Bio 1305 Chapter 3 - Water and Life Questions & Answers
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Bio 1305 Chapter 3 - Water and Life
Institution
Bio 1305 Chapter 3 - Water And Life
polar covalent bonds - ANSWERSunequal sharing of electrons (in water, the electrons spend more time closer to oxygen because its more electronegative)
polar molecule - ANSWERSmolecule with an unequal distribution of charge, resulting in the molecule having a positive end and a negative end (wate...
Bio 1305 Chapter 3 - Water and Life
Questions & Answers
polar covalent bonds - ANSWERSunequal sharing of electrons (in water, the electrons
spend more time closer to oxygen because its more electronegative)
polar molecule - ANSWERSmolecule with an unequal distribution of charge, resulting in
the molecule having a positive end and a negative end (water is V shaped because of it)
partial negative charge symbol - ANSWERSδ- (oxygen in H2O)
partial positive charge symbol - ANSWERSδ+ (hydrogen in H2O)
the four emergent properties of water - ANSWERS*emerge from hydrogen bonds
1. Cohesive behavior
2. Ability to moderate temperature
3. Expansion upon freezing
4. Versatility as a solvent
cohesion - ANSWERSan attraction between molecules of the same substance; helps
transport water and nutrients up in plants against gravity
surface tension - ANSWERSA measure of how difficult it is to stretch or break the
surface of a liquid
adhesion - ANSWERSthe clinging of one substance to another, such as water to plant
cell walls by means of hydrogen bonds
kinetic energy - ANSWERSenergy due to/of motion
thermal energy - ANSWERSkinetic energy associated with the random movement of
atoms or molecules; dependent on volume because total kinetic energy
temperature - ANSWERSrepresents the average kinetic energy of the particles that
make up a material; independent of volume because average
heat - ANSWERSthermal energy in transfer from one body of matter to another
calorie (cal) - ANSWERSunit of heat or other energy; the amount of energy/heat
required to raise 1 gram of water by 1 degree Celsius or the amoount it releases by
cooling 1 degree celsius; 1 cal is defined as 4.184 J
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