Conservation of Charge

Electrons will move from object A to object B if they come into contact with each other.

• True

• False

Tags

NGSS.MS-PS2-3

Looking at the picture of object A and object B, one would have so say that the net charge

• before they interact is greater than the net charge after they interact.

• before they interact is less than the net charge after they interact.

• before they interact is the same as the net charge after they interact.

Tags

NGSS.HS-PS3-5

NGSS.HS-PS2-5

What is the charge of object B BEFORE it interacts with object A?

• -2

• +3

• -3

• none of the above

Do the spheres attract or repel after they exchange charge?

• Attract

• Repel

• Neither

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

Which of the following are true of charges? Choose all that apply.

• Like charges repel.

• Like charges attract.

• Opposite charges repel.

• Opposite charges attract.

• A positively charged object has lost electrons.

Tags

NGSS.HS-PS2-4

Which of the following elements would most likely be a semiconductor?

• Sodium

• Silicon

• Lithium

• Sulfur

Which of the following elements would most likely be a good conductor?

• Chlorine

• Boron

• Magnesium

• Silicon

Which of the following elements would most likely be an insulator?

• Oxygen

• Magnesium

• Silicon

• Aluminum

Protons do not jump from object to object. Electrons, however, are able to jump from object to object because they are

• loosely bound (held) to the atom.

• negative in charge.

• smaller in mass.

• attracted to positive charges

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

NGSS.HS-PS2-5

A conductor differs from an insulator in that a conductor

• has more protons than electrons.

• has more electrons than protons.

• allows electrons to move more freely

• holds onto its electrons very strongly