Water, Buffers, Carbon, bonds and interactions

Question 1

1. What is the definition of hydrophilic and hydrophobic?

Answer 1

hydrophobic - water hating
hydrophilic - water loving

Question 2

2. What are amphipathic molecules?

Answer 2

molecules that contains hydrophobic and hydrophilic properties

Question 3

3. What is the chemical definition of an acid and a base?

Answer 3

acids: proton donors
bases: proton acceptors

Question 4

4. What is the definition of the pH value?

Answer 4

determine the acidity or basicity of a solution on a logarithmic scale

Question 5

6. What are buffers?

Answer 5

used to neutralize a solution
mixtures of weak acid and salts of strong base
mixtures of weak base and salts of strong acid

Question 6

7. For what is the Henderson-Hasselbalch equation used for?

Answer 6

calculates the pH of buffered solution

Question 7

8. Which 4 major biomolecule types contain carbon?

Answer 7

carbohydrates
lipids
nucleic acids
proteins

Question 8

9. What is the main feature of a covalent bond regarding electrons of two molecules?

Answer 8

electron sharing (single/double or triple bond)

Question 9

10. What is the difference between intramolecular and intermolecular force?

Answer 9

inter- between
intra - within (stronger bound out of the 2)

Question 10

11. What is a hydrogen bond – between which molecules does it form in pure water?

Answer 10

weak bond interaction between hydrogen and associated with electronegative atoms (N,O,F)

Question 11

12. What are functional groups?

Answer 11

differentiating chemical properties between molecules