About This Chapter
TExES Chemistry: Properties of Gases - Chapter Summary
The lessons comprising this chapter are designed to introduce you to or provide a review of various chemical laws regarding gases that will help you answer relevant questions on the TExES Chemistry 7-12 exam. You will focus on such topics as gas density, pressure, volume and temperature. After viewing the lessons and taking the accompanying quizzes, you should feel comfortable in doing the following:
- Understanding the model of the kinetic molecular theory
- Explaining the ways of measuring the pressure of gases
- Applying the equation for finding the density of a gas
- Calculating total and partial pressures
- Describing the Maxwell-Boltzmann distribution
- Defining terms used to describe the motion of gas particles
- Providing details about various chemistry laws pertaining to gases, such as Charles' Law, Boyle's Law, the Ideal Gas Law and Avogadro's Law
- Describing the behavior of gases under adverse conditions
You will find the topics are discussed in simple and straightforward language, and there are illustrations to support the text. Self-assessment quizzes at the end of each lesson are in multiple-choice format, just as you will encounter on the actual TExES Chemistry exam.
TExES Chemistry: Properties of Gases Objectives
By utilizing the lessons in the Properties of Gases chapter, you can enhance your knowledge of the laws you will be tested on when taking the TExES Chemistry 7-12 exam and help ensure your proficiency in this subject matter. You will encounter questions regarding gases in one of the competency areas of the second domain of the exam, which accounts for 41% of the entire test. In all, the computer-based test has 100 multiple-choice questions.
TExES exams are used in the state of Texas to assess a teacher's comprehension of specific content areas as they pursue certification in the field. General and core subject exams are provided, as are many in such areas as art, music, computer science, dance and journalism. A minimum score of 240 is required to pass TExES exams.
1. The Kinetic Molecular Theory: Properties of Gases
What makes a gas ideal? What types of characteristics do ideal gases have? In this lesson, we will discuss the many characteristics of gases and how knowing the microscopic properties of gas particles will help you understand the macroscopic properties of a gas.
2. Pressure: Definition, Units, and Conversions
Have you ever wondered what pressure is and how it gets measured? In this lesson, we are going to define pressure and explain some of the units that are used to express measurements of pressure.
3. How to Find the Density of a Gas
The density of gas is more complicated than solids because gases are highly affected by temperature and pressure. This lesson will lead you through two equations to calculate the density of a gas.
4. Dalton's Law of Partial Pressures: Calculating Partial & Total Pressures
In this lesson, you will learn how gases behave when they are mixed together and how to use Dalton's law of partial pressures to calculate partial and total pressures of gases. You will also learn how to use this information to explain how to find the partial pressure of a gas collected over water.
5. The Boltzmann Distribution: Temperature and Kinetic Energy of Gases
Gas particles are always moving around at random speeds and in random directions. This makes it difficult to determine what any one particle is doing at a given time. Luckily, the Maxwell-Boltzmann distribution provides some help with this.
6. Diffusion and Effusion: Graham's Law
Have you ever been in a room where someone has put on perfume or scented lotion and a few minutes later you are able to smell it? What causes you to be able to smell something from so far away? In this lesson, we are going to use the kinetic molecular theory of gases to explain some of their behaviors and determine how we can compare the speeds of different gases.
7. Molar Volume: Using Avogadro's Law to Calculate the Quantity or Volume of a Gas
Have you ever wondered why a balloon expands when you blow it up? How something as light as air is able to exert a force large enough to inflate a balloon? In this lesson, you will learn about the relationship between the volume of a container filled with a gas and the number of gas particles that container holds. This relationship is known as Avogadro's Law.
8. Boyle's Law: Gas Pressure and Volume Relationship
Have you ever wondered how an air powered water gun works? It uses the fantastic properties of gases to make a summer day more enjoyable! In this lesson, we will be discussing Boyle's Law and the relationship between pressure and volume of a gas.
9. Charles' Law: Gas Volume and Temperature Relationship
In this lesson, we will discover why the wind blows and what causes a hot air balloon to rise, a couple of the applications of Charles' Law that explain the relationship between the volume and temperature of a gas.
10. Gay-Lussac's Law: Gas Pressure and Temperature Relationship
You may know that you aren't supposed to put an aerosol can in a fire because it could explode, but do you know why? In this lesson, we will explain Gay-Lussac's law, which shows the relationship between the temperature and pressure of a gas.
11. The Ideal Gas Law and the Gas Constant
Have you ever wondered why the pressure in your car's tires is higher after you have been driving a while? In this lesson, we are going to discuss the law that governs ideal gases and is used to predict the behavior of real gases: the ideal gas law.
12. Real Gases: Deviation From the Ideal Gas Laws
The ideal gas law is used to describe the behavior of ideal gases, but sometimes the conditions are such that gases behave differently. When this is the case we can use the van der Waals equation to describe the behavior of real gases under these non-ideal conditions.
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Other chapters within the TExES Chemistry 7-12 (240): Practice & Study Guide course
- TExES Chemistry: Equipment, Safety & Measurements
- TExES Chemistry: Scientific Inquiry & Processes
- TExES Chemistry: Matter
- TExES Chemistry: Atomic Structure & Characteristics
- TExES Chemistry: Properties of Ionic & Covalent Bonds
- TExES Chemistry: Chemical Notation & Equations
- TExES Chemistry: Types & Proprieties of Solutions
- TExES Chemistry: Energy & Thermodynamics
- TExES Chemistry: Chemical Kinetics
- TExES Chemistry: Acids, Bases & Chemical Reactions
- TExES Chemistry: Equilibrium
- TExES Chemistry: Nuclear Chemistry
- TExES Chemistry: Teaching & Assessing Scientific Inquiry
- TExES Chemistry 7-12 Flashcards