CH3.3 Isotopes and Average Atomic Mass

Front

What are isotopes?

Back

Atoms of the same element that have different numbers of neutrons.

Front

How is the mass number of an atom calculated?

Back

The mass number is the sum of the number of protons and neutrons in the nucleus.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is the mass number of Carbon-14?

Back

14.

Front

How many protons does Carbon-14 have?

Back

6 protons.

Front

How many neutrons does Carbon-14 have?

Back

8 neutrons.

Front

What is the relationship between isotopes and mass number?

Back

Isotopes of an element have the same atomic number but different mass numbers due to varying numbers of neutrons.

Front

What is the significance of the atomic number in the periodic table?

Back

The atomic number determines the position of an element in the periodic table and its chemical properties.

Front

Can isotopes have different chemical properties?

Back

Generally, isotopes of an element have similar chemical properties but may differ in physical properties.

Front

What is the average atomic mass of an element?

Back

The weighted average of the masses of all the naturally occurring isotopes of an element.