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Ch 1: HiSET: Atoms, Elements & the Periodic Table

About This Chapter

Study information on atoms, elements and the periodic table as you get ready for the HiSET Science exam. Practice quizzes cover different states of matter, atomic and mass numbers and elements to assess your preparedness.

HiSET: Atoms, Elements & the Periodic Table - Chapter Summary

Learn how to read the periodic table and discover what an element is through the lessons presented in this chapter. Watch the included video lessons to get a clearer picture of some topics that you may encounter on the science portion of the HiSET exam. Information included in this chapter's lessons includes the following:

  • Physical and chemical properties of matter
  • The different states of matter
  • Mass and atomic numbers
  • Elements
  • Isotopes
  • The periodic table

Review this chapter's effective lessons to develop a solid comprehension of matter, elements and atomic theory. After viewing the featured video components, you can use the text lessons and self-assessment quizzes to further reinforce your understanding.

HiSET: Atoms, Elements & the Periodic Table Objectives

The HiSET Science subtest assesses application of content knowledge and how well one can interpret information. The science subtest consists of 50 questions that are multiple choice, and test takers are allotted a total of 80 minutes for the section. This chapter provides coverage of the material related to atoms, elements and the periodic table that appears on the exam. The lessons in this chapter have some objectives such as:

  • Understand the different properties of matter
  • List and describe the states of matter
  • Understand how to interpret the periodic table
  • Correctly identify atomic number and mass number

6 Lessons in Chapter 1: HiSET: Atoms, Elements & the Periodic Table
Matter: Physical and Chemical Properties

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.

States of Matter: Solids, Liquids, Gases, & Plasma

2. States of Matter: Solids, Liquids, Gases, & Plasma

Learn the four states of matter in the universe: solid, liquid, gas and plasma. Learn about the differences in shape and volume among the four states, which of the states is the most common and why plasma conducts electricity.

Atomic Number and Mass Number

3. 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.

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.

Isotopes and Average Atomic Mass

5. 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.

The Periodic Table: Properties of Groups and Periods

6. The Periodic Table: Properties of Groups and Periods

How is the periodic table like the map you used on your last road trip? In this lesson, you will be introduced to the periodic table, the road map of chemists. We will discuss how the elements are organized and how you can use this organization to identify some of their major physical properties.

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