Understanding Conductors, Semiconductors, and Insulators

What is the typical number of valence electrons in a conductor?

• 5 to 8

• None

• 4

• 1 to 3

Why can electrons in conductors move freely?

• Because the core has a negative charge

• Because the attraction force is weak

• Because the core has more electrons than protons

• Because the attraction force is strong

What is the charge of the core in a silicon atom?

• Positive 3

• Positive 2

• Positive 4

• Positive 1

How does the attraction force in semiconductors compare to conductors?

• It is weaker

• It does not exist

• It is the same

• It is stronger

What is the charge of the core in a chlorine atom?

• Positive 5

• Positive 8

• Positive 6

• Positive 7

Why can't electrons in insulators move freely?

• Because the core has more electrons than protons

• Because the attraction force is very strong

• Because the core has a negative charge

• Because the attraction force is weak

At room temperature, how does a semiconductor behave?

• Like a metal

• Like a superconductor

• Like an insulator

• Like a conductor

What is the typical number of valence electrons in a semiconductor?

• 1 to 3

• 4

• None

• 5 to 8

Which of the following has the strongest attraction force between the core and valence electrons?

• All have the same

• Conductor

• Semiconductor

• Insulator

What is the main reason conductors can conduct electricity?

• They have more protons than electrons

• They have a strong attraction force

• Their electrons are free to move

• They have a negative core charge