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Chapter 3 Vocab Bio
| Question | Answer |
|---|---|
| _______ Are molecules of opposite charges on different ends of the molecule | Polar Molecules |
| _______ is the binding together of like molecules often by hydrogen bonds | Cohesion |
| _______ is the attraction between different kinds of molecules | Adhesion |
| _______ is a measure of how difficult it is to stretch or break the surface of a liquid | Surface Tension |
| _______ is the energy associated with the relative motion of objects | Kinetic Energy |
| _______ is the total amount of kinetic energy due to the random motion of atoms or molecules in a body of matter also called thermal energy. Heat is energy in its most random form | Heat |
| _______ is a measure of the intensity of heat in degrees reflecting the average kinetic energy of the molecules | Temperature |
| _______ is a temperature scale equal to 5/9(F-32) That measures the freezing point of water at 0 degrees Celsius in the boiling point of water at 100 degrees Celsius | Celsius Scale |
| _______ Is the amount of heat energy required to raise the temperature of 1 gram of water by 1 degree Celsius; Also the amount of heat energy that 1 gram of water releases when it cools by 1 degree Celsius. | Calorie |
| _______ Is 1000 calories; the amount of heat energy required to raise the temperature of 1 kg of water by 1 degree Celsius | Kilocalorie |
| _______ is the amount of heat that must be absorbed or lost by 1 gram of a substance to change its temperature by 1 degree Celsius | Specific Heat |
| _______ is a unit of energy: 1j =0.239 Cal; 1cal = 4.184 j | Joule |
| _______ is the quantity of heat a liquid must absorb for 1 gram of it to be converted from the liquid to the gaseous state | Heat of Vaporization |
| _______ is the process in which the surface of an object becomes cooler during evaporation, owing to a change of molecules with the greatest kinetic energy from the liquid to the gaseous state | Evaporative Cooling |
| _______ is a liquid that is a homogeneous mixture of 2 or more substances | Solution |
| _______ is the dissolving agent of a solution. Water is the most versatile solvent known | Solvent |
| _______ is a substance that is dissolved in a solution | Solute |
| _______ is a solution in which water is the solvent | Aqueous Solution |
| _______ is the Sphere of water molecules around a dissolved ion | Hydration Shell |
| _______ means having an affinity for water | Hydrophilic |
| _______ is a mixture made up of a liquid and particles that remain suspended ( because of their large size) rather than dissolved in that liquid | Colloid |
| _______ means having an aversion to water tending to coalesce and form droplets in water | Hydrophobic |
| _______ is the sum of the masses of all the atoms in a molecule, sometimes called molecular weight | Molecular Mass |
| _______ is the number of grams of a substance that equals it's molecular weight in Dalton and contains Avogadros number of molecules | Mole |
| _______ is a common measure of solute concentration referring to the number of moles of solute per liter of solution | Molarity |
| _______ is a single protein with a charge of 1 +. The disassociation of a water molecule leads to the generation of a hydroxide ion (OH-) and a hydrogen ion (H+) | Hydrogen Ion |
| _______ is a water molecule that has lost a protein (OH-) | Hydroxide Ion |
| _______ Is a water molecule that has an extra protein bound to it (H3O+) | Hydronium Ion |
| _______ Is a substance that increases the hydrogen ion concentration of a solution | Acid |
| _______ Is a substance that reduces the hydrogen ion concentration of a solution | Base |
| _______ Is a measure of hydrogen ion concentration equal to -log [H+] and ranging in value from 0 to 14 | pH |
| _______ are substances that consists of acid and base forms in a solution and that minimizes changes in pH when extraneous acids or bases are added to the solution | Buffers |
| _______ is rain, snow or fog that is more acidic than PH 5.2 | Acid Precipitation |
Created by:
kittybroad