Acid base ppt
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This document discusses acids and bases. It defines them according to Arrhenius' theory as substances that produce H+ ions (acids) or OH- ions (bases) when dissolved in water. Acids have a pH below 7 and taste sour, while bases have a pH above 7 and taste bitter. Examples of common acids and bases are provided, along with their properties. The document also introduces the pH scale and explains how pH values indicate acid strength. Finally, it describes an experiment to test solutions and identify them as acids or bases using blue-colored juice that changes color in their presence.
Acid base ppt
- 1. Acid and Base Chemistry Mattayomsuksa 4
- 3. vocabulary
- 4. arrhenius
- 5. aqueous
- 6. solution
- 7. slippery
- 8. neutral
- 9. structure
- 10. Comparative sentence We use the comparative to compare and contrast different objects.
- 11. 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.
- 12. Acid and Base
- 13. 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)
- 14. 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!
- 15. 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!
- 16. 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.
- 17. Some Common Acids NaOH sodium hydroxide (found in soap) HCl hydrochloric acid NaHCo3 sodium bicarbonate acid HNO3 nitric acid (found in sanitary ware cleaner)
- 18. A PH from 0-7 is Acid or Base ? What produce a negative ions ? What neutral substance ?
- 20. 1 2 3 4 5
- 21. NaOH , Base
- 22. HCL , Acid
- 23. Washing up , Base
- 24. HNO3 , Acid
- 25. NaHCo3 , Base
- 26. Acids and Base laboratory
- 27. instruction You have to do experiment of Acids and Base then write down transference and result of lab. After that you have to present lab result in front of the class.
- 28. 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.
- 29. LAB result Solution Transference Result ( acid or base) Lemon juice+ blue- pea juice Soap liquid+ blue- pea juice Orange juice+ blue pea juice Summary of experiment Detergent+ blue ……………………………………………………………………………………………… pea juice ……………………………………………………………………………………………… ………………………………………………………………………………………………