2.5 Isotopes Flashcards

1
Q

What element did Dalton select as his standard?

A

Hydrogen

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2
Q

Mass vs Weight

A

– quantity of matter, constant
– pull of gravity, varies

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3
Q

What standard is the atomic mass for each element on the Periodic Table based on?

A

carbon-12

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4
Q

Isotopes of an element display __ neutron numbers and mass numbers

A

different

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5
Q

Varying the neutron count produces a different __ of the element

A

isotope

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6
Q

How do you find the mass #?

A

protons + neutrons

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7
Q

In nuclear notation, what is never substituted in place of something else?

A

Atomic mass is never substituted in place of mass #

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8
Q

Define Atomic Mass

A

avg weight mass of an element’s isotopes

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