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Combined Science: Chemistry

GCSE · Edexcel · foundation

QuestionsFlashcards

Obtaining & Using Metals
Reversible Reactions & Equilibria
- Reversible Reactions & Equilibrium
  3
- The Haber Process
  4

Group 1
- Group 1 (Alkali Metals)
  4
- Group 1: Reactivity & Electronic Configurations
  4
Group 7
Group 0

The Nucleus Flashcards

All 4 cards in this deck

How does the size of the nucleus compare with the size of the whole atom?: The nucleus is very small compared with the overall size of the atom.
Where is most of the mass of an atom found?: Concentrated in the nucleus.
What is meant by the mass number of an atom?: The total number of protons and neutrons in the atom.
What is meant by the atomic number of an atom?: The number of protons in the nucleus — the same for every atom of an element and unique to that element.