Protons, Neutrons, and Electrons: Calculations & Formulae
Science
Grade 8
10 questions
~20 mins
1 views0 downloads
About This Worksheet
This worksheet explores the fundamental particles within atoms—protons, neutrons, and electrons—with emphasis on calculations, concepts, and real-world applications for Grade 8 students.
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Protons, Neutrons, and Electrons: Calculations & Formulae
Subject: ScienceGrade: Grade 8
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Untitled Worksheet
Grade Grade 8
A
Concept Review of Atomic Particles
Answer the following questions to review your understanding of protons, neutrons, and electrons.
1.
Define a proton and state its charge.
[2 marks]2.
Explain the role of neutrons in an atom.
[2 marks]3.
What is the electrical charge of an electron?
[1 mark]B
Calculations Involving Atomic Particles
Use the formulas provided to complete the following numerical problems.
1.
Calculate the number of neutrons in an atom with an atomic number of 11 and a mass number of 23.
[3 marks]2.
An isotope of carbon has 6 protons and 8 neutrons. What is its mass number?
[2 marks]C
Practical and Theoretical Application
Answer the following questions based on practical scenarios and theoretical understanding.
1.
Describe a simple experiment to determine the number of protons in an element's atom.
[4 marks]2.
Why is it important to understand the number of electrons in an atom when considering chemical reactivity?
[3 marks]D
Data Analysis and Real-World Applications
Interpret the following scenarios and apply your knowledge to real-world contexts.
1.
An element has an atomic number of 15 and a mass number of 31. What are the numbers of neutrons and electrons in a neutral atom of this element?
[3 marks]2.
Explain how isotopes differ and give an example related to carbon.
[4 marks]3.
In industries like medicine or energy, why is understanding atomic structure important?
[3 marks]Quick Actions
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Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet