About This Chapter
How It Works:
- Identify the lessons in the Holt Science Spectrum - Physical Science Atoms & the Periodic Table chapter with which you need help.
- Find the corresponding video lessons with this companion course chapter.
- Watch fun videos that cover the atom and periodic table topics you need to learn or review.
- Complete the quizzes to test your understanding.
- If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.
Students will learn:
- What atoms are
- Atomic and mass numbers
- Properties of groups and periods on the periodic table
- Alkali metals and alkaline earths
- Group 3A, 4A and 5A elements
- Chalcogens, halogens and noble gases
- Avogadro's number
- Conversion factors
- Converting between mass and amount
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1. What is An Atom? - Definition & Examples
After watching this video, you will be able to explain what an atom is, how it is structured, what they are made from, and give some examples of elements. A short quiz will follow.
2. 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.
3. 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.
4. Alkali Metals (Group 1A Elements): Definition & Properties
Elements that can explode when put into water? Metals that can be cut with a knife? These are just some of the properties alkali metals share. This video will describe more properties and give some uses of these interesting metals.
5. Alkaline Earths (Group 2A Elements): Definition & Properties
Alkaline earth metals can be found running through your blood... and in nuclear fallout! This lesson will examine properties they share and look at how they impact your health.
6. Group 3A Elements: Definition & Properties
The Group 3A elements don't have a whole lot in common, so we'll examine their unique characteristics in addition to their similarities. This video will explore the properties and uses of elements in this group.
7. Group 4A Elements: Definition & Properties
From computer chips to diamonds, you can find some of the group 4A elements everywhere you look! This lesson will examine properties group 4A shares and will list some of the uses of these elements.
8. Group 5A Elements: Definition & Properties
The group 5A elements aren't as recognizable as other elements on the periodic table, but they are important nonetheless. This lesson will examine properties they share and will give some examples of why this group is so important.
9. Chalcogens (Group 6A Elements): Definition & Properties
Some can kill you, some are useful, and one is vital to your survival. Welcome to the chalcogens! This lesson will list common properties, and will then share some uses and characteristics of these diverse Group 6A elements.
10. Halogens (Group 7A Elements): Definition & Properties
The halogens are a group of non-metals that share several properties. This lesson will examine these properties and will also look at the many uses of these group 7A elements.
11. Noble Gases (Group 8A Elements): Definition & Properties
The noble gases are an inert group of elements with some fun and fascinating uses. This lesson will explore the properties that the noble gases share and will look at some of their uses.
12. What Is a Semiconductor? - Devices, Properties & Fundamentals
Microchips used in computer systems use a very thin sheet of silicon dioxide with microscopic electronic circuitry. Silicon is a semiconductor material, which means the material can be altered to either conduct an electrical current or not.
13. 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.
14. Conversion Factor in Chemistry: Definition, Formula & Practice Problems
After finishing this lesson, you will be able to define and describe conversion factors and explain how to use conversion factors to convert units in chemistry problems.
15. Converting Between Mass & Amount
In this lesson, we will learn how to convert the mass of atoms or molecules to the number of atoms or molecules and then go in reverse. We will learn about moles and Avogadro's number.
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Other chapters within the Holt Science Spectrum - Physical Science: Online Textbook Help course
- Holt Physical Science Chapter 1: Introduction to Science
- Holt Physical Science Chapter 2: Matter
- Holt Physical Science Chapter 3: States of Matter & Energy
- Holt Physical Science Chapter 5: The Structure of Matter
- Holt Physical Science Chapter 6: Chemical Reactions
- Holt Physical Science Chapter 7: Solutions
- Holt Physical Science Chapter 8: Acids, Bases & Salts
- Holt Physical Science Chapter 9: Nuclear Changes
- Holt Physical Science Chapter 10: Motion
- Holt Physical Science Chapter 11: Forces
- Holt Physical Science Chapter 12: Work & Energy
- Holt Physical Science Chapter 13: Heat & Temperature
- Holt Physical Science Chapter 14: Waves
- Holt Physical Science Chapter 15: Sound & Light
- Holt Physical Science Chapter 16: Electricity
- Holt Physical Science Chapter 17: Magnetism
- Holt Physical Science Chapter 18: Communication Technology
- Holt Physical Science Chapter 19: The Solar System
- Holt Physical Science Chapter 20: The Universe
- Holt Physical Science Chapter 21: Planet Earth
- Holt Physical Science Chapter 22: The Atmosphere
- Holt Physical Science Chapter 23: Using Natural Resources