Quiz 2 Flashcards
A water molecule is
A polar covalent bond that forms a 105 degree angle
Water constitutes ___ to ___ of the body
50% to 75%
What does polarity give water?
Solvency, cohesion, adhesion, chemical reactivity, and thermal stability
What is the ability to dissolve other chemicals
Solvency
Substances that dissolve in water
Hydrophilic
Substances that do not dissolve in water
Hydrophobic
The tendency of one substance to cling to another
Adhesion
The tendency of a substance to cling to itself
Cohesion
Solvent
Greater quantity
Solute
Being dissolved in solvent
Calorie
1 calorie of heat is required to raise the temperature of one gram of water one degree Celsius
How many calories can be lost in the evaporation of 1 gram of perspiration
580
Solution
Consists of solute and solvent
How big are solute particles
1 nm
Colloid
A mixture of larger particles in a solvent
How big are colloid particles
1 to 100 nm in size
Suspension
Has large particles mixed in a solvent
How big are suspension particles
100 nm
Suspensions are
Cloudy or opaque
Emulsion
A suspension of one liquid on another
What is an acid
A proton donor
Releases H+ in water
A base is
A proton acceptor
What is the ph of human blood and tissues
Between 7.35 and 7.45
What is a chemical reaction
A process in which a covalent or ionic bond is formed or broken
What are three ways to speed up a reaction
Heat, catalyst, and increasing the amount of reactants
Catabolism
Energy releasing decomposition reactions
Anabolism
Energy storing synthesis reactions
Organic chemistry
The study of compounds of carbon bound to hydrogen
Organic molecules
Carbohydrates, lipids, proteins, and nucleic acids
