Atomic Structure Quiz 0.0 / 5 ? ChemistryAtomsGCSEAQA Created by: mm2004Created on: 10-09-18 20:06 A nucleus contains... Protons and neutrons 1 of 11 What is the atomic number? Number of protons in an atom 2 of 11 What is the mass number? Number of protons and neutrons 3 of 11 What is an isotope? A variant of an element with the same number of protons but a different number of neutrons 4 of 11 Isotopes of an element have the same atomic number but different mass number. True or false? True 5 of 11 What are ions? Charged particles that form when atoms lose or gain electrons 6 of 11 Positively charged ions form when... Electrons are lost 7 of 11 Why are most atoms neutral? Because they have an equal number of protons and electrons 8 of 11 What is the radius of an atom? 1 × 10-10 m 9 of 11 What is the radius of a nucleus? 1 x 10-14 10 of 11 How can you calculate the number of neutrons in a particle? mass number - atomic number 11 of 11
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