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Covalent Compounds. Ionic vs. Covalent Compound . Ionic Compounds Between a metal and a non-metal Transfers electrons Covalent Compounds Between a non-metal and a non-metal Electrons are shared. Covalent Compound. Nitrogen = non-metal. Oxygen = non-metal. Covalent Compounds.
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Ionic vs. Covalent Compound • Ionic Compounds • Between a metal and a non-metal • Transfers electrons • Covalent Compounds • Between a non-metal and a non-metal • Electrons are shared
Covalent Compound Nitrogen = non-metal Oxygen = non-metal
Covalent Compounds Hydrogen = non-metal Carbon = non-metal • Look at the first element listed in the compound… notice that it is a NON-METAL • If both elements are non-metals, then it is a covalent bond. This means that rather than transferring electrons (like ionic compounds do), the two elements share their valence electrons
Naming Covalent Compounds Prefixes are used to indicate how many of each atom are in the compound. Prefixes are written in front of each element The prefixes listed in your data booklet, and are: Prefixes Prefixes 6 = hexa 7 = hepta 8 = octa 9 = nona 10 = deca • 1 = mono • 2 = di • 3 = tri • 4 = tetra • 5 = penta
Naming Example Oxygen = non-metal Carbon = non-metal Have 2 oxygens CO2 2 = di Name (in the order they appear) Carbon dioxide Change to “ide”
Naming Example Oxygen = non-metal Phosphorus = non-metal Have 10 oxygens P4O10 10 = deca Have 4 phosphorus’ 4 = tetra Name (in the order they appear) Tetraphosphorus decaoxide Change to “ide”
Formula Example C only have 1 S have 2 because it is “di” Carbon disulfide Formula (put them together in the order) CS2
Formula Example C have 2 (di) Cl have 4 (tetra) Dicarbon tetrachloride Formula (put them together in the order) C2Cl4