About This Chapter
Praxis General Science: Matter - Chapter Summary
This chapter can help you prepare for matter questions on the Praxis General Science exam by providing information on the physical and chemical properties of matter and early theory. The lessons are taught by our professional instructors and can improve your ability to do the following:
- Explain the Bohr model and atomic spectra
- Identify atomic and mass numbers
- Explore electron configurations in atomic energy levels
- Detail fusion, fission, carbon dating, tracers and imaging
- Discuss the physical and chemical states of matter
- Define radioactive isotopes and radioactive decay
For a text-based review of the material presented in the videos, you can also read the lesson transcripts. To test your retention, take the lesson quizzes. Questions about matter can be submitted to our experts via the dashboard.
1. Matter: Physical and Chemical Properties
How are substances identified? There are two major ways we can describe a substance: physical properties and chemical properties. Learn about how chemists use properties to classify matter as either a mixture or a pure substance.
2. States of Matter and Chemical Versus Physical Changes to Matter
The world around us is constantly changing. Chemists put those changes into two main categories: physical changes and chemical changes. This lesson will define and provide examples of each.
3. 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.
4. The Bohr Model and Atomic Spectra
Do you ever wonder where light comes from or how it is produced? In this lesson, we are going to use our knowledge of the electron configurations and quantum numbers to see what goes on during the creation of light.
5. 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.
6. 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.
7. Radioactive Isotope: Definition & Uses
There are over 1,000 known radioactive isotopes of elements in the periodic table. There are many applications of radioactive isotopes in various fields. In this lesson, we will learn all about radioactive isotopes and their uses.
8. Radioactive Decay: Definition, Formula & Types
In this lesson, we'll discuss radioactive decay and learn the terms parent nucleus, daughter nucleus, and half-life. We'll also examine three types of radioactive decay.
9. Fusion, Fission, Carbon Dating, Tracers & Imaging: Applications of Nuclear Chemistry
What can the sun do that we can't? How do carbon atoms 'date'? Are radioactive isotopes helpful in the medical field? The answers to these questions can be found in this lesson on the applications of nuclear chemistry.
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Other chapters within the Praxis General Science (5435): Practice & Study Guide course
- Praxis General Science: Methodology, Techniques & History
- Praxis General Science: Thermodynamics
- Praxis General Science: Periodicity
- Praxis General Science: States of Matter
- Praxis General Science: Bonding & Structure
- Praxis General Science: Chemical Reactions
- Praxis General Science: Acid-Base Chemistry
- Praxis General Science: Solutions & Solubility
- Praxis General Science: Mechanics
- Praxis General Science: Motion & Forces
- Praxis General Science: Magnetism & Electricity
- Praxis General Science: Optics & Waves
- Praxis General Science: Basic Structure & Functions of Cells
- Praxis General Science: Cell Reproduction & Division
- Praxis General Science: Basic Biochemistry of Life
- Praxis General Science: Basic Genetics
- Praxis General Science: Theory & Key Mechanisms of Evolution
- Praxis General Science: Hierarchical Classification Scheme
- Praxis General Science: Plant Structures & Functions
- Praxis General Science: Basic Anatomy & Physiology
- Praxis General Science: Key Aspects of Ecology
- Praxis General Science: Physical Geology
- Praxis General Science: Historical Geology
- Praxis General Science: Earth's Bodies of Water
- Praxis General Science: Meteorology & Climate
- Praxis General Science: Astronomy
- Praxis General Science: Science, Technology & Society
- Praxis General Science Flashcards