Ch 24: ILTS Biology: Solutions

About This Chapter

Let us help you review information on solutions, including molality, dilution of solutions and the solubility of gases, as you study for the ILTS Biology exam. These lively lessons and quizzes can prepare you to correctly answer these types of exam questions.

ILTS Biology: Solutions - Chapter Summary

Use this chapter's lessons to renew your knowledge of the properties of solutions and calculations involving them as you study for the ILTS Biology exam. Our videos will prepare you to answer questions on topics including:

  • The rate of dissolution
  • Solutions, electrolytes and nonelectrolytes
  • Solubility and solubility curves
  • Molarity and molality concentration
  • Calculations involving dilution of solutions
  • Colligative properties, Raoult's law and determining molar mass
  • Solubility of gases

These lessons are brief, averaging about five minutes each, and are taught by experts who understand what you should know in preparation for the exam. A clickable timeline lets you quickly locate key points in the video you wish to review.

ILTS Biology: Solutions Chapter Objectives

Illinois requires passing the ILTS Biology exam as one of the licensing requirement to teach math in a public school. The exam's 125 multiple-choice questions are divided into six subareas, including Science and Technology, Physical Science, and Organismal Biology and Ecology.

Because they also consist of multiple-choice questions, the quizzes that follow our video lessons offer practice in answering questions in a format like you'll encounter on the exam. The quizzes also let you evaluate your learning and see where extra study may be needed.

7 Lessons in Chapter 24: ILTS Biology: Solutions
Test your knowledge with a 30-question chapter practice test
The Rate of Dissolution: Factors and Definition

1. The Rate of Dissolution: Factors and Definition

Learn what dissolution is and the factors that affect the rate of dissolution, such as temperature, surface area, polarity and pressure. Learn what miscible and immiscible mean in regards to liquids.

Solutions, Electrolytes and Nonelectrolytes

2. Solutions, Electrolytes and Nonelectrolytes

Learn what a solution is and how it is formed. Learn how to express the concentration of a solution in terms of molarity, molality and mass percent. Discover the differences between an electrolyte and a nonelectrolyte.

Solubility and Solubility Curves

3. Solubility and Solubility Curves

Learn what solubility is as well as the definitions of 'saturated,' 'unsaturated' and 'supersaturated.' Learn how to determine the solubility of a substance in water by using a solubility curve. Discover the effects of pressure and temperature on the solubility of liquids, solids and gases.

Calculating Molarity and Molality Concentration

4. Calculating Molarity and Molality Concentration

Learn the abbreviations and meaning of molarity and molality. Then apply what you have learned by going over some sample calculations with given concentrations.

Calculating Dilution of Solutions

5. Calculating Dilution of Solutions

Learn what a solution is and how to properly dilute a new solution from a stock solution. Learn the dilution equation that combines molarity, the volume of stock solution and desired solution to determine how much stock solution is needed for the new solution.

Colligative Properties and Raoult's Law

6. Colligative Properties and Raoult's Law

Learn how vapor pressure and osmotic pressure are colligative properties. Learn Raoult's Law and how to use it to determine the vapor pressure of a solution. Learn the equation for determining osmotic pressure and how to use it to determine the molar mass of a substance.

The Solubility of Gases in a Liquid

7. The Solubility of Gases in a Liquid

In this video lesson, you will learn what solubility is and the factors that affect gas solubility. We will use real-life examples to illustrate the importance of understanding solubility. A quick quiz will then test our new knowledge.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

Other chapters within the ILTS Science - Biology (105): Practice and Study Guide course