How the concept of the atom evolved from Ancient Greek to the present Flashcards

1
Q
  • About 2,500 years ago, early Greek
    philosophers believed the entire
    universe was a
  • In other words, “everything was one”
A

single, huge entity

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2
Q

They believed that all objects, all
matter, and all substances were
connected as a _ “thing”

A

single, unchangeable

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3
Q

proponents of The Indivisible Atom

A
  1. Democritus
  2. Leucippus
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4
Q

Greek scholars who believed that matter could be divided into tiny particles until such point whereit can no longer be divided anymore.

A
  1. Democritus
  2. Leucippus
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5
Q

atoms, which
come from the Greek word

A

ATOMOS

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6
Q

atomos means

A

uncuttable

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7
Q

proponents of Arguments Against Atomism

A
  1. Anaxagoras
  2. Empedocles
  3. Anaximenes
  4. Heraclitus
  5. Aristotle
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8
Q

He propounded a physical theory of
“everything-in-everything,” and claimed that everything in the universe is composed of small, divisible particles

A

Anaxagoras

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9
Q

this is called _ (which translates to “mind” or “intellect” in Greek)

A

nous

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9
Q

He proposed that all universe was composed of matter in the four
fundamental elements: earth, water, air,
and fire. He believed that these elements combined and separated through the actions of two opposing forces he called “love” (philia) and “strife” (neikos)

A

Empedocles

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10
Q

philia is

A

love

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11
Q

neikos is

A

strife

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12
Q

He believed that air (a boundless, infinite substance that can be altered and transformed into various forms) is the fundamental substance from which all things in the universe originate and to which they ultimately return

A

Anaximenes

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13
Q

He believed that the primeval substance is fire and change is the only reality. He argued that permanence was an illusion and everything is in a state of constant flux

A

Heraclitus

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14
Q

He believed that everything in the
universe is made up of the four elements: air, fire, water, and earth. He stated that believing in atoms would mean putting restriction on the gods, who have the power to divide elements smaller than the atom.

A

Aristotle

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15
Q

air, fire,
water, and earth, are the primordial
substances. He called them _

16
Q

A set of five geometric shapes of solids
that are characterized by having equal
faces, equal angles, and equal edge
lengths

A

Platonic Solids

17
Q

The word element came from the Greek word “στοιχεῖον” (stoicheion) which means smallest division. It was first used by _

18
Q

Air was

A

wet and hot

19
Q

Fire was

A

hot and dry

20
Q

Water was

A

wet and cold

21
Q

Earth was

A

dry and cold

22
Q

Aether was

A

neither hot
nor cold and was neither
wet nor dry

23
Q

It was a speculative science with goals of finding the elixir of life and the
philosopher’s stone, which could
transform base metals into gold

24
Isolation of metallic zinc, invention of steel, and use of flame to identify metals
Indian Alchemists
25
Creation of gold, invention of gunpowder, creation of poisons such as mercuric sulfide
Chinese Alchemists
26
Jabir Ibn Hayyan, was the first to mention silver nitrate and red oxide of mercury in his works. His writings also described laboratory techniques
Islamic Alchemists
27
Manufacturing of imitation gold and silver. Making dyes and artificial gemstones. Fabricating pearls
Egyptian Alchemy
28
Paracelsus: believed that the organs of the body worked alchemically. He proposed that the three essentials (tria prima) salt, mercury, and sulfur, should be balanced to maintain health. He also created laudanum, an opium tincture used as a painkiller
European Alchemy
29
It was the first atomic model and was developed by John Dalton in 1808 after experimenting with mixture of gases
Solid Sphere Model
30
- An atom that could not be divided into smaller particles - All atoms of one element are identical to each other but different from the atoms of another element
Solid Sphere Model
31
It was developed by Joseph John Thomson in 1897 through cathode rays experiment
Plum Pudding Model
32
Suggested that atoms were composed of a positively charged matrix with embedded electrons.
Plum Pudding Model
33
Thomson discovered the _ (corpuscle) in 1904.
electron
34
It was developed by Ernest Rutherford in 1911 through foil and alpha particles experiment
Nuclear Model
35
Suggested that atoms had a dense, positively nucleus at their small, charged center
Nuclear Model
36
Rutherford discovered the _ in 1919
proton
37
* It was developed by Niels Bohr in 1913. *Electrons orbited the nucleus at different distances and had different energies
Planetary Model