Ch 6: NES General Science: The Mole Concept

About This Chapter

As you prepare for the NES General Science exam, you can use this chapter to study for questions related to the concept of a mole and how it is used to assess the quantity of atoms in a sample.

NES General Science: The Mole Concept - Chapter Summary

This chapter is a review of the mole and how it is used to calculate the number of atoms in a sample, the volume of a sample and the mass of a sample. In these videos, our expert instructors discuss topics you may find on the National Evaluation Series (NES) General Science related to:

  • Using Avogadro's number and counting atoms
  • Understanding chemical reactions and balancing chemical equations
  • Explaining chemical reactions and how to balance chemical equations
  • Examining mole-to-mole ratios
  • Using stoichiometry calculations for relative quantities of gas and mass-to-mass calculations

These lesson videos are mobile-device friendly, so you have a versatile way of studying mole concepts. In addition to watching the videos, you can read over the lesson transcripts, which identify key vocabulary in bold print. After completing these lessons, test your understanding of the material presented by taking the lesson quizzes.

5 Lessons in Chapter 6: NES General Science: The Mole Concept
Test your knowledge with a 30-question chapter practice test
Avogadro's Number: Using the Mole to Count Atoms

1. Avogadro's Number: Using the Mole to Count Atoms

How do we move from the atomic world to the regular world? Because atoms are so tiny, how can we count and measure them? And what do chemists celebrate at 6:02 AM on October 23rd each year? In this lesson, you will be learning how Avogadro's number and the mole can answer these questions.

Chemical Reactions and Balancing Chemical Equations

2. Chemical Reactions and Balancing Chemical Equations

In this lesson, you'll learn how to balance a chemical reaction equation using the conservation of matter law. You'll also learn how to write both word and formula equations, what the subscripts after a letter mean and what the numbers in front of compounds mean.

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.

Stoichiometry: Calculating Relative Quantities in a Gas or Solution

4. Stoichiometry: Calculating Relative Quantities in a Gas or Solution

In this lesson, learn about molar volume and how to set up and make stoichiometric calculations with gases. Then learn about solution stoichiometry and how to make stoichiometric calculations with solutions.

Mass-to-Mass Stoichiometric Calculations

5. Mass-to-Mass Stoichiometric Calculations

Learn how to set up and make mole to mass, mass to mole and mass to mass stoichiometric calculations. Learn how the ratios of moles helps you compare and make calculations. Learn how to relate mole ratios to molar mass.

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