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bb Flashcards

1
Q

what is combustion

A

a substance heated in the presence of oxygen to form one or more new substances

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2
Q

pretrol + Oxygen(heat) =

A

carbon dioxide + water

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3
Q

carbon + Oxygen(heat)=

A

Carbon dioxide

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4
Q

Sulfur + oxygen(heat)=

A

sulfur oxide

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5
Q

What is thermal decomposition?

A

A process which a substance is broken down into simpler substances by the effect of heat

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6
Q

sugar(heat)=

A

Carbon + water vapour

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7
Q

metal carbonate(heat)=

A

Metal oxide + carbon dioxide

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8
Q

calcium carbonate=

A

calcium oxide+ Carbon dioxide

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9
Q

what is oxidation

A

A chemical change in which a substance gains oxygen.

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10
Q

iron + oyxgen+ water=

A

hydrated iron(iii) oxide

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11
Q

what is an acid?

A

A substance which produces hydrogen ions, H+ when dissolved in water.

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12
Q

hydrochloric acid

A

HCL

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13
Q

Nitric acid

A

HNO3

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14
Q

Sulfuric acid

A

H2SO4

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15
Q

what are bases?

A

Bases can react with acids to neutralise them

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16
Q

what are alkalis

A

Alkalis are soluble bases that produces hydroxide ion, H- when dissolved in water.

17
Q

Sodium Hydroxide

A

NaOH

18
Q

Potassium hydroxide

A

KOH

19
Q

Calcium hydroxide

A

CA(OH)2

20
Q

acid + metal=?

A

Salt + hydrogen gas

21
Q

acid + carbonate?

A

Salt + carbon dioxide gas + water

22
Q

acid + base

A

Salt + water

23
Q
A

hh (2 decks)

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