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Chemistry AS Level Unit 1 > Basic Ideas About Atoms > Flashcards

Basic Ideas About Atoms Flashcards

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1
Q

Atomic number

A

Number of protons (number of protons is same as number of electrons)

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2
Q

Mass of atom

A

Number of protons + number of neutrons

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3
Q

Isotopes

A

Different number of neutrons

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4
Q

Charge of an alpha particle

A

+2

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5
Q

Alpha decay effect on atomic number and mass number

A

Atomic number -2

Mass number -4

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6
Q

What are beta particles?

A

High energy electrons emitted by nucleus

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7
Q

What are alpha particles?

A

Helium nucleus

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8
Q

Beta particle charge

A

-1

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9
Q

Affect on proton number (atomic number) of atom undergoing beta decay

A

+1

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10
Q

Beta decay affect on neutrons

A

-1

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11
Q

How would beta decay affect mass?

A

No effect

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12
Q

Beta particle has a mass of 0

A

Electrons have a negligible mass

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13
Q

Positron emission result of

A

1 proton changing into a neutron emits a positron

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14
Q

Positron emission affect on number of protons (atomic number)

A

-1

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15
Q

Positron emission affect on number of neutrons

A

+1

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16
Q

Positron emission affect on mass

A

No change

17
Q

Half life definition

A

Time taken for half a radioactive sample to decay

18
Q

Frequency is ____ to wavelength

A

Inversely proportional

19
Q

Frequency is ___ to energy

A

Directly proportional

20
Q

Equation linking energy to frequency

A

E=hf

21
Q

Equation linking frequency to wavelength

A

F=v/wavelength

22
Q

Significance of convergence limit (last line on right of bar) of layman series

A

Gives first ionisation energy

23
Q

Lyman series for what light?

A

UV

24
Q

Balmer series for what light?

A

Visible

25
Q

Lines of Balmer series fall to which energy level?

A

N=2

26
Q

Lines of Lyman series fall to which energy level?

A

N=1

Chemistry AS Level Unit 1 (5 decks)

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