©SOPHIABENNETT
EXAM_SOLUTIONS GUARANTEED SUCCESS 2024/2025 ACADEMIC YEAR
©SOPHIABENNETT 9/3/24 2024/2025
, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM
AP Biology Unit 1 Test Study Guide with
Complete Solutions
water - Answer✔️✔️--polar molecule
-polar colvalent bonds
-oxygen end is partial negative and the hydrogens have a partially positive end
-cohesive
polar covalent bonds - Answer✔️✔️--opposite ends of the molecule have opposite
charges
cohesion - Answer✔️✔️--H bonding between H2O creates it (sticky)
-allows for the movement of water against gravity
-high surface tension
-water moves up a tree by transpiration (helped by ____)
adhesion - Answer✔️✔️--H2O molecules form H bonds with other substances
~capillary action
~meniscus
~water climbs up fiber
solvent - Answer✔️✔️--water is the universal one
-polar water molecules will surround the (+) and (-) ions causing the ions to separate
and dissolve
-dissolve solutes and create aqueous solutions
Page | 1
, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM
hydrophilic - Answer✔️✔️--some molecules have an affinity for water
-polar and ionic molecules
-ex: cotton, cellulose, paper
hydrophobic - Answer✔️✔️--some substances do not have an affinity for water
-nonpolar and non ionic substances
-ex: fat, glycerol, oils
floats - Answer✔️✔️--less dense when it is solid, water ______
-forms crystal lattice structure
-important because oceans and lakes do not freeze solid
~insulates water below
~seasonal turnover of lakes
specific heat - Answer✔️✔️--the amount of heat that must be absorbed or lost for 1g to
change its temperature by 1C
-water had high _____ due to H bonding
-resists change in temp
-moderates temp on earth
evaporative cooling - Answer✔️✔️--organisms use to regulate their temperature
-ex: sweating
-water evaporates through a surface, cooling occurs
acidic - Answer✔️✔️-If [H+]>[-OH]
basic - Answer✔️✔️-If [-OH]>[H+]
pH scale - Answer✔️✔️--how acidic or basic a solution is
Page | 2
EXAM_SOLUTIONS GUARANTEED SUCCESS 2024/2025 ACADEMIC YEAR
©SOPHIABENNETT 9/3/24 2024/2025
, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM
AP Biology Unit 1 Test Study Guide with
Complete Solutions
water - Answer✔️✔️--polar molecule
-polar colvalent bonds
-oxygen end is partial negative and the hydrogens have a partially positive end
-cohesive
polar covalent bonds - Answer✔️✔️--opposite ends of the molecule have opposite
charges
cohesion - Answer✔️✔️--H bonding between H2O creates it (sticky)
-allows for the movement of water against gravity
-high surface tension
-water moves up a tree by transpiration (helped by ____)
adhesion - Answer✔️✔️--H2O molecules form H bonds with other substances
~capillary action
~meniscus
~water climbs up fiber
solvent - Answer✔️✔️--water is the universal one
-polar water molecules will surround the (+) and (-) ions causing the ions to separate
and dissolve
-dissolve solutes and create aqueous solutions
Page | 1
, ©SOPHIABENNETT EXAM SOLUTIONS_2024/2025 Tuesday, September 3, 2024 10:30 AM
hydrophilic - Answer✔️✔️--some molecules have an affinity for water
-polar and ionic molecules
-ex: cotton, cellulose, paper
hydrophobic - Answer✔️✔️--some substances do not have an affinity for water
-nonpolar and non ionic substances
-ex: fat, glycerol, oils
floats - Answer✔️✔️--less dense when it is solid, water ______
-forms crystal lattice structure
-important because oceans and lakes do not freeze solid
~insulates water below
~seasonal turnover of lakes
specific heat - Answer✔️✔️--the amount of heat that must be absorbed or lost for 1g to
change its temperature by 1C
-water had high _____ due to H bonding
-resists change in temp
-moderates temp on earth
evaporative cooling - Answer✔️✔️--organisms use to regulate their temperature
-ex: sweating
-water evaporates through a surface, cooling occurs
acidic - Answer✔️✔️-If [H+]>[-OH]
basic - Answer✔️✔️-If [-OH]>[H+]
pH scale - Answer✔️✔️--how acidic or basic a solution is
Page | 2
