Atomic Theory People Flashcards

1
Q

What did democritus do

A

He developed the concept of the atom as an indivisible unit of matter - greek, old

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2
Q

What did Lavoisier do

A

Law of conservation of mass -

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3
Q

What did Davy do

A

That electrons exist in matter and can be exchanged

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4
Q

What did Dalton do

A

He introduced atomic theory into modern chemistry

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5
Q

What did JJ Thompson do

A

He discovered that matter had electrons and introduce the plum pudding model

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6
Q

What did Rutherford do

A

He discovered the proton and that it is in the nucleus

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7
Q

What did Einstein do

A

The photoelectric effect and that when electrons jump there is light released

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8
Q

What did Bohr do

A

Quantization of electron energies around an atom

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9
Q

Who thought matter was composed of indivisible units called atoms

A

Democritus

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10
Q

Who figured out that electrons have quantized energies

A

Bohr

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11
Q

Who discovered the proton and the concept that it was located in a small nucleus

A

Rutherford

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12
Q

Who postulated that matter was made up of indivisible units that were different in their mass and reactivity

A

Dalton

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13
Q

Who discovered that there are negative particles in matter and what these particles called

A

JJ Thompson

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14
Q

Who figured out matter cannot be created or destroyed in a chemical reaction (conservation of mass)

A

Lavoisier

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15
Q

Who discovered that electrons can be exchanged in a chemical reaction

A

Davy

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16
Q

Who figured out that you could put light on an atom and get out electrons (photoelectric effect)

A

Einstein