Inv4.Exp3 Test

What is the primary characteristic of an insulator?

• It readily allows heat passage
• B. It conducts electricity well
• C. It prevents the passage of heat and sound
• D. It has high current density

Which property remains constant regardless of the sample size?

• Mass
• Intensive property
• Volume
• Extensive property

What does Ohm's law describe?

• The relationship between mass and volume
• The relationship between current and electric field
• The relationship between temperature and resistance
• The relationship between voltage and mass

What are delocalized electrons?

• Electrons bound to a specific atom
• Electrons in covalent bonds only
• Electrons not associated with specific atoms or bonds
• Electrons in ionic bonds

Which material allows electric charges to flow easily?

• Wood
• Rubber
• Plastic
• Conductor

What is the primary purpose of a resistor in a circuit?

• To increase resistance
• To decrease current
• To store energy
• To generate electricity

Which property changes with the amount of material present?

• Density
• Temperature
• Extensive property
• Melting point

What is a conductor?

• A material that prevents electron movement
• A material containing electrons or charged ions that can move easily
• A material with no electrical properties
• A material that only conducts heat

Which of the following best describes an insulator?

• A material where electrons move freely
• A material containing only metals
• A material where electrons cannot move easily
• A material containing only ionic solutions

In insulators, where are electrons typically located?

• Moving freely throughout the material
• In ionic solutions only
• Between multiple nuclei
• In localized chemical bonds near specific nuclei