Unit 4 Periodic Table (3h, 3i)

The alkali metals have how many valence electrons?

• 1
• 2
• 7
• 8

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The noble gases have how many valence electrons?

• 1
• 2
• 7
• 8

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In the modern periodic table elements are arranged by:

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

Membership in a family is based on the number of 

• electrons
• valence electrons
• protons
• neutrons

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Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

The blue atoms are called 

• metals
• nonmetals
• metalloids
• noble gases

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The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

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Which of the following is not a property of metals?

• brittle
• malleable
• lustrous
• conductive

What is the name of the group that never reacts--ever ever they are stable with a full outermost ring!!!

• noble gases
• transition
• halogens
• borons

What part of the atom determines the chemical properties?

• neutrons
• protons
• valence electrons
• Electron cloud

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NGSS.HS-PS1-2