Atomic Structure And The Periodic Table Flashcards

1
Q

What is the nucleus of an atom

A
It is in the middle of the atom 
It contains protons and neutrons 
It has a positive charge 
It is almost the whole mass of the atom 
But only a tiny part of the atom
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2
Q

What are electrons

A
They move around the nucleus 
They are in shells 
They have a negative charge
They are tiny and have very little mass but move over a big area 
Their relative mass is 1/2000
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3
Q

What are protons

A

They’re positive
They are in the nucleus
They have a mass of 1

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4
Q

What are neutrons

A

They are neutral
They are In the nucleus
They have a mass of 1

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5
Q

How do you work out the number if protons and electrons

A

They are the same as the atomic number

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6
Q

How do you find the number of neutrons

A

The mass number - the atomic number

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7
Q

How many electrons can be in each shell

A

2
8
8

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8
Q

What are isotopes

A

Different atomic forms of the same element

They have the same number of protons but a different number of neutrons

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9
Q

How do you work out the relative atomic mass of an element

A

(Ram of Isotope X amount) + (ram of Isotope X amount)/

Sum of relative abundance

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10
Q

Why was the periodic table so helpful

A

It could predict what undiscovered elements would be like

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11
Q

What are the groups called and their charges

A
Alkali metals +1
Group 2 +2
Group 3 +3
Group 4 
Group 5 -3
Group 6 -2
Halogens -1
Noble gases 0
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