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BCS 1010 (Biological Chemistry) EXAM 1 STUDY GUIDE QUESTIONS AND ANSWERS COMPLETE RATED A.
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BCS 1010 (Biological Chemistry) EXAM 1 STUDY GUIDE QUESTIONS AND ANSWERS COMPLETE RATED A.
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BCS 1010 (Biological Chemistry) EXAM 1STUDY GUIDE QUESTIONS AND ANSWERS
COMPLETE RATED A.
What are the 4 emergent properties of water?
Correct Answer -1. Cohesive behavior
2. Temperature regulation
3. Universal solvent
4. Expand when freezing
What property of water do plants use to move water against gravity?
Correct Answer -Adhesion
What type of energy is temperature used to measure?
Correct Answer -kinetic energy
What is specific heat?
Correct Answer -The amount of energy needed to raise the temperature of
1 gram of a substance by 1 degree Celsius.
What is the specific heat of water?
Correct Answer -4.184 J/gC
What is heat of vaporization?
Correct Answer -The amount of energy required for the liquid at its boiling
point to become a gas
,What is evaporative cooling?
Correct Answer -(SWEAT) As a liquid evaporates, the surface of the liquid
that remains behind cools
How does evaporative cooling influence the climate around large bodies
of water?
Correct Answer -The surface of water is warmer due to light energy.
The water underneath is cooler because the warmer water stays at the top.
What is a solution?
Correct Answer -a mixture of solute and solvent
What is a solvent?
Correct Answer -the substance in which the solute dissolves
What is a solute?
Correct Answer -Substance being dissolved
What is a hydrophobic molecule?
Correct Answer -repels water, [lipid], NON-POLAR
What is a hydrophilic molecule?
Correct Answer -attracts to water, POLAR
What is a mole?
Correct Answer -the relative formula mass of a substance in grams
What is molarity?
Correct Answer -the number of moles of solute per liter of solution
, What is an acid?
Correct Answer -pH<7
Higher amounts of [H⁺]
What is a base?
Correct Answer -pH>7
Decrease amount of [H⁺]
How does [H⁺] affect pH?
Correct Answer -Higher [H⁺] = More ACIDIC
Lower [H⁺] = More BASIC
What is a buffer?
Correct Answer -a substance that minimizes changes in pH
What is cohesion?
Correct Answer -the sticking together of particles of the same substance
(ex. water together)
What is adhesion?
Correct Answer -the clinging of one substance to another (ex. water
clinging to the insides of a tree when going up)
What is a hydration shell?
Correct Answer -the sphere of water molecules around a dissolved ion
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