About This Chapter
Intro to Matter - Chapter Summary
This introduction to matter can help you gain greater insight into the kinetic theory of matter, relationships between elements, molecules and compounds and much more. By exploring our engaging lessons, you will be ready to do the following in a short amount of time:
- Define and describe the atom
- Explain how to create mixtures by combining elements and compounds
- Compare the properties of solutions, suspensions and colloids
- Detail the physical and chemical properties of matter
- Discuss the states of matter and explain chemical vs. physical changes to matter
- Exhibit knowledge of heating curves and phase changes
The lessons in this chapter are available as engaging videos that average eight minutes each and full transcripts you can print to take additional notes. Feel free to use one or both lesson formats to study matter your way. If you hit a snag during your review of the lessons or need to clarify specific details, don't hesitate to submit your questions to our experts. When you're ready, assess your knowledge of the lessons by taking our multiple-choice quizzes and practice exam.
1. 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?
2. Understanding the Relationships between Elements, Molecules & Compounds
Everything on Earth is made of atoms, and sometimes they combine to form new groups of atoms. The sky is the limit when it comes to these combinations, which account for the vast number of things we find in our natural world.
3. Creating Mixtures by Combining Elements & Compounds
Do you really know what's in your tap water? It's not just water - it's a mixture of many different things. In fact, most things are mixtures of different elements and compounds that are physically joined together.
4. Comparing Solutions, Suspensions & Colloids: Properties & Examples
With a few simple observations, you can classify a mixture as a solution, suspension or colloid. Learn how we use properties, such as visibility of particles, how light is affected and the ability of particles to settle out to classify mixtures.
5. 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.
6. The Kinetic Theory of Matter: Definition & The Four States of Matter
Everything on Earth is made of matter, but that matter isn't always the same. Matter can exist in four different phases, and the kinetic theory of matter helps us understand the differences between those phases.
7. 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.
8. Phase Changes and Heating Curves
Learn the phases - gas, liquid, solid and plasma. Learn what a phase diagram is and what terms describe the movement between phases: melting, sublimating, freezing, vaporization, condensation, and deposition. Discover why heating curves have plateaus, what a phase transition is, and what happens during this transition.
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