Physical Science 3.4

Multiple Choice

If an atom has 6 protons, 6 electrons, and 8 neutrons, what is its isotope called?

• Carbon-12

• Carbon-14

• Carbon-13

• Carbon-6

Multiple Choice

What distinguishes isotopes of the same element from each other?

• Number of protons

• Number of electrons

• Number of neutrons

• Atomic number

Multiple Select

Which of the following statements about hydrogen isotopes are correct?

• Protium has no neutrons.

• Deuterium has one neutron.

• Tritium has two neutrons.

• All hydrogen isotopes have the same number of electrons.

Open Ended

Explain how the mass of the three isotopes of hydrogen differs and why.

Multiple Choice

Which isotope of hydrogen is most abundant in nature?

• Protium

• Deuterium

• Tritium

• Hydrogen-4

Fill in the Blanks

The atomic mass number found in the Periodic Table is an average based on the

of isotopes in nature.

Fill in the Blanks

The atomic number of hydrogen is

.

Open Ended

Explain why the atomic number is important in identifying elements. Use examples from the periodic table to support your answer.

Multiple Choice

What does the atomic number of an element represent?

• The number of protons in an atom

• The number of neutrons in an atom

• The number of electrons in an atom

• The atomic mass of the element

Open Ended

Is there any aspect of isotopes you would like to explore further or need more clarification on?

Open Ended

What questions do you still have about isotopes or atomic theory after today's lesson?