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PHYSICAL SCIENCE > M3 > Flashcards

M3 Flashcards

1
Q

subatomic particles

A

protons
electrons
neutrons

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2
Q

Greek Philosophers hypothesized about the composition of
matter

A

early days of the atomic theory

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3
Q

when does early days of the atomic theory happened

A

5th century BC

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4
Q

who says “Everything is made up of small
indivisible particles known as ‘atomos’.”

A

Democritus

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5
Q

accordin to Democritus: Everything is made up of small indivisible particles known as

A

atomos

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6
Q

teacher of democritus

A

Leucippus

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7
Q

Pioneer of the ideas of composition and change in matter

A

Leucippus

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8
Q

Matter is composed of atomos and void

A

atomism

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9
Q

in atomism, Matter is composed of

A

atomos and void

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10
Q

The atomos may combine to form clusters in the void

A

atomism

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11
Q

Change can happen when some atoms collide with each other in the void.

A

atomism

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12
Q

e thought the the idea of
the atom goes against ex nihilo and it limits the power of the gods

A

aristotle

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13
Q

who says matter is based from nature elements

A

aristotle

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14
Q

what are the nature elements says by aristotle

A
  • fire
  • earth
  • water
  • air
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15
Q

expressed the
existence of the aether

A

aristotle

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16
Q

The idea of the atom was given importance during the

A

renaissance

17
Q

formulated his Atomic Theory based on the
atomos.

A

john dalton

18
Q

the first to suggest the
concept of the atom.

A

Ancient Greek philosophers

19
Q

the first Greek scholars
who believed in atomism and pioneered the study of the composition of and changes in matter

A

democritus and leucippus

20
Q

According to atomism, nature is composed of two basic principles

A

atom and void

21
Q

The idea of atomism was set aside because of the ideas of prominent natural philosophers like

A

plato about nature elements

22
Q

characteristics of The Atomos of Democritus

A

● solid
● indestructible
● collides with each other
● can form clusters

23
Q

Modification of Democritus’ Atomic Model

A

● There are smaller subatomic particles.
● Two types of the smaller particles are charged.
● Two types of the smaller particles are found at the center.
● The particles are very small and the atom is mostly space.

24
Q

positively charged and found at the nucleus.
Discovered by Ernest Rutherford

A

proton

25
Q

proton discovered by

A

Ernest Rutherford.

26
Q

neutral and found at the nucleus. Discovered by
James Chadwick.

A

neutrons

27
Q

neutrons discovered by

A

James Chadwick.

28
Q

negatively charged and move around the
nucleus. Discovered by JJ Thomson.

A

electrons

29
Q

electrons are discovered by

A

JJ Thomson.

30
Q

characteristics of Dalton’s Solid Sphere Model

A

● The atom is indestructible.
● The atom is a solid particle.
● Atoms of the same element have the same properties.
● The atom can combine to form compounds.

31
Q

characteristics of Thomson’s Plum Pudding Model

A

● The atom is divisible into charged particles.
● The atom is made of a massive mass with a positive
charge.
● Electrons are negatively charged particles that are
embedded on the body of the atom.

32
Q

characteristics of Rutherford’s Nuclear Model

A

● The atom is composed of positive and negatively charged
particles.
● The nucleus is at the center of the atom and this is where
the mass of the atom is concentrated.
● Protons are the positively charged particles and are found
at the nucleus.
● Electrons are the smaller negatively charged particles and
they move around the nucleus.
● The atom is made up of mostly space.

33
Q

The development of the atomic structure started with the
idea presented by Democritus that all matter is made up
of small indivisible particles called atomos. This idea is
widely known in ancient Greece as

A

atomism

34
Q

more precise description of the atom was presented by John Dalton later on. In his

A

solid sphere model,

35
Q

THE ATOMIC MODELS

A

● Dalton’s Solid Sphere Model
● Thomson’s Plum Pudding Model
● Rutherford’s Nuclear Model

PHYSICAL SCIENCE (9 decks)

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