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Acids & Bases

Acids & Bases. Our Goals for today. To determine the difference between Acids & Bases Discuss the importance of studying Acids & Bases Perform an experiment dealing with Acids & Bases. What is the pH scale?. The pH scale measures how acidic or basic a solution is. The pH scale.

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Acids & Bases

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  1. Acids & Bases IQRA MODEL SCHOOL, TANDUR.

  2. Our Goals for today • To determine the difference between Acids & Bases • Discuss the importance of studying Acids & Bases • Perform an experiment dealing with Acids & Bases IQRA MODEL SCHOOL, TANDUR.

  3. What is the pH scale? • The pH scale measures how acidic or basica solution is. IQRA MODEL SCHOOL, TANDUR.

  4. The pH scale • The pH scale is the concentration of hydrogen ions in a given substance. IQRA MODEL SCHOOL, TANDUR.

  5. Identifying Acids and Bases • 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. IQRA MODEL SCHOOL, TANDUR.

  6. Definitions of Acids and Bases • An acid is a substance that breaks into ions in an aqueous solution. • A Base (alkaline) is a substance that breaks into ions in an aqueous solution. • Note: aqueous solution is any solution where is the solvent. IQRA MODEL SCHOOL, TANDUR.

  7. Did we Miss something?? • What happens when the pH of a substance is 7? • Ans: A pH level of 7 indicates a Neutral Substance i.e: Water! IQRA MODEL SCHOOL, TANDUR.

  8. Test Your Knowledge • What is the range of an ACID on the pH scale? Ans: 0-7 • What is the range of a BASE and what is another name for a BASE? Ans: 7-14, Alkaline IQRA MODEL SCHOOL, TANDUR.

  9. Characteristics Of Acids Acids can be characterized by: • A sour taste. • It turns blue litmus paper red • It tastes sour. Try drinking lemon juice (citric acid) IQRA MODEL SCHOOL, TANDUR.

  10. Characteristics of Bases A Base is characterized by: • A bitter taste. (Milk of Magnesia) • It feels slippery. (Soapy Water) • It turns Red Litmus Blue. IQRA MODEL SCHOOL, TANDUR.

  11. Why Learn about Acids & Bases? • What do you think is the pH level of tap water? • The pH of a swimming pool must be checked periodically. Why? • Is it important for Lakes & Rivers to maintain a certain pH? IQRA MODEL SCHOOL, TANDUR.

  12. Today’s Experiment • Test the pH of Pepsi, tap water, and drain cleaner • GOOD LUCK!!! IQRA MODEL SCHOOL, TANDUR.

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