LESSON 3 Classification of Matter.
- Understanding matter begins with how we name it. We can divide matter into two types: homogeneous and heterogeneous.
- Homogeneous -- consists of only one visible component.
- distilled water, oxygen and graphite
- Heterogeneous -- contain more than one visible component.
- chocolate chip cookies, granite
PURE SUBSTANCES
- There are two types
- Elements: cannot be broken down into simpler substances by chemical reactions
- Iron, oxygen, magnesium
- Compounds: made up of two or more elements and can be changed into elements or other compounds by other reactions
- Water, sugar
SOLUTION
- A solution is a homoegeneous mixture of two or more substances
- solutions usually involve liquids but don't have to (fog, steel)
- The component present in greater amounts is the solvent.
- water is the most common solvent
- the symbol (aq) is used when something is dissolved in water
- Component present in smaller amount is the solute.
09.17.2010
posted by chemistry11 @ 4:30 PM
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