The Atom Review Flashcards

1
Q

Dalton’s Atomic Theory

A

Same element = identical
Different element = different
Atoms are not created nor destroyed
Combined atoms = compounds
Atoms can be combined, rearranged, and separated

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2
Q

Rutherford’s Experiment

A

In his gold foil experiment, he found that tiny particles were bouncing off of the gold foil. He also found that most of the atom was empty space since electrons and protons were extremely small.

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3
Q

Atom

A

basic unit of matter

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4
Q

Isotope Name

A

Name of element and mass

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5
Q

Nuclear Notation

A

element abbreviation, mass number ^^^, atomic number vvv

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6
Q

Average Atomic Mass

A

average mass given relative abundance of an element

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7
Q

Alpha Decay

A

Helium, -4 mass, -2 protons

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8
Q

Beta Decay

A

electron, +1 proton, same mass

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9
Q

Positron Emission

A

Positron, -1 proton, same mass

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10
Q

Electron Capture

A

adds electron, -1 proton, same mass

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11
Q

Half-life

A

amount of time for 1/2 of radioactive isotope to decay

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12
Q

Fission vs. Fusion

A

fission = nucleus splits with energy released
fusion = nuclei combines with energy released

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