Atomic Mass Exploration
A worksheet for 7th-grade science students to explore the concept of atomic mass, its components, and how it relates to isotopes.
Includes
Standards
Topics
Atomic Mass Exploration
Name:
Date:
Score:
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?
Proton
Neutron
Electron
Nucleus
2. An atom with 6 protons, 6 neutrons, and 6 electrons would have an atomic mass of approximately:
6 amu
12 amu
18 amu
36 amu
1. All atoms of the same element have the exact same atomic mass.
True
False
2. The atomic number of an element is equal to its atomic mass.
True
False
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:
A:
B:
C: