Question 1
Learning objective
Define isotopes as atoms of the same element with different numbers of neutrons.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Atoms and isotopes
Subtopic
Mass number, atomic number and isotopes
Aqa Gcse PhysicsAtomic structure
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Quick explanation
Define isotopes as atoms of the same element with different numbers of neutrons
- This point belongs to Atoms and isotopes, especially Mass number, atomic number and isotopes.
- You need to be able to define isotopes as atoms of the same element with different numbers of neutrons.
- The key ideas to know are isotope.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
isotope
Why it matters
This objective helps connect Mass number, atomic number and isotopes to exam-style questions, flashcards, and revision notes for Atoms and isotopes.
Quick student answer
What is isotopes?
Direct answer
In Physics, this page helps you answer questions about isotopes within Atoms and isotopes. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are isotope and mass number.
Key terms
- isotope: Atoms of the same element that have different numbers of neutrons.
- mass number: The total number of protons and neutrons in the nucleus of an atom.
Common trap
Misidentifying Isotopes: Remind that isotopes are atoms of the same element (same atomic number) that have different numbers of neutrons, giving them different mass numbers.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Describe atoms as very small particles with a radius of about 1 x 10^-10 metres.
The structure of an atom
- Describe the nucleus as the small central part of an atom.
The structure of an atom
- State that the nucleus contains protons and neutrons.
The structure of an atom
- State that nearly all the mass of an atom is concentrated in the nucleus.
The structure of an atom
- Describe electrons as negatively charged particles arranged in shells or energy levels around the nucleus.
The structure of an atom