Atomic Mass Exploration

Atomic Mass Exploration

Read each question carefully and answer to the best of your ability. Use your knowledge of atomic structure and atomic mass to complete the activities.

1. The atomic mass of an element is primarily determined by the number of   and   in its nucleus.

2. Protons have a   charge, while neutrons have   charge.

3. The unit used to express atomic mass is the   (amu).

1. Which subatomic particle contributes almost no mass to an atom?

2. An atom with 6 protons, 6 neutrons, and 6 electrons would have an atomic mass of approximately:

1. All atoms of the same element have the exact same atomic mass.

2. The atomic number of an element is equal to its atomic mass.

1. Explain the difference between atomic number and atomic mass.

2. What are isotopes? How do they affect the average atomic mass of an element?

Label the parts of the atom shown below: