Atomic Structure Flashcards

1
Q

What are the three subatomic particles found in atoms?

A

Protons +
electrons -
neutrons/ no charge

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2
Q

what subatomic particles are found in the nucleus?

A

protons

neutrons

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3
Q

where are electrons found in atoms?

A

in the outer shell of the nucleus

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4
Q

What keeps electrons from flying off?

A

Electromagnetic force

stronger attraction to the protons ( the positive charge of the proton binds the electron from flying off)
- opposites attract

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5
Q

atoms of an element are defined by the number of?

A

protons

the identity of an element is determined by the number of protons

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6
Q

what is the atomic number

A

the number of protons in the nucleus of an atom

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7
Q

what is the mass total

A

the total number of protons ad neutrons in a nucleus

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8
Q

how many electrons does a neutral atom have

A

8 electrons

the same number of protons and electrons

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9
Q

Isotopes are atoms with a different number of…

A

neutrons

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10
Q

electrons in orbitals close to the nucleus are…

A

core

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11
Q

electrons in orbitals farthest from the nucleus are…

A

valence

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