Energy Transfer and Thermodynamics Concepts

Mr. Anderson explains energy changes in chemical systems, using Seattle and Bozeman to illustrate temperature moderation by the ocean. He discusses specific heat capacity, phase transitions, and enthalpy in reactions. A simulation demonstrates energy flow between objects, and the video concludes with examples of exothermic and endothermic reactions.

What factor contributes to Seattle's more temperate climate compared to Bozeman?

• Less vegetation

• Proximity to the Pacific Ocean

• Higher altitude

• More urban development

What is the term used to measure the energy consumed or released in different materials?

• Latent heat

• Thermal conductivity

• Thermal expansion

• Specific heat capacity

In a chemical reaction, what type of reaction occurs when energy is added to the system?

• Adiabatic

• Isothermal

• Endothermic

• Exothermic

What happens to energy when a warmer object is placed in colder water?

• Energy is destroyed

• Energy flows from the object to the water

• Energy remains constant

• Energy flows from the water to the object

What is the specific heat capacity of a material?

• The amount of energy required to break chemical bonds

• The amount of energy required to change the phase of a unit mass

• The amount of energy required to change the temperature of a unit mass by one degree

• The amount of energy required to increase the volume of a unit mass

Which material has the highest specific heat capacity?

• Iron

• Gold

• Aluminum

• Water

During a phase change from solid to liquid, what happens to the temperature of the substance?

• It fluctuates

• It increases

• It decreases

• It remains constant

What is the molar enthalpy of fusion?

• Energy required to change a unit mass from gas to liquid

• Energy required to change a unit mass from solid to liquid

• Energy required to change a unit mass from liquid to solid

• Energy required to change a unit mass from liquid to gas

In an exothermic reaction, what happens to the energy of the system?

• Energy is released to the surroundings

• Energy remains constant

• Energy is absorbed from the surroundings

• Energy is converted to mass

What is the result of an endothermic reaction in terms of energy?

• Energy is absorbed from the surroundings

• Energy is released to the surroundings

• Energy is converted to mass

• Energy remains constant