Structure Of The Atom (Vocab) Flashcards

1
Q

Definition of the atom

A

Smallest particle of an element that still has the element’s properties

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2
Q

Define the Electron Cloud

A

Area surrounding the nucleus of an atom where electrons are likely yo be

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3
Q

Define the nucleus

A

Center of the element (control center)

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4
Q

Define a proton

A

Positive charge in an atom (+)

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5
Q

Define electrons

A

Subatomic particles with a negative charge

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6
Q

Define neutrons

A

Negative charge in the atom (-)

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7
Q

Define John Dalton

A

All matter consists of invisible particles called atoms that cannot be created or destroyed

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8
Q

Define JJ Thompson

A

1897, JJ Thompson discovered the first subatomic particle while researching Cathode Rays
(Plum Pudding Model)

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9
Q

Define Ernest Rutherford

A

Discovered the nuclear us of the atom in 1910

Alpha beam/Gold Foil

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10
Q

Define Neils Bohr

A

Electrons move around the nuclear us only at fixed distance is based on the amount of energy they have

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11
Q

Define Mass Number

A

The total number of protons and neutrons in a nucleus

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12
Q

Define Atomic Mass

A

The number of protons in the nucleus of an atom , determines chemical properties of elements, and the place on the periodic table

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