C1.2.1 - Atomic Structure Flashcards

1
Q

What are different elements made of?

A

Different atoms

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2
Q

Despite its size, do atoms have chemical properties?

A

Yes

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3
Q

How is a molecule made?

A

When 2 or more atoms join together

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4
Q

What are atoms joined by to create molecules?

A

Attractive forces known as chemical bonds

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5
Q

What is an atomic radius?

A

Half the diameter of an atom

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6
Q

How do you calculate the atomic radius of an atom?

A

You either calculate the bond length or diameter and then half it.

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7
Q

What is a bond length?

A

The length between 2 centres of 2 atoms that are bonded together.

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8
Q

What is the typical length of atomic radii and bond lengths?

A

10 to the power of -10m

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9
Q

What are subatomic particles?

A

The 3 smaller particles in an atom

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10
Q

What are the 3 subatomic particles?

A

Protons
Neutrons
Electrons

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11
Q

Where are the protons and neutrons in an atom?

A

Joined together as a nucleus as a centre

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12
Q

Where are the electrons in an atom?

A

Travelling around the outside of the nucleus in waves.

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13
Q

What is the nucleus?

A

A combination of protons and neutrons in the centre of an atom

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14
Q

What is the relative charge of a proton?

A

+1

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15
Q

What is the relative charge of a neutron?

A

0

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16
Q

What is the relative charge of an electron?

A

-1

17
Q

Why do atoms have no overall charge?

A

The charges balance out

18
Q

What is the relative mass of protons?

A

1

19
Q

What is the relative mass of neutrons?

A

1

20
Q

What is the relative mass of an electron?

A

0.0005

21
Q

What is the relative mass of an electron as compared to a proton?

A

1