Chapter 3 SG - Chapter 3 Polar molecule- the opposite ends...

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Chapter 3 Polar molecule- the opposite ends of the molecule have opposite charges Four Emergent Properties of Water- contributes to possibility of life on earth a. Cohesion- the collective hydrogen bonds that allow water molecules to stick with each other 1. Adhesion- water’s ability to stick to other molecules; aids water supply through plant walls against gravity 2. Surface Tension- measure of how difficult it is to stretch/break water; H 2 O has high S.T. (i.e. pond skaters) b. Moderation of Temperature 1. Absorbs heat from air that is warmer 2. Releases heat to air that is cooler 3. Kinetic Energy- energy of motion, where heat measures total F K 4. Temperature- measures heat at the average F K 5. Thermometer- measures change in temperature , or the change in average kinetic energy. 6. Equilibrium - occurs when two objects of different temp. expel heat until equal temp. is reached 7. Calorie- amount of heat taken to raise temp. of 1g of water by 1 degree 8. Kilocalorie- heat taken to raise 1 kg of water by 1 degree (Food calories) 9. Joule- energy unit, where 1J=0.239 cal; 1cal=4.184 J 10. High Specific Heat- amount of heat needed for 1g of substance
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Chapter 3 SG - Chapter 3 Polar molecule- the opposite ends...

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