Ch 10: Modern Physics

About This Chapter

Review modern physics in preparation for the Physics Regents Exam. These video lessons address various atomic theories as well as quantum numbers and other physics topics.

Modern Physics - Chapter Summary

Do you remember the significance of Avogadro's number? Can you differentiate between atomic number and mass number? If not, you might benefit from completing this online chapter on modern physics. This series of brief video lessons also covers photons and the photoelectric effect, isotopes and average atomic mass, and electron configurations in atomic energy levels. Additional physics topics addressed in this chapter include the following:

  • The quantum mechanical nature of radiation and matter
  • Quantum properties of conductors, semiconductors and insulators
  • The dual nature of light
  • The standard model of particle physics
  • Early atomic theories of Dalton, Thomson, Rutherford and Millikan
  • The atom
  • Four quantum numbers: Principal, angular momentum, magnetic and spin

Our video lessons can help you review ahead of the New York State Physics Regents Exam. Developed by professional educators with experience in physics, these videos are comprehensive yet engaging. A transcript and self-assessment quiz are included in each lesson to round out the review process.

Physics Regents Exam Objectives

The New York State Regents Physics Exam features 85 questions divided among three sections. These questions are a mixture of multiple choice and written response. The Physics Regents Exam is one of four science exams you can choose from en route to earning your Regents Diploma, which is required to graduate from high school in New York.

10 Lessons in Chapter 10: Modern Physics
Test your knowledge with a 30-question chapter practice test
The Photoelectric Effect: Definition, History, Application & Equation

1. The Photoelectric Effect: Definition, History, Application & Equation

In this lesson, you will learn what the photoelectric effect is, how it was discovered, how it applies to everyday life, and the equation associated with it. A short quiz will follow.

Energy & Momentum of a Photon: Equation & Calculations

2. Energy & Momentum of a Photon: Equation & Calculations

After watching this lesson, you will be able to explain what wave-particle duality is, provide the equations for the energy and momentum of a photon of light, and use those equations to solve problems. A short quiz will follow.

Standard Model of Particle Physics

3. Standard Model of Particle Physics

After completing this lesson, you will be able to explain what the standard model of physics is, name the particles that are part of the standard model, and some of the things it can't currently explain. A short quiz will follow.

Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

4. Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

Imagine firing a bullet at a piece of tissue paper and having it bounce back at you! You would probably be just as surprised as Rutherford when he discovered the nucleus. In this lesson, we are going to travel back in time and discuss some of the major discoveries in the history of the atom.

The Atom

5. The Atom

Tune into this lesson to find out what matters about matter. What exactly is an atom? And, how do the atoms that make up the elements in the periodic table differ from one another?

Atomic Number and Mass Number

6. Atomic Number and Mass Number

Atoms are the basic building blocks of everything around you. In order to really understand how atoms combine to form molecules, it's necessary to be familiar with their structure. In this lesson, we'll dissect atoms so we can see just what really goes into those little building blocks of matter.

Isotopes and Average Atomic Mass

7. 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.

Avogadro's Number: Using the Mole to Count Atoms

8. 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.

Electron Configurations in Atomic Energy Levels

9. Electron Configurations in Atomic Energy Levels

This lesson will explain what the electrons are doing inside the atom. Tune in to find out how we specify where they are located and how this location description will help us predict an element's properties.

Four Quantum Numbers: Principal, Angular Momentum, Magnetic & Spin

10. Four Quantum Numbers: Principal, Angular Momentum, Magnetic & Spin

Each electron inside of an atom has its own 'address' that consists of four quantum numbers that communicate a great deal of information about that electron. In this lesson, we will be defining each quantum number and explaining how to write a set of quantum numbers for a specific electron.

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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