Periodic Table Intro

The Atomic number is known as the _______

• Number of electrons in an atom

• Number of Protons in an atom

• Number of neutrons in an atom

• Number of Protons and electrons in an atom

The number at the bottom of each square on the periodic table is the ...

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

Where are the nonmetals located on the Periodic Table?

• On the right

• On the left

• On the stairstep

Which of these is a metalloid?

• Na (#11)

• As (#33)

• O (#8)

What is the chemical symbol for Lithium?

• H
• He
• Li
• N

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

Metals are...

• dull, brittle, insulators.

• shiny or dull, brittle, semiconductor.

• shiny, malleable, conductors.

• shiny, dull, insulator.

What properites do nonmetals have in common?

• Poor conductor of electricity

• Good conductor of thermal energy

• Soft and Malleable

• Shiny, lustrous surface

Periods on the periodic table are __________.

• Horizontal Rows
• Vertical Columns

Anytime you see the word SEMICONDUCTOR - what substance do you have?

• Metal
• Nonmetal
• Metalloid