Mass and Moles Worksheet
Explore the concepts of mass, atoms, and moles with this engaging science worksheet for 7th grade.
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Mass and Moles: Understanding the Building Blocks of Matter
Name:
Date:
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Read each question carefully and provide your best answer. Some questions may require you to use your knowledge of atomic structure and the concept of moles.
1. Which of the following best describes the mass of an atom?
The number of electrons
The sum of protons and neutrons
The atomic number
The number of protons
2. What is the approximate mass of one proton?
0 amu
1 amu
10 amu
100 amu
3. The is a unit of measurement used in chemistry to express amounts of a chemical substance.
4. One mole of any substance contains approximately 6.022 x 10^23 .
5. Explain the difference between atomic mass and molar mass.
6. The mass of an electron is significantly larger than the mass of a proton.
True
False
7. Avogadro's number represents the number of particles in one mole of a substance.
True
False
8. Label the parts of the atom shown in the diagram below.
A:
B:
C: