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AQA GCSE Science > deck_15392094 > Flashcards

deck_15392094 Flashcards

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1
Q

As you go down group 0 what happens to boiling and melting point of elements and why?

A

Increase due to the Ram also increasing.

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2
Q

What is the name of Group 1 metals?

A

Alkali metals

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3
Q

As we go down the group 1 what happens to the reactivity and why?

A

Reactivity increases as Radius increases so the outer electrons are futher from nucleus so less attracctiong.Adding on there is electron shielding.This leads to electron being more easily lost.

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4
Q

How does group 7 elements exist?

A

Diatomic elements.

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5
Q

What happens to the melting point,Boiling point and the Ram as we go down group 7.

A

All increase.

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6
Q

Whan Halogens (Group 7 )Become an ion what is there ending?

A

-ide

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7
Q

What happens to reactivity in Group 7 as you go down.

A

Decrease.Halogen need to gain electron.Radius increases so the outer electron are futher from nuclues so there is less attraction of a elextron+Electron shielding.

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8
Q

What were the 2 things that the alpha particle method unveailed about the atom.

A

1.Mass of atom concentrated in centre,Nuclues.
2.Nuclues was charged

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9
Q

What is a plum pudding model?

A

An atom is a ball of
positive charge with negative electrons embedded in it.

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10
Q

Which scientist came up with outer elecron shells.

A

Niels Bohr

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11
Q

Who discovered neutrons.

A

James Chadwick

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12
Q

What happens to boiling point and melting point dow group 0?

A

Increases

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13
Q

Isotopes have…

A

Same number of Proton different number of neutrons

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14
Q

How to find RAM of isotopes with abudnance?

A

(massxabundance)+(massxabundance)/100

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15
Q

What is the formula for concentration?

A

mass/volume or moles over volume

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16
Q

What happens an the anode?

A

Pulls in electrons.

17
Q

What is the process of anode called?

A

Oxidisation

18
Q

What happens cathode?

A

Gives electrons out?

19
Q

In the universal indecator what would deep red suggest?

A

An acid

20
Q

In the universal indecator what would blue/purple represent?

A

An alkali

21
Q

What is a neutralisation reaction?

A

A reaction between acid and a base.

22
Q

What does a neutralisation reaction form?

A

Salt + Water

23
Q

What ions are in acid?

A

H+

24
Q

What ions are in alkali?

A

OH-

25
Q

For aqeous solution what is the rule for the anode?

A

Oxygen will be produced unless their is a halide(7()ion

26
Q

For aqeous solution what is the rule for the Cathode?

A

Hydrogen will be produced if metal is more reactive.

27
Q

How do we go from cm^3 to dm^3

A

/1000

28
Q

What happens when a metal carbonate reacts with a less reactive acid(HCL) ?

A

Forms a salt +water +co2

29
Q

What does a strong acid do?

A

A strong acid is and acid that dissociates or ionizes completely when in solution.

30
Q

What does a weak A strong acid is and acid that dissociates or ionizes completely when in solution.acid do?

A

A weak acid is and acid that partially dissociates or ionizes completely when in solution.

31
Q

What is the avragado constant

A

6.022 × 1023 atoms per mole

AQA GCSE Science (5 decks)

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