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Year 9 atoms revision AQA Flashcards | StudBud
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Year 9 atoms revision AQA
Year 9 atoms revision AQA
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#Chemistry#atomicstructure#elements
Flashcards
5 cards
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Practice quiz
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Questions
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Answers
1
Which subatomic particle has a positive charge
neutron
electron
proton
atom
2
Why are atoms neutral?
same number of protons and electrons
No electrons in the nucleus
neutrons are neutral
No protons on shells
3
What does the mass number tell us?
number of neutrons
Number of protons + neutrons
Number of electrons
number of electrons and neutrons
4
Who investigated the structure of the atom using gold foil
Marie Curie
Albert Einstein
Ernest Rutherford
Aristotle
5
What is the centre of the atom called?
nucleus
neutron
nuclear
Proton
