Lesson Category: Basic Chemistry

The Nature and Properties of Matter

At its core, chemistry is the science that describes the properties and changes of matter.  Matter is everything in the universe that has mass, and takes up space.  Although some matter can consist of only subatomic particles, anything that you can touch is made entirely of atoms.  The structure of atoms is what determines how …

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Chemistry Basics: SI units

SI units The metric system is a set of standardized weights and measures that have been widely adopted across the world because of its methodical naming system that divides measurements into units of ten.  The modern form of the metric system is called the Systéme International (International System) or SI for short.  Science has adopted …

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