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Science NIHS revisions > Atoms; notes and revision > Flashcards

Atoms; notes and revision Flashcards

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1
Q

What are the 3 subatomic particles?

A

Proton, Neutrons, Electrons

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2
Q

What is the charge for Protons?

A

Positive

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3
Q

What is the charge for Neutrons?

A

Neutral

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4
Q

What is the charge for Electrons?

A

Negative

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5
Q

How many electrons can the first shell contain?

A

8

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6
Q

How many electrons can the second shell contain?

A

8

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7
Q

How many electrons can the third shell contain?

A

32

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8
Q

What makes each atom different?

A

They have different amounts of protons

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9
Q

Who were the scientists involved in creating the structure of an atom?

A

Democritus, Dalton, Thomson, Rutherford, Bohr and Chadwick

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10
Q

What did Democritus discover?

A

All matter are made up of small individual matters called atoms

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11
Q

What did Dalton discover?

A

The chemical elements are made of atoms.

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12
Q

What did Thomson discover?

A

The electron and the Plum pudding model

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13
Q

What did Rutherford discover?

A

Alpha and beta rays

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14
Q

What did Bohr discover?

A

Model of the the atom (The Bohr model)

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15
Q

What did Chadwick discover?

A

Neutrons

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16
Q

What is an atom?

A

A particle of matter that defines an element.

17
Q

What is a molecule?

A

A group of two or more atoms combines

18
Q

What is a compound?

A

Substance made of two or more chemical elements combined

19
Q

What is a mixture?

A

A mixture is when two types of pure substances are mixed together

20
Q

How do you work out the atomic mass?

A

Protons + Neutrons

21
Q

Name 3 types of radiation

A

Alpha, Beta, Gamma

22
Q

What is Alpha radiation

A

Helium nuclei

23
Q

What is Beta radiation?

A

High energy electron

24
Q

What is Gamma radiation?

A

High energy EM

25
Q

The distance Alpha radiation travels in

A

Centimeters

26
Q

The distance Beta radiation travels in

A

Meters

27
Q

The distance Gamma radiation travels in

A

Kilometers

Science NIHS revisions (2 decks)

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