Classifying Matter. A. Pure Substances 1.Elements (Atoms) – Substances that cannot be broken down. A)H – Hydrogen B)O – Oxygen C)Mg – Magnesium 2.Compounds.

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Presentation transcript:

Classifying Matter

A. Pure Substances 1.Elements (Atoms) – Substances that cannot be broken down. A)H – Hydrogen B)O – Oxygen C)Mg – Magnesium 2.Compounds (Molecules) – A combination of two or more elements. Are chemically combined and cannot be physically separated. Each element loses its properties & gains new ones as the compound A)Water (H 2 O) B)Glucose (C 6 H 12 O 6 ) C)Carbon Dioxide (CO 2 )

B. Mixtures: Not Chemically Combined (Each part of the mixture keeps its own identity) 1.Heterogeneous – two or more substances mixed together and you can see that they are separate. a)Granite b)Sand c)Oil and Vinegar

2. Homogeneous – solution – a well-mixed mixture (you can’t see the different items) a) Air b) Sea Water c) Sugar Water The End