol for magnesium?

A

Mg²⁺

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14
Q

What is the chemical symbol for zinc?

A

Zn²⁺

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15
Q

What is the chemical symbol for aluminium?

A

Al³⁺

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16
Q

What is the chemical symbol for iron(III)?

17
Q

What are negative ions?

A

Atoms which have gained electrons and now have neutral charge (called annions)

Examples include chloride, bromide, iodide, hydroxide, nitrate, oxide, carbonate, and sulfate.

18
Q

What is the charge of chloride?

A

1-

Chloride is a common anion.

19
Q

What is the chemical formula for hydroxide?

A

OH-

Hydroxide is an important ion in many chemical reactions.

20
Q

What is the charge of bromide?

A

1-

Bromide is another type of anion.

21
Q

What is the chemical formula for nitrate?

A

NO3-

Nitrate is often found in fertilizers.

22
Q

What is the charge of iodide?

A

1-

Iodide is an anion derived from iodine.

23
Q

What is the chemical formula for oxide?

A

O2-

Oxide is a common anion formed when oxygen gains electrons.

24
Q

What is the chemical formula for carbonate?

A

CO₃²⁻

25
Q

What is the charge of sulfate?

A

2-

Sulfate is commonly found in various minerals.

Chemistry GCSE (16 decks)

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