electrostatics

Insulators are different than conductors in that insulators ____.

• do not contain electrons or protons 
•  do not contain any charge
• have a weaker affinity for electrons 
• do not allow charge to freely move 

Tags

NGSS.MS-PS2-5

A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod

• gains electrons
• loses electrons
• gains protons
• loses protons

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

 A balloon is rubbed against a student's hair and then touched to a wall. The balloon sticks to the wall due to

• magnetic forces between the particles of the balloon and the particles of the wall
• electrostatic forces between the particles of the balloon and the particles of the wall
• magnetic forces between the particles of the wall
• electrostatic forces between the particles of the balloon

When an object gains electrons it becomes __________

• Neutral

• Positively charged

• Negatively charged

Tags

NGSS.MS-PS2-3

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

• positively charged because it has excess electrons

• negatively charged because it has excess electrons

• positively charged because it has a deficiency of electrons

• negatively charged because it has a deficiency of electrons

This image shows the before picture, when a balloon is rubbed with polyester. Identify the correct after picture.

• 
• 
• 
• 

Tags

NGSS.MS-PS2-3

What is the name of the particle that is being transferred from one atom to another?

• Proton
• Neutron
• Electron
• Positron

How can objects become electrified?

• By running water over it

• Adding acid to them
• Rubbing with flannel
• Shaking them in the air

If two balloons have the same charge, what will happen if you place them close to each other?

• Nothing
• They will be attracted
• They will pop
• They will push each other away.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the overall charge on this balloon? (They are the same so look at either one!)

• +3
• -6
• +6
• -3

Tags

NGSS.MS-PS2-3