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Classifying Matter (Red Notes). A. Pure Substances. 1. Elements (Atoms) – Substances that cannot be broken down. A) H – Hydrogen B) O – Oxygen C) Mg – Magnesium
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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. A) Water (H2O) B) Glucose (C6H12O6) C) Carbon Dioxide (CO2)
B. Mixtures: Not Chemically Combined 1. Heterogeneous – two or more substances mixed together and you can see that they are separate. a) Granite b) Sand c) Oil and Vinegar
The End • Homogeneous – solution – a well-mixed mixture (you can’t see the different items) • Air • Sea Water • Sugar Water