Basics of Chemistry

What is an atom?

• The smallest unit of matter

• The smallest unit of measurement

• Your next door neighbor

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Which part of the atom has a positive charge?

• Proton

• Neutron

• Electron

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Which part of the atom has a negative charge?

• Proton

• Neutron

• Electron

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Which part of the atom has a neutral charge?

• Proton

• Electron

• Neutron

Match the following properties with their classification as either an intensive or extensive property.

• Temperature at which an object changes from solid to liquid

• Mass

• Amount of matter in an object

• Metallic

• Appearance of an object

• Silver

• Color of an object

• Melting point

What are atoms made up of?

• Protons, neutrons, electrons

• Protons, nucleus, electrons

• Proteins, neutrons, electrons

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What does the atomic number tell you?

• The number of neutrons

• The number of protons

• The number of protons + neutrons

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What does the atomic mass tell you?

• The number of neutrons + protons

• The number of electrons

• The number of electrons + protons

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How many protons are in Neon? (hint: atomic number)

• 20

• 10

• 30

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How many neutrons are in Neon? (hint: atomic mass - atomic number)

• 20

• 10

• 30

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