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Catalyst

Catalyst. Solve to the correct number of sig. figs.: (56.89)(2.1)(0.54674) = 2. Convert 52 ft to cm (12 in = 1 ft , 1 in = 2.54 cm) 3. Convert 52 km to nm. Express in scientific notation!. Every Compound Is Unique!. Lecture 0.3 – Naming Inorganic Compounds.

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Catalyst

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  1. Catalyst • Solve to the correct number of sig. figs.: (56.89)(2.1)(0.54674) = 2. Convert 52 ft to cm (12 in = 1 ft, 1 in = 2.54 cm) 3. Convert 52 km to nm. Express in scientific notation!

  2. Every Compound Is Unique!

  3. Lecture 0.3 – Naming Inorganic Compounds

  4. Names and Formulas of Ionic Compounds: Anions • The names of elements that are anions are formed by adding –ideto the end of the name • Cl- = Chloride ion • Br- = Bromide ion • O2- = Oxide ion

  5. Names and Formulas of Ionic Compounds: Anions 2. Polyatomic ions that contain oxygen have names ending in either –ate or –ite -ate ending polyatomic have more oxygens than –ite ones!

  6. Names and Formulas of Ionic Compounds: Anions 2. Sometimes oxygen binds to the same ion with increasing amount of oxygens. These come in 4’s and the pattern is always: • Per_____ate = 4 oxygens • _______ate = 3 oxygens • _______ite = 2 oxygens • Hypo______ite = 1 oxygen • Example: • ClO4- = Perchlorate, ClO3-= Chlorate, ClO2- = Chlorite, ClO- = Hypochlorite

  7. Names and Formulas of Ionic Compounds: Anions 3. Anions created by adding H+ to an anions that has oxygen has the prefix of hydrogen or dihydrogen based on the number of H+.

  8. Naming Ionic Compounds • To name ionic compounds, you always name the cation and then the anion.

  9. Names and Formulas for Acids • Acids are named differently than other compounds • Two rules when naming acids: • Acids containing anions that are only single elements are named by changing the –ide prefix on the anion to –ic and adding hydro in front of the anion. Add acid at the end. • E.g. HCl is hydrochloric acid • Acids containing polyatomic ions are named by changing –ate to –ic and –ite to –ouson the anion and then adding acid at the end

  10. Naming Covalent Molecules (Non-Acids) • The process for naming covalent inorganic compounds requires the following rules: 1. Name the first compound with a Greek prefix to indicate the number of atoms. 2. Name the second compound adding –ide to the end and a Greek prefix to indicate number of atoms. Greek Prefixes

  11. Class Example • CaCl2 • Ba(OH)2 • SiBr4 • Hydrobromic Acid

  12. Table Talk • HCl • K2SO4 • Disulfur dichloride • Cobalt (II) Nitrate

  13. Naming Practice • You may use the next 15 minutes to either: 1. Practice naming compound using the worksheet. 2. Memorize all the polyatomic ions. 3. Study other important content in chapters 1 and 2.

  14. Quiz

  15. Lab 0 • You will be working in groups of 2. • You will measure the density of one known substance, unknown A, and unknown B. • Remember: • Lab notebooks will be checked for accuracy!

  16. Closing Time • Turn in lab notebooks before you leave. Make sure questions have been answered thoroughly. • Read Chapter 1 of Cracking the AP Chemistry Exam for Monday/Tuesday. COME WITH QUESTIONS!

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