Chemistry Paper 1 Flashcards

1
Q

What is the top number on an element on the periodic table?

A

The relative atomic mass of

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2
Q

What is the charge and mass of a proton?

A

Charge:+1
Mass:1

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3
Q

What is the charge and mass of a neutron?

A

Charge:0
Mass:1

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4
Q

What is the charge and mass of an electron?

A

Charge:-1
Mass:1/1840

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5
Q

Which number on an element is the Proton and electron number?

A

The bottom number.

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6
Q

How do you work out the number of neutrons?

A

Top number - bottom number

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7
Q

What are isotopes?

A

Isotopes are elements with the same number of protons but a different number of neutrons.

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8
Q

What is group 1?

A

The alkali metals.
-one electron in outer shell (want to lose it)
-soft, solids,stored in oil because they’re reactive with oxygen.
-react with water to make an alkaline solution.

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9
Q

What is group 0?

A

The noble gases.
-untreated as they have a full outer shell of electrons- stable arrangement.
-gases at room temperature
-boiling points increase as you move down the group.

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10
Q

What do acids produce when dissolved in water?

A

H+ ions.

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11
Q

What do bases neutralise?

A

Acids.

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12
Q

Alkalis are soluble bases, what do they produce when dissolves in water?

A

OH ions.

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13
Q

What would pH 1 mean?

A

Strong acid.

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14
Q

What would pH 7 mean?

A

Neutral.

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15
Q

What would pH 14 mean?

A

Strong alkali.

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16
Q

What is formed when an acid or base is neutralised?

A

Salt.

17
Q

What colour are acids, neutrals and alkalis on the pH scale?

A

-acids: red
-neutral: green
-alkali: purple

18
Q

What is made: metals + acids ->
?

A

Salt + hydrogen

19
Q

What is made: metal oxide + acid -> ?

A

Salt + water

20
Q

What is made: metal hydroxide + acid -> ?

A

Salt + water

21
Q

What is made: metal carbonate + acid -> ?

A

Salt + water + carbon dioxide

22
Q

What is made: ammonia + acid -> ?

A

Salt.

23
Q

What is a pure element?

A

A substance that contains only one type of atom and has a definite melting point.

24
Q

What is a mixture?

A

An impure substance with a varied melting point.

25
Q

What is a formulation?

A

A mixture that has been designed as a useful product. Made by mixing measured quantities to ensure the required properties.

26
Q

What are examples of formulations?

A

-fuels
-medicine
-cleaning agents
-paints
-alloys

27
Q

What is group 7?

A

The halogens.