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y1 chemistry > Oxides > Flashcards

Oxides Flashcards

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1
Q

What is an amphoteric oxide?

A

An oxide that reacts with both acids and bases to produce a salt and water.

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2
Q

Carbon monoxide (CO) is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

Neutral

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3
Q

Carbon dioxide (CO2) is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

Acidic (forms carbonic acid, H2CO3 in water)

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4
Q

Sulfur dioxide (SO2) is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

Acidic (forms sulfurous acid, H2SO3 in water)

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5
Q

Sulfur trioxide (SO3) is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

Acidic (forms sulfuric acid in water)

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6
Q

Aluminium oxide is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

amphoteric

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7
Q

Zinc oxide is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

amphoteric

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8
Q

Lead (II) oxide is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

amphoteric

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9
Q

Dinitrogen oxide (nitrous oxide, N2O) is a ________ (acidic/basic/neutral/amphoteric) oxide.

A

neutral

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10
Q

Generally, neutral oxides contain how many oxygen atoms?

A

1

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11
Q

Generally, acidic oxides contain how many oxygen atoms?

A

More than one

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12
Q

*this question might be out of syllabus
Silicon dioxide is an ______oxide with a ______ melting point.

A

Acidic oxide, as it is a non-metal oxide. It has a high melting point as it forms a giant molecular structure.

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13
Q

How do you test for ammonia gas?

A

Ammonia gas is recognised by a characteristic pungent smell. When moist red litmus paper is added, it turns blue.

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14
Q

What is produced when an alkali is heated with an ammonium salt?

A

A salt, water and ammonia gas

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15
Q

What is produced when an alkali reacts with a metal salt?

A

A different metal hydroxide and a different metal salt?
e.g. 2 NaOH + FeSO4 -> Fe(OH)2 + Na2SO4

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16
Q

*What is produced when aqueous ammonia, which is an alkali, reacts with an acid?

A

Only an ammonium salt is produced.
e.g. NH3 (aq) + HCl (aq) -> NH4Cl (aq)

17
Q

*Write the equation for the ionisation of aqueous ammonia in water

A

NH3 (aq) + H2O (l) <-> (reversible) NH4+ (aq) + OH- (aq)

y1 chemistry (12 decks)

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