C.2 Unit 2 Exam Review

Which of the following statements best describes the relationship between distance and electrostatic force between two objects?

• Electrostatic force increases as distance increases.

• Electrostatic force decreases as distance increases.

• Electrostatic force remains constant regardless of distance.

• Electrostatic force is not affected by distance.

Tags

NGSS.HS-PS2-4

What happens to the electrostatic force between two charged objects as the magnitude of the charge on one of the particles increases?

• It increases.

• It decreases.

• It remains the same.

• It becomes zero.

Tags

NGSS.MS-PS2-3

Which of the following best explains why metals are good conductors of electricity?

• Metals have tightly bound electrons.

• Metals have free electrons that can move easily.

• Metals have a high density.

• Metals have a high melting point.

How does the molecular structure of water contribute to its ability to dissolve ionic compounds like salt?

• Water molecules are non-polar and repel ions.

• Water molecules have a rigid structure that traps ions.

• Water molecules are polar and can surround and separate ions.

• Water molecules are large and can absorb ions.

Which of the following best describes the energy stored in an electric field between two charged particles?

• It is kinetic energy.

• It is potential energy.

• It is thermal energy.

• It is chemical energy.

Tags

NGSS.MS-PS3-2

What type of energy is primarily involved when a charged particle moves in an electric field?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of the following best describes the interaction between two objects with opposite electric charges?

• They repel each other.

• They attract each other.

• They have no effect on each other.

• They neutralize each other.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What happens to the energy of two charged particles as they are moved closer together in an electric field?

• The energy increases.

• The energy decreases.

• The energy remains constant.

• The energy becomes zero.

Tags

NGSS.MS-PS3-2

Which of the following best describes the role of protons in determining the type of atom?

• Protons determine the atom's mass.

• Protons determine the atom's charge.

• Protons determine the atom's identity.

• Protons determine the atom's volume.

How does the structure of a thundercloud contribute to the formation of lightning?

• The cloud's top is negatively charged, and the bottom is positively charged.

• The cloud's top is positively charged, and the bottom is negatively charged.

• The cloud is uniformly charged throughout.

• The cloud has no charge.