Chapter 3: Water and Macromolecules

Question 1

covalent bond

Answer 1

the shared electrons are pulled more closely to an atom that’s more electronegative, making it slightly negative and the other slightly positive

Question 2

hydrogen bonds

Answer 2

very fragile type of bond, form and break very easily. constantly breaking and re-forming in water

Question 3

cohesion

Answer 3

water molecules stay close to each other because of hydrogen bonds and substance stays together
*contributes to transport of water and nutrients against gravity in plants

Question 4

adhesion

Answer 4

clinging of substances to each other

*contributes to transport of water through plants-attach to cell walls

Question 5

polar molecule

Answer 5

overall charge is unevenly distributed

Question 6

surface tension

Answer 6

measure of how difficult it is to break the surface of a liquid
*water has an unusually high surface tension