Ch 11: Elements, Compounds, Mixtures & Solutions - ORELA Middle Grades General Science

About This Chapter

See the wonders of science once again by examining how to dissolve away any problems with elements, compounds, mixtures and solutions. We have fused all the scientific facets together so that you can pass the ORELA Middle Grades General Science exam and construct your career.

ORELA Middle Grades General Science: Elements, Compounds, Mixtures & Solutions - Chapter Summary

The ORELA Middle Grades General Science program deals with many topics, and the focus now will be centered on this chapter. It involves lessons that highlight the process of solving the solution mixture problem. As you prepare for the exam, you'll study the following:

  • Staying properly hydrated with solutions
  • Asking whether it will dissolve or not
  • Buying time before things dissolve
  • Passing the number of particles test
  • Letting off some steam with Raoult's Law
  • Taking equal measure of all hands stirring the pot
  • Weighing in on how to pen proper density

Filling in the watery void can also be handled through our fun and enjoyable online videos. Feel like reviewing a section? The main points of the videos are conveniently linked for you to advance to. Let our team know any way they can help, too, if a question arises from your studies.

ORELA Middle Grades General Science: Elements, Compounds, Mixtures & Solutions Objectives

There is always lots of ground to cover, regardless of how much we already know, and it is certainly no different getting certified in the state of Oregon. This is what gives us the impetus to set you up with all you need to make the challenge of the test that much less of an obstacle. Required know-how within the general science middle grades topics will include the present chapter that explains how waters can also concentrate within the space at hand. Details of the Elements, Compounds, Mixtures and Solutions chapter will be found in the physical science content domain which comprises 31 percent of the complete ORELA test. Get a secure grip on the kinds of questions the ORELA test will bring with our own quiz featuring multiple-choice options, so you can have a good idea of when you're ready to test for ORELA certification.

7 Lessons in Chapter 11: Elements, Compounds, Mixtures & Solutions - ORELA Middle Grades General Science
Test your knowledge with a 30-question chapter practice test
Using Colligative Properties to Determine Molar Mass

1. Using Colligative Properties to Determine Molar Mass

In this lesson, we will explore the effect of colligative properties on a solution. We will learn how to calculate freezing point depression and see how it can be used to calculate the molar mass of an unknown substance.

Calculating Dilution of Solutions

2. 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

3. 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.

Calculating Molarity and Molality Concentration

4. Calculating Molarity and Molality Concentration

Learn the abbreviations and meaning of molarity and molality and go over some sample calculations with given concentrations.

The Rate of Dissolution: Factors and Definition

5. 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.

Solubility and Solubility Curves

6. 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.

Solutions, Electrolytes and Nonelectrolytes

7. 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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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