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Chemistry

Acids and Bases

This lesson introduces the properties of acids and bases, including the various theories that define them. It also covers acid-base reactions and the pH scale. Nature of Acids and Bases Acids are compounds that contain at least one hydrogen atom or proton (H+), which, when dissolved in water, can form a hydronium ion (H3O+). Acids …

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Chemical Solutions

This lesson discusses the properties of different types of mixtures, focusing on solutions. Then, it examines aspects of chemical reactions, including the components of the reactions and the types of changes that occur. Solutions When elements and compounds are physically (not chemically) combined, they form a mixture. When the substances mix evenly and it is …

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Chemical Bonds

This lesson introduces bonding and explains the three ways in which atoms can become stable. The rest of the lesson examines different types of bonds in more detail. Introduction to Bonding Chemical elements found in the periodic table have different levels of reactivity. The number of valence electrons in an atom is the most important …

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Properties of Matter

This lesson introduces the properties of matter, which are fundamental to the understanding of chemistry. Matter and Its Properties Aluminum, clothing, water, air, and glass are all different kinds of matter. Matter is anything that takes up space and has mass. A golf ball contains more matter than a table-tennis ball. The golf ball has …

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