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Substances in Chemistry

Learn about the classification of substances as elements or compounds and how they can be distinguished and identified through chemical means. Explore the properties and characteristics of various elements and compounds with examples. Discover the significance of chemical symbols and the origins of element names.

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Substances in Chemistry

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  1. Chapter 2 Section 3 -Substances can be classified as either elements or compounds element- the simplest form of matter that can exist under normal conditions -cannot be separated into simpler substances *look at periodic table

  2. -Two or more elements can combine chemically with one another to form a: compound- substance that can be separated into two or more substances only by chemical means *CO2, H20 -look at page 36 figure 2.6 -Sample Problem 2-2, #13 page 39

  3. -There are over 100 known elements chemical symbol- one or two letter representation of an element -first letter is always capitalized -second letter, if used, is lower case -many are derived from Latin or Greek names for the elements

  4. Elements to Know silver bismuth cobalt aluminum bromine fluorine argon carbon francium arsenic calcium gallium astatine cadmium germanium gold chlorine helium boron cesium hydrogen barium copper iodine beryllium chromium iron

  5. krypton phosphorus tin lead platinum titanium lithium potassium tungsten magnesium radium xenon manganese radon zinc mercury selenium scandium neon silicon vanadium nickel sodium zirconium nitrogen strontium tellurium oxygen sulfur uranium rubidium antimony

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