Neutrons and Isotopes

Neutrons and Isotopes...

You will need your periodic Table​

• Neutral charge

• Mass of 1 AMU

• Do NOT affect the identity of the atom

One of the sub-atomic particles in the nucleus of the atom.​

Neutrons

Multiple Choice

If a neutral atom was to lose a neutron it would become...

• More positive

• More negative

• No change in charge

Multiple Choice

How would you calculate the number of neutrons in an atom?

• Atomic Number MINUS Atomic Mass

• Atomic Mass PLUS Atomic Number

• Atomic Mass MINUS Atomic Number

• Atomic Number PLUS Atomic Mass

Multiple Choice

Use your periodic table to determine the number of Neutrons that Nitrogen has in its nucleus.

• 6

• 7

• 8

• 9

Multiple Choice

If you were to remove one neutron from the nucleus of an atom, what would decrease?

• Charge

• Atomic Number

• Atomic Mass

What are Isotopes

Isotopes are atoms of the same element which have a different number of neutrons.

See two isotopes of Lithium pictured above. Lithium-6 and Lithium-7

Isotopes

There is no difference in the number of protons or electrons present when you compare both atoms

Multiple Choice

Observe the picture. How many Protons do the isotopes have?

• 2

• 3

• 6

• Not enough information to answer

Multiple Select

Which two of the following are different between isotopes of the same element?

• Atomic Number

• Atomic Mass

• Chemical Properties

• Number of Neutrons

Multiple Choice

Are Carbon and Nitrogen isotopes?

• Yes

• No

Multiple Choice

An Isotope of Aluminium has 13 protons and 25 neutrons. What is its mass number?

• 13

• 25

• 12

• 38

Multiple Choice

An Isotope of Carbon has an atomic mass of 13. How many protons does this isotope have?

• 5

• 6

• 7

• 8

Multiple Choice

An Isotope of Carbon has an atomic mass of 13. How many Neutrons does this isotope have?

• 5

• 6

• 7

• 8

Poll

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