Isotopes Quick Check

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

What happens by changing the number of neutrons?

• The atomic mass changes

• The number of electrons changes

• The atomic number changes

• The number of protons changes

which atom has  4 neutrons?

• Li-6
• Li-7
• Li-8
• they have the same # of neutrons

What is an isotope? 

• A charged atom
• An atom with different amounts of neutrons
• An atom with different amounts of protons
• A neutral atom

How many neutrons does a Sodium 24 isotope have?

• 12
• 13
• 14
• 15

What is the name of the pictured isotope?

• Carbon-12
• Carbon-13
• Carbon-14
• Carbon-15

Carbon has an atomic number of 6 and an atomic mass of 12. Which elements are considered isotopes of carbon?

• Carbon-12
• Carbon-13
• Carbon-14
• Both Carbon-13 and Carbon-14

If a proton is added or removed from an atom, what happens?

• It becomes a different element.

• It becomes a different isotope.

• Nothing happens.

What is the difference between Neon-20 and Neon-22?

• They have different numbers of electrons.

• They have different numbers of neutrons.

• Only 1 is radioactive.

• No difference.

Which is the correct symbol for Fluorine-18?

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