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Science > Atoms > Flashcards

Atoms Flashcards

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1
Q

Is a study of matter

A

Chemistry

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2
Q

Anything that occupies space and had mass

A

Matter

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3
Q

Come from the greek word atomos which means indivisible

A

Atom

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4
Q

Basic unit of matter

A

Atoms

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5
Q

British School Teacher

A

John Dalton

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6
Q

According to him elements consist of tiny particles called atom

A

John Dalton

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7
Q

Billiard ball model

A

John Dalton

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8
Q

He’s theory became the one of the foundation of chemistry

A

John Dalton

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9
Q

Atoms that make up the element are identical

A

John Dalton

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10
Q

Cathode Ray Tube Experiment

A

Joseph John Thomson

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11
Q

Beam of negative particles

A

Joseph John Thomson

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12
Q

He discovered electrons

A

Joseph John Thomson

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13
Q

Negative particles within the atom

A

Joseph John Thomson/ Electrons

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14
Q

Plum pudding model

A

Joseph John Thomson

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15
Q

Positive sphere (pudding with negative electrons (plums) dispersed throughout

A

Plum pudding model/Joseph John Thomson

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16
Q

Gold foil experiment

A

Ernest Rutherford

17
Q

Discovered the nucleus

A

Ernest Rutherford

18
Q

Dense, positive charge in the center of the atom

A

Nucleus/Ernest Rutherford

19
Q

The place where proton and neutron are present

A

Nucleus

20
Q

Nuclear Model

A

Ernest Rutherford

21
Q

dense, positive nucleus surrounded by negative electrons

A

Nuclear Model / Ernest Rutherford

22
Q

Bright Line spectrum

A

Niels Bohr

23
Q

Tried to explain the presence of specific colors in hydrogens spectrum

A

Niels Bohr

24
Q

Energy Levels

A

Niels Bohr

25
Q

Fixed distance from the nucleus of an atom where electrons may be found

A

Energy Levels/ Niels Bohr

26
Q

Electrons have fixed amount of energy

A

Niels Bohr

27
Q

Planetary Model

A

Niels Bohr

28
Q

Electrons move in circular orbits within specific energy Levels

A

Planetary Model/Niels Bohr

29
Q

Electrons are found in definite or exact orbits around the nucleus of an atom

A

Planetary Model /Niels Bohr

30
Q

he proposed the uncertainty principle which states that we can conclude the possible location of electrons outside the nucleus but not exact location

A

Werner Karl Heisenberg

31
Q

he explained that electrons could be taught to behave like a wave electrons whirl about the nucleus billions of times in one second

A

Louie de Broglie

32
Q

Electron Cloud Model (Quantum Mechanical Model )

A

Erwin Schrodinger

33
Q

Energy of the electrons

A

Niels Bohr

34
Q

region of space or orbit around the nucleus as consisting of shells

A

Erwin Schrodinger

35
Q

it describe the average distance of the orbital from the nucleus and the energy of the electron in an atom

A

Quantum Number

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