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2 cards from this section. Quick, good the night before a test.
Who discovered the electron?
Think of the experiment with cathode rays.
What charge do protons have?
Remember, they are found in the nucleus.
Who discovered the neutron?
Remember, he revealed the missing mass in the nucleus.
Protons reside in which part of the atom?
Consider what makes up the atomic nucleus.
Discuss how the discovery of the electron challenged the existing theory of matter in the 19th century and what implications this had for modern physics.
Consider how the inclusion of subatomic particles changes the understanding of elements.
If an atom contains 6 protons, 6 neutrons, and 6 electrons, identify the element and discuss its isotopes.
Remember that isotopes have the same number of protons but different neutrons.
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