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Science 10-1 > Chemistry(Scientist) > Flashcards

Chemistry(Scientist) Flashcards

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1
Q

Aristotle

A

4 elements

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2
Q

Jon Dalton (model)

A

Billiard ball

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3
Q

John Dalton (theory)

A

Atoms are solid indestructible spheres (like billiard balls)

Atoms of an element have similar properties

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4
Q

John Dalton (year)

A

1803

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5
Q

JJ Thompson (model)

A

Plum pudding model

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6
Q

JJ Thompson (Theory)

A

Proposed that all atoms are made of a positively charged sphere with negative particles embedded in it

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7
Q

JJ Thompson (year)

A

1904

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8
Q

JJ Thompson (technology)

A

Cathode Ray Tube

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9
Q

Ernest Rutherford (model)

A

Beehive/nuclear model

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10
Q

Ernest Rutherford (theory)

A

Nucleus (positive) with electrons (negative) that move around the nucleus

Atoms are mostly empty space

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11
Q

Ernest Rutherford (year)

A

1911

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12
Q

Ernest Rutherford (technology)

A

Particle emmiter - Gold foil experiment - 1 in 1000 particles were deflected

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13
Q

Niels Bohr (model)

A

Energy levels/ planetary model

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14
Q

Niels Bohr (theory)

A

Electrons surround the nucleas of an atom in specific orbits that have specific energy levels

When electrons fall they release energy

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15
Q

Niels Bohr (year)

A

1913

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16
Q

Niels Bohr (technology)

A

Emission Spectrum

17
Q

Erwin Schrödinger (model)

A

Electron clouds/quantum model

18
Q

Erwin Schrödinger (theory)

A

develops a mathematical equation to describe the motion of electrons in atoms

19
Q

Erwin Schrödinger (year)

A

1926

20
Q

James Chadwick (year)

A

1932

21
Q

James Chadwick (theory)

A

Confirms existence of neutron (have no charge)

Atomic nuclei contain neutrons and positively charged protons

22
Q

Modern day Quantum theory

A

Analogy of a beehive where bees are electrons move around the nucleus in a “cloud” of energy levels

Science 10-1 (5 decks)

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