In this lesson our instructor talks about properties of water. She talks about molecular structure of water and discusses water as a solvent. She then talks about acids, bases, and pH. Four complete example videos round up this lesson.
is polar. The electrons are more strongly attracted to the more
electronegative oxygen molecule than to the hydrogen molecule..
Water molecules are held together through hydrogen bonds. This
bonding is responsible for some of the properties of water.
special properties make it essential to life. Water is both strongly
cohesive and adhesive, has a high surface tension and both high heat
capacity and a high heat of evaporation.
can be divided into either hydrophilic, meaning water loving,
or hydrophobic, meaning water fearing.
dissolves like. For example, hydrophilic substances dissolve in
increase the concentration of H+ in a solution. Bases decrease the
concentration of H+ in a solution.
pH scale is used to describe how acidic or basic a solution is.
Solutions with a lower pH are more acidic. Those with a higher pH
are more basic. A solution with a pH of 7 is neutral.
Properties of Water
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
The book and CD package include three full length practice exams that are presented with all questions answered and explained. The author also presents detailed reviews of all test topics and includes multiple-choice and free-response questions with answers at the end of each topic's chapter.
This book has a great topic-by topic breakdown of the 14 must-know principles with sample questions and answers for each of the subjects. Laboratory Review includes a focused review of all 12 AP laboratory exercises. Included in this is 2 full length practice tests that stimulate the actual test along with answers and complete explanations.
This book includes a comprehensive biology test topic review, covering everything from photosynthesis to genetics to evolution. Cracking the AP Biology also includes testing strategies for the grid-in and essay section, great guidance on writing a high-scoring essay, and two full length practice exams with detailed explanations.