Chapter 3- Structure Of The Atom Flashcards by Elsie Rushworth | Brainscape

Q

Atom is…

A

Smallest unit of matter

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Q

In the nucleus there are…

A

Protons and neutrons

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Q

Outside the nucleus there are…

A

Electrons

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Q

Relative charge of an electron

A

-1

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Q

Relatuve charge of a neutron

A

0

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Q

Relative charge of a proton…

A

+1

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Q

Relative mass of an electron

A

1/1836

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Q

Relative mass of a neutron

A

1

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Q

Relative mass of a proton

A

1

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Q

Ernest Rutherford discovered…

A

Discovered that atoms have a nucleus

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Q

JJ Thompson discovered…

A

The electron

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Q

Chadwick discovered…

A

He discovered neutrons which have no charge which were also in the nucleus

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Q

How do you find the number of protons?

A

Atomic number

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Q

How do you find the number of electrons?

A

Atomic number

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Q

How do you find the number of neutrons…

A

Relative atomic mass-atomic number

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