07 Notes - Classification of Matter

07 Notes - Classification of Matter - Can be broken down by...

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Pluchino – Regents Chemistry Matter and Measurement – 07 Classification of Matter Aim: How is matter classified? Do Now: Define “chemistry” in your own words. Chemistry: the study of matter, its properties, its composition, and its interactions with other matter and energy Matter: anything that has a mass and volume Atoms: the simplest forms of matter, the building blocks of all matter Pure Substances: materials that have a unique, defined set of chemical and physical properties Elements: substances composed of only one type of atom Elements can be monatomic (single atoms) or diatomic (two of the same atom). As long as all the atoms are the same, regardless of how many there are, the sample is considered an element. Cannot be broken down by chemical means! Compounds: substances that are composed of two or more different elements
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Unformatted text preview: Can be broken down by chemical means! Mixtures: two or more substances that have not combined chemically (only physically combined) Do not have a unique, defined set of chemical and physical properties Can be separated by physical means Homogeneous Mixtures: uniform throughout, no distinguishable parts (gaseous samples are always homogeneous) Heterogeneous Mixtures: not uniform throughout, has distinguishable parts. Practice: Classify each example of matter. a. Zinc ______ b. Copper wire ______ c. Brass (an alloy) ______ d. Oil & vinegar ______ e. Granite (an ore) ______ f. Water ______ g. Carbon dioxide ______ h. Diamond ______ i. Mix of oats and candy ______ j. Calcium chloride ______ k. Aluminum foil ______ Conclusions:...
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This note was uploaded on 01/01/2012 for the course CHEM 101 taught by Professor Donahue during the Spring '11 term at Long Island U..

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07 Notes - Classification of Matter - Can be broken down by...

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