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Chemistry

Chemistry. Semester 1 Review. Periodic Table. Writing formulas. List symbols and charges. Use subscripts to balance. Parentheses around polys!. Li +1. (SO 4 ) -2. 2. Li 2 (SO 4 ). Naming formulas. Monatomics end with -ide Add prefixes if two nonmetals Add Romans if transition metal.

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Chemistry

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  1. Chemistry Semester 1 Review

  2. Periodic Table

  3. Writing formulas • List symbols and charges. • Use subscripts to balance. • Parentheses around polys! Li+1 (SO4)-2 2 Li2(SO4)

  4. Naming formulas • Monatomics end with -ide • Add prefixes if two nonmetals • Add Romans if transition metal Ca(OH)2 Calcium Hydroxide

  5. Br2I2N2Cl2H2O2F2 • Seven diatomic elements. • Need a subscript 2 if by themselves! Ex. Oxygen gas Chlorine gas, etc.

  6. Factor label • FOLLOW the UNITS!! 24 years  hours 24 years 365 days 24 hours = 1 years 1 days hours

  7. Sig Digs! • Nonzeros COUNT • Sandwich rule 2002 • Leading zeros never count 0.00522 • Trailing zeroes count AFTER decimal 5.00 • Whole number zeroes count IF decimal shown 70. But Not 100

  8. Scientific notation #.## x104 decimal after 1st nonzero number Put in calculator, NEVER HIT “X” or “10”!!! USE “EE” or “EXP” key

  9. Practice 1) (6.02x1023)g / (2.75x1017mL) 2) (4.2x1012ft)*(1.00x102ft)

  10. Periodic Table • Find charge by moving to OCTET Group 1, 2,17,18

  11. Algebra • Arrow method • CIRCLE unknown • FLIP when crossing equal sign

  12. Con’t P1V1 T1 P2V2 T2 = T2 = P2V2T1 P1V1

  13. Polyatomic ions K.Y.I.!!!! Recognize Recall

  14. Balancing • Use subscripts to balance FORMULAS!! • Use coefficients to balance EQUATIONS!!

  15. Formulas • Write formulas for: • Sodium Fluoride • Copper (II) Nitrate (NO3-1) • Calcium Bromide • Aluminum Oxide • Ammonium Sulfate (NH4+1)(SO4-2)

  16. Reaction types • A + X  AX • AX  A + X • A + BX  AX + B • AX + BY  AY + BX • ___ + O2  H20 + CO2

  17. Reaction types • Complete and classify: • Oxygen reacts with propane(C3H8) • Sodium reacts with Magnesium Fluoride  c) __ KCl+ __ Li2S  __ LiCl + __ K2S

  18. The End • Finish your Semester 1 Checkpoint assignment • Quiz next week (Net ionic equations) • Test Ch.11 TEST Next week • Next WEEBLY Ch.11, 12, 13, 14 Go Vikings!!

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