make up of an atom Flashcards

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1
Q

What does the atomic number show

A

The number of protons

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2
Q

What type of charge does a proton have

A

A positive charge

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3
Q

Do neutrons have a charge

A

No

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4
Q

What 2 things are in the centre of an atom

A

Protons and neutrons

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5
Q

What is the centre of an atom called

A

The nucleus

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6
Q

What type of charge do electrons have

A

Negative

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7
Q

What do you do to find the number of neutrons

A

Neutrons= Mass number-Atomic number

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8
Q

How many electrons can fit on the 1st shell

A

2

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9
Q

How many electrons can fit on the 2nd shell

A

8

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10
Q

How many electrons can fit on the 3rd shell

A

18

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11
Q

How do you find the mass of an atom

A

By rounding the atomic weight

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