Chemical Elements Worksheet
Explore the fundamental building blocks of matter with this Grade 9 chemical elements worksheet, covering atomic structure, periodic table trends, and chemical properties.
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Chemical Elements Exploration
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Read each question carefully and answer to the best of your ability. Use your knowledge of chemical elements and the periodic table.
1. Which of the following is the defining characteristic of a chemical element?
Its mass number
The number of neutrons
The number of protons
Its electron configuration
2. Elements in the same group (column) of the periodic table typically have:
Similar atomic masses
Similar chemical properties
The same number of electron shells
The same number of protons
3. The atomic number of an element is equal to the number of in its nucleus.
4. Elements that are good conductors of heat and electricity are called .
5. The horizontal rows in the periodic table are called , while the vertical columns are called or families.
6. Explain the difference between an atom and an element.
7. Describe at least two trends that can be observed when moving across a period in the periodic table.
8. All elements are naturally occurring on Earth.
True
False
9. Isotopes of an element have the same number of protons but different numbers of neutrons.
True
False
10. Refer to the image below showing a typical element box from the periodic table. Identify what each labeled part represents.
A:
B:
C:
D: