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Chemistry Paper 1 > Atomic Structure > Flashcards

Atomic Structure Flashcards

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1
Q

What are all subtances made of?

A

Atoms

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2
Q

What is the smallest part of an element?

A

Atoms

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3
Q

What is a compound?

A

Two or more elements chemically combined

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4
Q

How do we seperate compounds?

A

Chemical reactions

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5
Q

What is a mixture?

A

Two or more elements or compounds not chemically combined

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6
Q

How do we seperate mixtures?

A

Physical seperation techniques (filtration, crystallisation, distillation)

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7
Q

What subatomic particle was discovered first?

A

Electron

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8
Q

What was the plum pudding model?

A

Model of the atom. A ball of positive charge with negative electrons within

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9
Q

What disproved the plum pudding model?

A

Alpha particle scattering experiment

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10
Q

What happened in the alpha particle experiment?

A

Some went through and some were deflected

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11
Q

What did the alpha particle experiment discover?

A

There is a central nucleus with a charge

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12
Q

What replaced the plum pudding model?

A

Nuclear model

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13
Q

What did Niels Bohr do?

A

Suggested electrons orbit the nucleus in shells at specific distances

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14
Q

What did James Chadwick discover?

A

Neutron

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15
Q

What is the order of discovery of subatomic particles?

A

Electron, Proton, Neutron

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16
Q

What is the charge of a proton?

A

+1

17
Q

What is the charge of a neutron?

A

0

18
Q

What is the charge of an electron?

A

-1

19
Q

What is the overall charge of an atom?

A

0

20
Q

In an atom’s nucleus, the number of protons is equal to the number of what?

A

Electrons

21
Q

An element’s atomic number is the same as the amount of what in its atoms?

A

Protons

22
Q

What is the relative mass of a proton?

A

1

23
Q

What is the relative mass of a neutron?

A

1

24
Q

What is the relative mass of an electron?

A

Very small

25
Q

Where is most of an atom’s mass?

A

Nucleus

26
Q

What is the radius of an atom?

A

0.1 nm

27
Q

The sum of the protons and neutrons in an atom is its what?

A

Mass number

28
Q

Is the mass number on top or bottom?

A

Top

29
Q

Is the atomic number on top or bottom?

A

Bottom

30
Q

What is an isotope of an element?

A

Atoms of the same element with different numbers of neutrons

31
Q

What is an element’s relative atomic mass?

A

Average value that takes into account the abundance of the element’s isotopes

Chemistry Paper 1 (6 decks)

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