# BIOL Chapter 3

 Define Adhesion: The clinging of one substance to another Surface Tension The measure of how difficult it is to stretch or break the surface of a liquid The energy of motion can collectively be defined as: Kinetic energy(The faster it moves, the greater the energy) The measure of matter's total kinetic energy due to the motion of its molecules: Heat The measure of heat intensity that represents theĀ average kinetic energy: Temperature How does an ice cube cool a drink? Not by adding coolness, but by absorbing heat from the drink itself What is the average human body temperature in Celsius? 37 Degrees Celsius What is a calorie? The amount of heat it takes to raise the temperature of 1g of water by 1 degree celsius One joule equals how many calories? 1 Joule = 0.239 Calories Define specific heat: The amount of heat that must be gained or lost to change the temperature of the substance by 1 degree celsius Why does water have such a high specific heat? Because of the hydrogen bonds in water molecules. Enough heat must be absorbed to break those bonds, which are very strong. Define hydration shell: The sphere of water molecules around each dissolved ion of solute Hydrophilic: Any substance that has an affinity for water Define colloid: A stable suspension of fine particles in a liquid Can a substance by hydrophilic without dissolving in water? Yes, (Colloids) What is a buffer? Substance that minimizes changes in the concentrations of H+ and OH- in a solution When CO2 dissolves in seawater, it reacts with water to form what? Carbonic Acid, a process collectively known as ocean acidification which lowers the overall pH of the ocean Acid Precipitation has a pH lower than ____? 5.2 AuthorGueza ID259054 Card SetBIOL Chapter 3 DescriptionWater Updated2014-01-29T17:14:45Z Show Answers