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Honors Chemisty > Test 1! > Flashcards

Test 1! Flashcards

1
Q

What contributions did Thales make?

A

water

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2
Q

What contributions did Anaximander make?

A

earth

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3
Q

What contributions did Anaximenes make?

A

air

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4
Q

What contributions did Heraclitus make?

A

fire

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5
Q

What contributions did Empedocles make?

A

material pluralism

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6
Q

What contributions did Leucippus and Democritus make?

A

introduced and spread atomism

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7
Q

What contributions did Antoine Lavoisier make?

A

law of conservation of matter

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8
Q

What contributions did Joseph Louis Proust make?

A

law of definite proportions

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9
Q

John Dalton

A

law of multiple proportions

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10
Q

JJ Thomson

A

discovered electron

- atom = circle with electrons and protons floating around

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11
Q

Ernest Rutherford

A

discovered proton

positive charge = concentrated in nucleus with electrons floating around

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12
Q

Neils Bohr

A

electrons travel in orbit

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13
Q

Louis De Brogile

A

matter has wave characteristics

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14
Q

Erwin Schrodinger

A

proposed new model based on Brogile’s findings

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15
Q

John Dalton atom, Leucippus/ Democritus

A

sphere

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16
Q

JJ Thomson atom

A

sphere with subatomic particles floating around

17
Q

Neils Bohr atom

A

orbits

18
Q

Erwin Schrodinger

A

nucleus with electron cloud

19
Q

nucleus

A

center of atom
holds protons and neutrons
positive charge

20
Q

electron cloud

A

empty space with electrons floating around

negatively charged

21
Q

proton properties

A

positive charge
relative mass: 1837
location: nucleus

22
Q

neutron properties

A

no charge
relative mass: 1839
location: nucleus

23
Q

electron properties

A

negative charge
relative mass: 1
location: electron cloud

24
Q

atomic number

A

number of protons and therefore also electrons

25
Q

mass number

A

number of nucleons (protons and neutrons)

26
Q

nucleon

A

protons and atoms in nucleus

27
Q

isotope

A

same number of protons and electrons but different number of neutrons

28
Q

isobar

A

same atomic mass but different atomic number

29
Q

isotopic mass

A

mass relative to carbon-12

30
Q

Percent abundance

A

percent of atoms in a natural sample that are the isotope of a certain element

31
Q

relative atomic mass

A

mass taking into account proportion of each isotope

Honors Chemisty (13 decks)

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