In the PhET simulation window, click on the Intro tab and check the “Energy Symbols” box in the upper right. Perform the described tasks and fill in the blanks with the appropriate terms.
Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer.
Energy can exist in a variety of forms. Energy is never lost, but rather it is converted between forms. When examining a system, the internal energy of that system can change such that it loses or gains energy to or from its surroundings, and the form of energy does not matter. The change in the internal energy of a system is
ΔE = Efinal − Einitial
which can also be simply represented by
E = q + w
where q signifies the heat absorbed (or released) by the system, and w signifies the work done on a system. The values for q and w can be negative if the system loses heat or performs work, respectively. The processes of energy transfer can be described as endothermic (where endo indicates energy going into the system) or exothermic (where exo indicates energy leaving the system). Click on the image to explore this simulation, which shows how energy is transferred between objects in either the same form or through conversions. When you click the simulation link, you may be asked whether to run, open, or save the file. Choose to run or open it.
When the simulation is opened, you will see two options. Select the image labeled Intro, which will open to see various objects that can be placed on a heating/cooling surface. Checking the “Energy Symbols” box in the upper right allows you to view the internal energy of the objects and the transfer of thermal energy. Clicking the Systems tab of the simulation allows you to view energy conversions by connecting different energy-producing and energy-converting sources. There are twelve different working configurations for these sources.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Endothermic & Exothermic Reactions concept. You can view video lessons to learn Endothermic & Exothermic Reactions. Or if you need more Endothermic & Exothermic Reactions practice, you can also practice Endothermic & Exothermic Reactions practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Smith's class at URI.