periodic table

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

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The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

The atomic number tells you what?  READ THE ANSWERS CAREFULLY

• only the number of electrons
•  only the number of protons
• only the number of neutrons
• the number of both electrons and protons in an atom.

What does the 6 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

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What does 12.011 represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

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What does the C represent?

• atomic mass
• atomic number
• element name
• chemical symbol 

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These are found on the Periodic Table.

• Compounds
• Elements
• Mixtures

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the basic structural unit of matter

• atom

• matter

• element

• nucleus

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the positively charged subatomic particle contained in the nucleus of an atom

• proton

• neutron

• electron

• matter

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a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge

• proton

• neutron

• electron

• matter

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