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Chemistry > T1 YR10 - Atomic Structure > Flashcards

T1 YR10 - Atomic Structure Flashcards

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1
Q

What is an atom?

A

Substance made up of little particles

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2
Q

What is an element?

A

Substance made up of only one atom

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3
Q

What is a compound?

A

Substance made up of 2 or more types of atoms chemically bonded together

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4
Q

What is the law of conservation of mass?

A

Total mass of products formed in a reaction is = to total mass of reactants (Energy cannot be created nor destroyed)

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5
Q

What is aqueous?

A

Substance dissolved in water

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6
Q

Is there any chemical bonds between substances in a mixture?

A

No

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7
Q

What is filtration used for?

A

Used to seperate substances that are insoluble in a particular solvent

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8
Q

What are the 3 types of separating mixtures?

A

Filtration, crystallisation, distillation

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9
Q

What is the 2 advanced methods?

A

Fractional distillation, paper chromatography

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10
Q

In fractional distillation, what does miscible mean?

A

Liquids that dissolve into each other, mixing completely

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11
Q

What is paper chromatography used for?

A

Used to seperate substances from mixtures in a solution

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12
Q

What did John Dalton discover?

A

Believed atoms couldn’t be divided and were just tiny hard here’s with different masses

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13
Q

What did JJ Thomson discover?

A

PLUM PUDDING MODEL - Discovered the electron

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14
Q

What did Ernest Rutherford do?

A

Golf foil experiment and discovered the nucleus that contains very dense protons

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15
Q

What did Niels Bohr discover?

A

Suggested electrons must be orbiting nucleus at different distances (shells, energy levels)

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16
Q

What did James Chadwick discover?

A

Neutrons, the missing mass from the nucleus

17
Q

What is the relative mass of an electron?

A

1
——
2000

18
Q

Where on an element in periodic table is the atomic number?

A

Proton number, on the bottom

19
Q

Where on an element in periodic table is the mass number?

A

Nucleon number, number of protons and neutrons, on the top

20
Q

What is an ion?

A

A charged atom

21
Q

What is an isotope?

A

An atoms with the same number of protons but different number of neutrons

22
Q

What is an energy level?

A

The shell where electrons obit the nucleus at different distances (energy levels)

23
Q

What group are the noble gases?

A

Group 0

24
Q

What is the exception in group 0

A

All elements have 8 electrons on outer shell apart from HELIUM WHICH HAS 2

Chemistry (8 decks)

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