Exam 2 (Optional)

Which of the following is true about temperature?

• It's the total energy of a substance

• It measures the average kinetic energy per particle

• It is the same as heat

• It depends on potential energy only

Tags

NGSS.HS-PS3-4

Absolute zero corresponds to:

• Zero entropy

• Zero gravitational potential

• No translational motion of particles

• The freezing point of water

Tags

NGSS.HS-PS3-2

Which temperature scale is used most often in scientific work?

• Fahrenheit

• Celsius

• Kelvin

• Rankine

5. The Kelvin scale sets 0 K at _____ zero and water boils at _____ K.

• absolute, 373

• absolute, 273

• relative, 373

• absolute, 100

Heat is best defined as:

• The amount of temperature in an object

• The energy stored in a material

• The transfer of thermal energy due to temperature difference

• The potential energy of molecules

Tags

NGSS.HS-PS3-4

Which of the following units can be used to measure heat?

• Calorie

• Joule

• Watt

• Kelvin

Tags

NGSS.HS-PS3-4

Heat always flows from a _____ object to a _____ one, until they reach equilibrium.

• hotter, colder

• colder, hotter

• solid, liquid

• liquid, solid

Tags

NGSS.HS-PS3-4

MCQ: Entropy is:

• The loss of energy in a system

• A measure of how many ways energy can be distributed

• The total heat in a system

• A force opposing heat flow

Which of the following statements aligns with the First Law of Thermodynamics?

• Energy is created during chemical reactions

• The total energy of a system remains constant

• Heat flows from cold to hot naturally

• All systems move toward lower energy

Tags

NGSS.HS-PS3-1

What does the Second Law of Thermodynamics say?

• Energy cannot be transferred

• Entropy remains unchanged in all processes

• Energy tends to spread out and become more evenly distributed

• Temperature always decreases in closed systems

Tags

NGSS.HS-PS3-4