Chapter 4 Review: Atoms and Their Parts

What are the three main parts of an atom?

• Rock, paper, scissors

• Proton, neutron, electron

• Atom, element, molecule

• Water, air, fire

Where are protons and neutrons found in an atom?

• Floating around outside

• In the nucleus (center)

• Inside the electrons

• Moving between atoms

What charge does a proton have?

• Positive (+)

• Negative (-)

• No charge

• It changes all the time

What charge does a neutron have?

• Positive (+)

• Negative (-)

• No charge

• Double charge

What charge does an electron have?

• Positive (+)

• Negative (-)

• No charge

• It depends on the atom

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What holds an atom together?

• The attraction between protons and electrons

• The size of the atom

• The color of the element

• The number of neutrons

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What does the electron cloud model show?

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Why do electrons stay near the nucleus?

• They are stuck there

• They are attracted to the protons

• They are too big to move away

• They have the same charge as protons

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How many electrons can fit in the first energy level?

• 1

• 2

• 8

• 10

What are the electrons in the outermost energy level called?

• Core electrons

• Valence electrons

• Inner electrons

• Free electrons