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Chemistry > Ions Polyatomiques > Flashcards

Ions Polyatomiques Flashcards

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1
Q

What is the chemical formula for formate?

A

HCOO-

Formate is the anion derived from formic acid.

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2
Q

What is the chemical formula for acetate?

A

C2H3O2-

Acetate is the anion derived from acetic acid.

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3
Q

What is the chemical formula for propanoate (or propionate)?

A

C3H5O2-

Propanoate is the anion derived from propanoic acid.

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4
Q

What is the chemical formula for lactate?

A

C3H5O3-

Lactate is the anion derived from lactic acid.

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5
Q

What is the chemical formula for benzoate?

A

C7H5O2-

Benzoate is the anion derived from benzoic acid.

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6
Q

What is the chemical formula for tartrate?

A

C4H4O6^2-

Tartrate is derived from tartaric acid.

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7
Q

What is the chemical formula for oxalate?

A

C2O4^2-

Oxalate is the anion derived from oxalic acid.

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8
Q

What is the central atom in the permanganate ion?

A

Manganese (Mn)

Permanganate ion has the formula MnO4-.

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9
Q

What is the chemical formula for chromate?

A

CrO4^2-

Chromate is a polyatomic ion containing chromium.

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10
Q

What is the chemical formula for dichromate?

A

Cr2O7^2-

Dichromate contains two chromium atoms.

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11
Q

What is the chemical formula for cyanide?

A

CN-

Cyanide is a highly toxic ion.

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12
Q

What is the chemical formula for carbonate?

A

CO3^2-

Carbonate is a common anion found in many minerals.

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13
Q

What is the chemical formula for bicarbonate?

A

HCO3-

Bicarbonate is also known as hydrogen carbonate.

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14
Q

What is the chemical formula for ammonium?

A

NH4+

Ammonium is a positively charged polyatomic ion.

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15
Q

What is the chemical formula for nitrite?

A

NO2-

Nitrite is derived from nitric acid.

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16
Q

What is the chemical formula for nitrate?

A

NO3-

Nitrate is a common ion in fertilizers.

17
Q

What is the chemical formula for phosphate?

A

PO4^3-

Phosphate is essential for biological molecules.

18
Q

What is the chemical formula for sulfate?

A

SO4^2-

Sulfate is found in many minerals and industrial applications.

19
Q

What is the chemical formula for hydroxide?

A

OH-

Hydroxide is a common base in chemistry.

20
Q

What is the chemical formula for thiocyanate?

A

SCN-

Thiocyanate is used in various chemical reactions.

21
Q

What is the chemical formula for hypochlorite?

A

ClO-

Hypochlorite is commonly used as a disinfectant.

22
Q

What is the chemical formula for chlorate?

A

ClO3-

Chlorate is used in herbicides and explosives.

23
Q

What is the chemical formula for perchlorate?

A

ClO4-

Perchlorate is a strong oxidizer.

24
Q

Fill in the blank: An _______ is a negatively charged ion.

A

anion

Anions are formed when atoms gain electrons.

25
Q

Fill in the blank: A _______ is a positively charged ion.

A

cation

Cations are formed when atoms lose electrons.

26
Q

True or False: An allotrope is a different form of the same element.

A

True

Examples include graphite and diamond, which are both forms of carbon.

27
Q

What does amphoteric mean?

A

Can act as both acid and base

Amphoteric substances can react with both acids and bases.

28
Q

What is electronic affinity?

A

Energy change when an electron is added

It is a measure of how much an atom wants to gain an electron.

Chemistry (1 decks)

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