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ADV.CHEMISTRY > UNIT 2 > Flashcards

UNIT 2 Flashcards

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1
Q

Who bombarded gold foil with alpha particles?

A

Ernest Rutherford

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2
Q

Who devised the first atomic theory?

A

John Dalton

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3
Q

Who developed the planetary model of the atom?

A

Ernest Rutherford

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4
Q

Who discovered the first subatomic particle?

A

JJ Thomson

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5
Q

Who based his model on “electron clouds”?

A

Erwin Schrodinger

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6
Q

Who first coined the term “atom”?

A

Democritus

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7
Q

Who discovered the nucleus?

A

Ernest Rutherford

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8
Q

Who devised the plum pudding model?

A

JJ Thomson

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9
Q

Who was the first to suggest electrons had a fixed energy?

A

Niels Bohr

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10
Q

Who said that all atoms of an element are identical in size, mass and other properties?

A

John Dalton

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11
Q

Who determined that the mass of an atom was concentrated in the center?

A

Ernest Rutherford

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12
Q

Who showed cathode rays are composed of negative particles?

A

JJ Thomson

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13
Q

Who had the FIRST idea of a basic indivisible particle?

A

Democritus

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14
Q

Who concluded that all elements contain electrons?

A

JJ Thomson

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15
Q

Who conducted an experiment using Cathode Ray Tubes?

A

JJ Thomson

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16
Q

Who conducted an experiment using Gold Foil?

A

Ernest Rutherford

17
Q

The number of an element is the total number of which particles in the nucleus?

A

Protons

18
Q

All atoms of the same element have the same ______.

A

number of protons

19
Q

Isotopes of the same element have different ______.

A

numbers of neutrons and mass numbers

20
Q

an atom that has gained or lost electrons and carries a net electrical charge is called an ______.

A

ion

ADV.CHEMISTRY (3 decks)

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