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Acid base ppt

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Acid base ppt

  1. 1. Acid and Base Chemistry Mattayomsuksa 4
  2. 2. vocabulary
  3. 3. arrhenius
  4. 4. aqueous
  5. 5. solution
  6. 6. slippery
  7. 7. neutral
  8. 8. structure
  9. 9. Comparative sentenceWe use the comparative to compare and contrast different objects.
  10. 10. One-syllable adjectives : Adj adding – er: low-lower, cool - cooler, tall – taller, warm –warmer, etc.For example - Lower pH value indicates a stronger acid. - Higher pH value indicates a stronger base.
  11. 11. Acid and Base
  12. 12. Arrhenius Acids and BasesAcids produce H+ in aqueous solutions water HCl H+(aq) + Cl- (aq))Bases produce OH- in aqueous solutions water NaOH Na+(aq) + OH- (aq)
  13. 13. AcidsProduce H+ (as H3O+) ions in waterProduce a negative ion (-) tooTaste sourCorrode metalsReact with bases to form salts and waterNeutral Substance : Water!
  14. 14. BasesProduce OH- ions in waterTaste bitter, chalkyAre electrolytesFeel soapy, slipperyReact with acids to form salts and waterNeutral Substance : Water!
  15. 15. What is the pH scale? • Acids have a ph from 0-7 • Lower pH value indicates a stronger acid. • Bases have a pH from 7-14 • Higher pH value indicates a stronger base.
  16. 16. Some Common AcidsNaOH sodium hydroxide (found in soap)HCl hydrochloric acidNaHCo3 sodium bicarbonate acidHNO3 nitric acid (found in sanitary ware cleaner)
  17. 17. A PH from 0-7 is Acid or Base ?What produce a negative ions ?What neutral substance ?
  18. 18. Listening quiz game
  19. 19. 1 2 3 4 5
  20. 20. NaOH , Base
  21. 21. HCL , Acid
  22. 22. Washing up , Base
  23. 23. HNO3 , Acid
  24. 24. NaHCo3 , Base
  25. 25. Acids and Base laboratory
  26. 26. instruction You have to do experiment of Acids andBase then write down transference andresult of lab. After that you have to presentlab result in front of the class.
  27. 27. How to do the experiment- Drop blue- pea juice 5 drops in lemon juice, orange juice, soap liquid, and detergent .- Observe transference of lab.- Write down the result of lab.
  28. 28. LAB result Solution Transference Result ( acid or base) Lemon juice+ blue- pea juice Soap liquid+ blue- pea juice Orange juice+ blue pea juiceSummary of experiment Detergent+ blue……………………………………………………………………………………………… pea juice………………………………………………………………………………………………………………………………………………………………………………………………

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