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Chemistry Edexcel iGCSE > Inorganic Chemistry > Flashcards

Inorganic Chemistry Flashcards

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1
Q

What are three characterists of the Alkali metals?

A

all have one electron in their outer shell
low density
stored under oil
are soft

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2
Q

How do group 1 elements react with non-metals?

A

form ionic compounds wihch are soluble white solids which form colourless solutions

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3
Q

How do group 1 elements react with water?

A

release hydrogen gas and form hydroxides which dissolve to form alkaline solutions

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4
Q

State five characteristics of group 7

A 
7 electrons in outer shell
coloured vapours
diatomic molecules
form ionic salts with metals
form molecular compounds with non-metals
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5
Q

What is an oxidising agent?

A

a species that gets reduced in a redox reaction (gains electrons)
causes the oxidation of another substance

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6
Q

What is a reducing agent?

A

a speices that gets oxidised in a redox reaction (loses electrons)
causes the reduction of another substance

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7
Q

What are the flame test colours of lithium, sodium, potassium, calcium and copper?

A 
lithium - crimson red
sodium - yellow-orange
potassium - lilac
calcium - orange-red
copper - blue-green
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8
Q

What is oxidation?

A

the additon of oxygen to a substance

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9
Q

What is reduction?

A

the loss of oxygen from a substance

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10
Q

What is a displacement reaction?

A

a reaction where a more reactive metal displaces a less reactive metal in a compound

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11
Q

What is the general equation for a neutralisation reaction?

A

acid + base –> salt + water

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12
Q

What is the general equation for the reaction between metal carbonate and acid?

A

metal carbonate + acid –> salt + water + carbon dioxide

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13
Q

What is the general equation for the reaction between metal oxide and acid?

A

metal oxide + acid –> salt + water

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14
Q

How do you test for hydrogen?

A

‘pop’ heard when burning splint is placed over the gas

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15
Q

How do you test for oxygen?

A

glowing splint relights

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16
Q

How do you test for carbon dioxide?

A

turns limewater - calcium hydroxide milky

17
Q

How do you test for chlorine?

A

bleaches damp litmus paper and makes it white

18
Q

What are the results of Copper(II), Iron(II) and Iron(III) when sodium hydroxide is added?

A

copper(II) - blue precipitate
Iron(II) - green precipitate
Iron(III) - brown precipitate

19
Q

What are the results of adding sodium hydroxide to Aluminium, Calcium and magnesium?

A

form white precipitates

20
Q

Describe the test for carbonate anions

A

add dilute acid (such as HCl)

fizzing is observed

21
Q

What is the sulfate test?

A

add a solution containing barium cations

white precipitate of BaSO4 forms

Chemistry Edexcel iGCSE (4 decks)

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