Physical Science Chapter 5-6 Review

What did Dmitri invent?

• Children

• Periodic Table

• Russian currency

• Calculator

How did Dmitri predict elements?

• Time traveled

• Predicted the properties by the atomic numbers left

• Guess and checked

• Calculated the atomic mass and properties

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How are the elements arranged on the periodic table today?

• By atomic mass

• By number of electrons

• By atomic number

• By alphabetic order

2 rows beneath the main periodic table

• Lanthanide

• Lanthanide and Actinide

• Lanthanide and Hydrogen

• Actinide and Hydrogen

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

• groups

• towers

• periods

• atomic numbers

The Modern Periodic Table of Elements is arranged by

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

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Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

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Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

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What is the symbol for Potassium?

• P
• K
• Pb
• Pd

What is the symbol for Carbon?

• C
• Ca
• Cl
• H