Half term -1 Flashcards

1
Q

What are 3 conclusions drawn from the alpha scattering experiments?

A
  1. Most of the atom was empty space.
    2.There is a concentrated area of positive charge in the atom.
    3.Atoms contain a very small, heavy mass.
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2
Q

Who discovered the electron?

A

J. J Thompson

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3
Q

Who discovered the proton?

A

Ernest Rutherford

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4
Q

Who discovered the neutron?

A

James Chadwick

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5
Q

When was the proton discovered?

A

1917

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6
Q

When was the electron discovered?

A

1897

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7
Q

When was the neutron discovered?

A

1932

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8
Q

Where does the word ‘atom’ come from?

A

The Greek word ‘atomos’ meaning indivisible

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9
Q

What is the relative mass of a proton?

A

1

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10
Q

What is the relative mass of a neutron?

A

1

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11
Q

What is the relative mass of an electron?

A

0 (negligible)

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12
Q

What is the relative charge of a proton?

A

+1

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13
Q

What is the relative charge of a neutron?

A

No charge

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14
Q

What is the relative charge of an electron?

A

-1

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15
Q

How do you calculate the amount of protons in an atom?

A

the atomic number

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16
Q

How do you calculate the amount of neutrons in an atom?

A

Mass number-atomic number

17
Q

How do you calculate the number of electrons in an atom?

A

The atomic number

18
Q

What are isotopes?

A

atoms with the same number of protons but a different number of neutrons
They have the same atomic number but a different mass number

19
Q

What subatomic particle determines which type of atom an atom is?

A

protons (all atoms with 6 protons are carbon atoms)

20
Q

What are group 1 elements called?

A

alkali metals

21
Q

What are group 7 elements called?

22
Q

What are group 0 elements called?

A

Noble gases

23
Q

What are group 2 elements called?

A

alkali earth metals

24
Q

What are the 3 types of bonding?

A

Covalent
Ionic
Metallic

25
Covalent bonding is where...
atoms share electrons so they have full outer shells
26
Does covalent bonding happen between metals or non-metals?
Non metals
27
ionic bonding is where...
electrons are transferred between atoms so that they have a full outer shell
28
Does ionic bonding happen between metals or non-metals
between a metal and a non-metal
29
Does metallic bonding happen between metals or non-metals
metals
30
How does the boiling point of noble gases change as you move down the group?
it increases
31
What is the trend in melting point as you move down the alkali metals?
the melting point decreases
32
As you move down the alkali metals what is the trend in reactivity?
They get more reactive as you move down the group
33
What is the trend in melting point as you move down the halogens?
the melting point increases as you move down the group
34
What is the trend in reactivity as you move down the halogens/
The reactivity decreases
35