periodic table

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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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Sodium (Na) is found in period 

• 3
• 2
• 4
• 1

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NGSS.HS-PS1-1

Sodium (Na) is found in group 

• 1
• 2
• 3
• 4

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NGSS.HS-PS1-1

Which statement is true concerning the periodic table?

• rows go up and down and groups go across the table

• groups go up and down and rows go across the table

• rows go up and down and groups go up and down the table

• rows go across the table and groups go across the table

Which two elements are in the same period?

• Boron and Carbon

• Potassium and Sodium

• Lithium and Magnesium

• Zinc and Nitrogen

An atom has 18 protons and 8 valence electrons. Which statement would best identify this element?

• The element is "happy" or stable because its outer energy level is filled.

• The element has an atomic mass of 18.

• The element is highly reactive with eight electrons in its outer shell.

• The element is a metal.

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NGSS.HS-PS1-1

Which two elements would have the same number of energy levels (shells)?

• Nickel and Palladium

• Magnesium and Lithium

• None of these elements

• Copper and Zinc

Determine which atom is being described here: Shiny, has the properties of both metals and nonmetals, and has three valence electrons.

• Tin (Sn)

• Boron (B)

• Germanium (Ge)

• Antimony (Sb)

Tags

NGSS.MS-PS1-1

Which group is the most stable?

• 17

• 1

• 2

• 18

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NGSS.HS-PS1-1