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GCSE Chemistry > Atomic Structure - 3rd > Flashcards

Atomic Structure - 3rd Flashcards

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1
Q

what is the relative mass of a proton?

A

1

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2
Q

what is the relative mass of a neutron?

A

1

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3
Q

what is the relative mass of an electron?

A

0.0005

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4
Q

what is the relative charge of a proton?

A

+1

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5
Q

what is the relative charge of a neutron?

A

0

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6
Q

what is the relative charge of an electron?

A

-1

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7
Q

where are protons and neutrons found in an atom?

A

in the nucleus in the centre of the atom.

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8
Q

where are the electrons found in an atom?

A

in shells around the nucleus.

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9
Q

draw an atom.

A

atomic structure: picture 1

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10
Q

what is the atomic number?

A

the number of protons.

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11
Q

what is the mass number?

A

the total number of protons and neutrons.

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12
Q

label the atomic number and the mass number.

A

atomic structure: picture 2

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13
Q

how can you find out the number of electrons?

A

since atoms are neutral, the number of electrons = the number of protons.

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14
Q

what are isotopes?

A

isotopes are atoms with the same number of protons but different numbers of neutrons.

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15
Q

what is relative atomic mass?

A

the average mass of an atom of an element, taking into account the different masses of each isotope.

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16
Q

how is relative atomic mass calculated?

A

using the mass numbers of each isotope and their % abundances in nature.
atomic structure: picture 3

17
Q

what does the electronic configuration of an atom show?

A

how the electrons are arranged into energy levels. each energy level has a maximum capacity for holding electrons.

18
Q

what is the maximum capacity of electrons in shells?

A

2,8,8,8

19
Q

what can tell us an atom’s electronic configuration?

A

its location on the periodic table.

20
Q

how is the periodic table organised?

A

row- period - number of occupied electron shells
column - group- number of electrons in the outer shell

GCSE Chemistry (15 decks)

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