Ions and Isotopes Review

How do you find the mass number?

• Protons+Electrons

• Protons+Neutrons

• Protons+Neutrons+Electrons

• Calculate it using the percent abundance for each isotope

How does Carbon-12 and Carbon-14 differ?

• # of protons

• Mass #

• # of neutrons

• Mass # and # of neutrons

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NGSS.HS-PS1-8

Carbon-12 and Carbon-14 are

• Ions

• Isotopes

• Cations

• Anions

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NGSS.HS-PS1-8

Which is true of a cation (select all that apply)?

• A positively charged ion

• Formed by gaining protons

• Formed by losing electrons

• Formed by gaining electrons

If aluminum loses 3 electrons, what will the charge be?

• +

• -

• +3

• -3

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An atom with 3 protons, 2 electrons, and 4 neutrons will be:

• Lithium-7 with a -1 charge

• Lithium-5 with no charge

• Lithium-5 with a +1 charge

• Lithium-7 with a +1 charge

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NGSS.MS-PS1-1

How many neutrons does Thorium-182 have?

• 92

• 90

• 182

• 129

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NGSS.HS-PS1-8

Which is true of an anion (select all that apply)?

• It is an ion with a positive charge

• It has lost electrons

• It has gained electrons

• It has lost protons

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NGSS.HS-PS1-7

An ion is:

• An atom that has gained or lost electrons

• An atom that has gained or lost neutrons

• An atom that has gained or lost protons

• An atom that is neutrally charged

Tags

NGSS.HS-PS1-1

An isotope is:

• An atom that has gained or lost electrons

• An atom that has gained or lost neutrons

• An atom that has gained or lost protons

• An atom that is neutrally charged

Tags

NGSS.HS-PS1-8