Acid base ppt

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  • 1. Acid and Base Chemistry Mattayomsuksa 4
  • 2. vocabulary
  • 3. arrhenius
  • 4. aqueous
  • 5. solution
  • 6. slippery
  • 7. neutral
  • 8. structure
  • 9. Comparative sentenceWe use the comparative to compare and contrast different objects.
  • 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. Acid and Base
  • 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. 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. 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. 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. Some Common AcidsNaOH sodium hydroxide (found in soap)HCl hydrochloric acidNaHCo3 sodium bicarbonate acidHNO3 nitric acid (found in sanitary ware cleaner)
  • 17. A PH from 0-7 is Acid or Base ?What produce a negative ions ?What neutral substance ?
  • 18. Listening quiz game
  • 19. 1 2 3 4 5
  • 20. NaOH , Base
  • 21. HCL , Acid
  • 22. Washing up , Base
  • 23. HNO3 , Acid
  • 24. NaHCo3 , Base
  • 25. Acids and Base laboratory
  • 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. 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. 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………………………………………………………………………………………………………………………………………………………………………………………………