Review atom models

Which of these rescued the idea of things being made of round spheres called atoms?

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What is an electron?

• A positive part of the atom

• A big negative sphere inside the atom

• A small negative part of the atom

• A small positive part of the atom

Which of these experiments supported the idea of electrons?

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Which of these experiments supported the idea of a small nucleus?

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Which of these are diagrams?

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What was Rutherford's greatest finding?

• The atom is mostly made of electrons

• The atom has a big positive sphere and small negative spheres

• The atom is mostly empty space

• Thomson was right in his model

Complete the sentence:

"Opposite (negative and positive) charges _________________ "

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Complete the sentence:

"Same charges (positive and positive or negative and negative) ____________________ "

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