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REVIEW: WRITING AND NAMING COMPOUNDS, BALANCING EQUATIONS, ELEMENT SYMBOLS

REVIEW: WRITING AND NAMING COMPOUNDS, BALANCING EQUATIONS, ELEMENT SYMBOLS. Ionic, covalent, or acid ?. Copper (II) hydroxide Ionic HCl Acid Dinitrogen pentoxide Covalent Sodium chloride Ionic. H 2 SO 4 Acid Calcium hydroxide Ionic Carbon dioxide Covalent P 2 S 5 Covalent

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REVIEW: WRITING AND NAMING COMPOUNDS, BALANCING EQUATIONS, ELEMENT SYMBOLS

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  1. REVIEW:WRITING AND NAMING COMPOUNDS, BALANCING EQUATIONS, ELEMENT SYMBOLS

  2. Ionic, covalent, or acid? • Copper (II) hydroxide • Ionic • HCl • Acid • Dinitrogen pentoxide • Covalent • Sodium chloride • Ionic

  3. H2SO4 • Acid • Calcium hydroxide • Ionic • Carbon dioxide • Covalent • P2S5 • Covalent • Silver iodide • Ionic

  4. Name the element • Pb • Lead • Ca • Calcium • F • Fluorine • Hg • Mercury

  5. Au • Gold • Cu • Copper • Mg • Magnesium • Mn • Manganese • Fe • Iron

  6. When writing the formula for an ionic compound, the _____ is always written first. • Cation (metal) • Metals always ___ ____ electrons. • Give away • What is the ionic symbol for lithium? • Li+1 • What is the ionic symbol for sulfur? • S-2 • What is the ionic symbol for hydroxide? • OH-1 • What is the ionic symbol for ammonium? • NH4+1

  7. Covalent compounds are always between 2 _____. • Nonmetals • Naming covalent compounds includes using ___ before the element name. • Prefixes • What is the prefix for 1? • Mono • What is the prefix for 8? • Octa • What is the prefix for 5? 3? • Penta, tri

  8. Practice writing the formulas • Calcium sulfate • Ca+2 So4-2 = CaSO4 • Potassium phosphate • K+1 PO4-3 =K3PO4 • Iron (II) chloride • Fe+2 Cl-1 =FeCl2 • lead (IV) hydroxide • Pb+4 OH-1 = Pb(OH)4 • Remember, the Roman numeral tells you the positive charge for the metal!

  9. Potassium chloride • K+1 Cl-1 = KCl • Magnesium fluoride • Mg+2 F-1 = MgF2 • Ammonium oxide • NH4+1 O-2 = (NH4)2O

  10. Name the compound • S2O4 • Disulfur tetroxide • MgI2 • Magnesium iodide • AlBr3 • Aluminum bromide • CrCl3 • Chromium (III) chloride • NaOH • Sodium hydroxide • CaSO4 • Calcium sulfate

  11. Balancing equations • The law of conservation of mass and matter says matter cannot be created or destroyed! • All chemical equations must, therefore, be balanced! • Look at this formula: Pb(OH)4 • There are ____ lead atoms, ____ oxygen atoms and ____ hydrogen atoms • 1, 4,4 • The formula Fe2(SO4)3 contains ____ Fe atoms, ___ S atoms and ___ O atoms • 2, 3, 12

  12. Now balance the following! • ___ H2 + ___ O2→ ___ H2O • 2,1,2 • ___ N2 +___ H2 → ___ NH3 • 1,3,2 • ____Zn + ____ HCl → ___ ZnCl2 + ___ H2 • 1,2,1,1 • ___ Fe + ___ O2→ ___ Fe2O3 • 4,3,2

  13. THAT’S ALL FOR THE REVIEW!! • AS ALWAYS, COME SEE ME IF YOU NEED SOME EXTRA HELP!!

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