Isotopes Review

Front

What determines the identity of an atom?

Back

The number of protons in the nucleus.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

How do you calculate the mass number of an atom?

Back

Mass number = Number of protons + Number of neutrons.

Front

What is the mass number of Beryllium-9?

Back

9 (it has 4 protons and 5 neutrons).

Front

What is the difference between protons and neutrons?

Back

Protons are positively charged particles, while neutrons have no charge.

Front

How many protons does Xenon have?

Back

Xenon has 54 protons.

Front

What is the mass number of an atom with 61 neutrons and 54 protons?

Back

Mass number = 54 + 61 = 115.

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

What is the isotope notation for an atom with 6 protons and 8 neutrons?

Back

Carbon-14.

Front

How many neutrons are in Beryllium-9?

Back

5 neutrons.