Phase changes of water - Oakland Schools
Phase changes of water - Oakland Schools
Phase changes of water - Oakland Schools
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<strong>Phase</strong> Changes<br />
Activity #5-Everyday Reactions<br />
Question to be Investigated:<br />
What exothermic and endothermic reactions do you encounter on a daily basis?<br />
Objective:<br />
C5.4d Explain why freezing is an exothermic change <strong>of</strong> state.<br />
Teacher Notes:<br />
This is a structured inquiry project that should be done when students have a strong<br />
understanding <strong>of</strong> exothermic and endothermic reactions and heat flow.<br />
Real World Connections:<br />
Students are tying in real world examples <strong>of</strong> heat flow in systems.<br />
Source:<br />
Buthelezi, T. et al. Glencoe Science Chemistry Matter and Change, Columbus, OH: The<br />
McGraw-Hill Companies, Inc.,2008.<br />
Procedure:<br />
Student Directions: Think about two exothermic and two endothermic reactions or<br />
processes that you encounter in your everyday life.<br />
Record the following information:<br />
• a description <strong>of</strong> each reaction or process<br />
• the direction <strong>of</strong> heat flow<br />
• the change in the enthalpy <strong>of</strong> the system<br />
• change in enthalpy <strong>of</strong> the surroundings<br />
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