Ch 20: Relative Molecular Mass & Mole

About This Chapter

We can help you in your review of relative molecular mass and mole with the lessons in this chapter. We have put together this special study guide that will help you master these chemistry topics.

Relative Molecular Mass & Mole- Chapter Summary

You can discover new material or review what you have learned about relative molecular mass and mole by taking a look at the lessons in this chapter. When your studies are complete, you should meet the following goals:

  • Explain the different types of water
  • Learn how to write a molecular formula
  • Distinguish the difference between molar mass and atomic mass
  • Define solute concentration
  • Discuss the relationship between vapor pressure and osmotic pressure
  • Comprehend how solutions are formed
  • Give examples of electrolytes
  • Calculate the boiling-point elevation and freezing point depression

The lessons in this chapter are meant to give you an idea of basic chemistry topics related to relative molecular mass and mole. The short video lessons about five to ten minutes long. The text lessons highlight key terms and phrases that you should pay attention to. When you are ready, take the lesson quizzes and chapter exam to assess what you've studied so far.

15 Lessons in Chapter 20: Relative Molecular Mass & Mole
Test your knowledge with a 30-question chapter practice test
Isotopes and Average Atomic Mass

1. Isotopes and Average Atomic Mass

When you drink a glass of water, you are actually drinking a combination of heavy water and light water. What's the difference? Is it harmful? This video will explain the difference between the two types of water and go into detail on the significance of the different isotopes of elements.

Using Atoms and Ions to Determine Molecular Formulas

2. Using Atoms and Ions to Determine Molecular Formulas

In this lesson, you will learn how atoms and ions determine molecular formulas. You will understand how molecular formulas tell information about the type and quantity of atoms involved in a molecule. Lastly, we will discuss how to write a molecular formula for an ionic compound.

Mole-to-Mole Ratios and Calculations of a Chemical Equation

3. Mole-to-Mole Ratios and Calculations of a Chemical Equation

Learn what a mole ratio is and how to determine and write the mole ratio relating two substances in a chemical equation in this video lesson. Also, learn to make mole-to-mole calculations and solve problems involving moles of substances.

What is Molar Mass? - Definition, Formula & Examples

4. What is Molar Mass? - Definition, Formula & Examples

Compounds have mass, and this is what we call the molar mass. In this lesson, we will discuss the molar mass and go over examples on how to calculate it.

What is Atomic Mass? - Definition & Examples

5. What is Atomic Mass? - Definition & Examples

Atomic mass is a characteristic of an atom that is a measure of its size. It is plays a major role in the chemical properties of elements. This article discusses atomic mass and how it is calculated.

Solute Concentration: Definition & Overview

6. Solute Concentration: Definition & Overview

In this lesson, you will learn the definition of a solute concentration. Also, an example will be included to assist with your learning of the science behind a solute concentration.

Colligative Properties and Raoult's Law

7. 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.

Dissolved Gas: Process & Examples

8. Dissolved Gas: Process & Examples

How and why do we dissolve gas into other materials? In this lesson, explore the principles and process of dissolving gas and discover some of the common uses for this technique. Then, test your understanding with a brief quiz.

Solutions, Electrolytes and Nonelectrolytes

9. 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.

Weak Electrolyte: Definition & Examples

10. Weak Electrolyte: Definition & Examples

Electrolytes are very useful, from combating dehydration to aiding in battery function. Learn about a certain type of electrolyte called the weak electrolyte. Don't forget to test your knowledge by taking a quiz at the end of this lesson.

Dimer: Definition & Formation

11. Dimer: Definition & Formation

In this lesson, we'll cover the formation of different types of dimers. You'll learn how to recognize a variety of dimers and the useful functions they perform for us. Test your knowledge afterward with a short quiz.

Vapor Pressure: Definition, Equation & Examples

12. Vapor Pressure: Definition, Equation & Examples

This lesson explains the definition of vapor pressure, describes how vapor pressure changes as a function of temperature according to the Clausius-Clapeyron equation, and shows how to determine the vapor pressure of a single component in a mixture of liquids using Raoult's Law.

Freezing Point Depression: Definition, Equation & Examples

13. Freezing Point Depression: Definition, Equation & Examples

In this lesson, we will describe what it means to have a freezing point depression. We will explain how we determine the new freezing point and show examples of when this is used in the world.

Calculating Boiling-Point Elevation of a Solution

14. Calculating Boiling-Point Elevation of a Solution

In this lesson, you will learn how to calculate the boiling point of a solution using a simple equation. Additionally, you will review the concepts of solutions, molality, and electrolytes.

Osmotic Pressure: Definition & Formula

15. Osmotic Pressure: Definition & Formula

This lesson will define osmotic pressure, provide the formula for calculating osmotic pressure, and show you how to solve problems using the formula. After the lesson, there will be a brief quiz so you can test what you've learned.

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

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Support