Atomic Structure (AQA GCSE Physics Combined Science): Flashcards
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Practise the cards
15 cards from this deck
Relative charge of a proton
Relative charge of a proton
+1
Relative charge of a neutron
Relative charge of a neutron
0
Relative charge of an electron
Relative charge of an electron
-1
Relative mass of a proton
Relative mass of a proton
1
Relative mass of a neutron
Relative mass of a neutron
1
Typical radius of an atom
Typical radius of an atom
metres
Nucleus radius compared to atom radius
Nucleus radius compared to atom radius
10,000 times smaller
Where is most of an atom's mass located
Where is most of an atom's mass located
In the nucleus
Thomson's Plum Pudding Model description
Thomson's Plum Pudding Model description
Ball of +ve charge with -ve electrons embedded in it
Rutherford: most alpha particles went straight through
Rutherford: most alpha particles went straight through
Atom is mostly empty space
Bohr's model: where electrons orbit
Bohr's model: where electrons orbit
At specific distances (energy levels or shells)
Chadwick's discovery
Chadwick's discovery
Proved the existence of the neutron
Overall charge of an atom
Overall charge of an atom
No overall charge
Effect of absorbing EM radiation on electron
Effect of absorbing EM radiation on electron
Moves to a higher energy level
Atomic number represents
Atomic number represents
Number of protons and electrons