Chemical Elements Worksheet
Explore the fundamental building blocks of matter with this Grade 7 Science worksheet on Chemical Elements. Learn about the periodic table, element properties, and basic atomic structure.
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Chemical Elements Worksheet
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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. What is the smallest unit of an element that maintains the chemical identity of that element?
Molecule
Compound
Atom
Proton
2. Which of the following is a characteristic of a metal element?
Dull and brittle
Good conductor of heat and electricity
Poor conductor of heat and electricity
Exists only as a gas at room temperature
3. The vertical columns on the periodic table are called , and they contain elements with similar chemical properties.
4. The number of protons in an atom is known as its number.
5. Elements that have properties of both metals and nonmetals are called .
6. Look at the image below. Explain what the atomic number and atomic mass represent for an element on the periodic table.
7. Name two common elements that are essential for human life and briefly explain their importance.
8. All elements on the periodic table are naturally occurring.
True
False
9. The atomic mass of an element is primarily determined by the number of protons and electrons.
True
False
Use the words in the bank to complete the sentences below.
10. The positively charged particles found in the atom's nucleus are called .
11. are neutral particles also located in the atom's nucleus.
12. Negatively charged particles that orbit the nucleus are called .
13. The central part of an atom, containing protons and neutrons, is called the .