2. Properties of Acids and Bases Acids Bases *Taste sour*Taste Bitter *Turns blue litmus paper red*Turns red litmus paper blue *Reacts with metals*Produces Hydroxide ions (OH -) in water *Produces Hydrogen ions (H +) in water*Feels Slippery *Reacts with carbonates to produce CO 2 gas *Conducts electricity when dissolved in water *Doesn’t react with carbonates *Conducts electricity when dissolved in water

3. Acid, Base, Neutral, or Both (Acid and Base) 1. pH of 7 _________________________________ 2. ammonia _______________________________ 3. react with indicators______________________ 4. produces H + ions ________________________ 5. NaOH or KOH __________________________ 6. turns red litmus paper blue_______________________ 7. conducts electricity _______________________ 8. pH 0 – 6.9 _______________________________ 9. tastes sour_________________________________ 10. pH 7.1 - 14 _______________________________ 11. HCl ____________________________________ 12. produce ions in water _______________________ 13. feels slippery ________________________ 14. reacts with carbonates forming CO 2 gas _______________________ 15. reacts with metals ______________________________

4. Answers 1. neutral10. both 2. base11. base 3. both12. acid 4. acid13. acid 5. base14. base 6. acid15. both 7. acid 8. base 9. acid

5. Vocabulary 1. An ________ is a compound that changes color in the presence of an acid or base. 2. This property of an acid can “eat away” certain metals_____________ 3. The ________ is a series of numbers that indicates the concentration of hydrogen ions in a solution. 4. A _______ is an ionic compound that forms from the reaction of an acid and a base.

6. Vocabulary Continued 5. A _____________ ion is an atom of hydrogen that has lost its electron. 6. __________ and ____________ are formed after the neutralization process. 7. A _____________ ion is a negative ion made of oxygen and hydrogen. 8. ______________ is the reaction between an acid and a base.

7. Vocabulary Answers 1. indicator 2. corrosive 3. pH scale 4. salt 5. hydrogen 6. salt and water 7. hydroxide 8. Neutralization

8. pH Scale Range 0 – 14 Acids 0 – 6.9 (lower the number, stronger the acid) Bases 7.1 – 14 (higher the number, stronger the base) Neutral 7

9. Acid / Base Reactions Acids in water produce? 1. HCl Bases in water produce? 2. NaOH Acids and bases (neutralization) produce? 3. HCl + NaOH

10. Acid / Base Reaction Answers 1. H + + Cl - 2. Na + + OH - 3. H 2 O + Na + + Cl -