102.12//PH LESSON CHALLENGE Multiple choice, Indicate one correct answer for each question, 1. Substances of acidic or alkaline nature dissolve in water and/or contain: a, salt c. carbon b. water d, hydrogen 2. A solution that has more positive hydrogen ions than negative hydroxide ions is: a. acidic C. alkaline b. neutral d. slightly alkaline 3. When a solution has an equal number of hydrogen and hydroxide ions, the solution is considered: a. acidic c, positive b. neutral d. negative 4. Distilled water with a pH of 7 is considered: a. a salt c. an acid b. neutral d. an alkali 5. On the pH scale, numbers less than 7 indicate a(n): a. acidic solution c. chemical solution b. neutral solution d. alkaline solution 6. On the pH scale, numbers greater than 7 indicate a(n): a, acidic solution c. chemical solution b. neutral solution d. alkaline solution 7. A pH of 5 is how many more times acidic than a pH of 6? a. 1.5 C. 100 b. 10 d. 1,000 8. The most accurate method of measuring pH is with: a. a pH meter c. indicator paper b. PH paper d. indicator liquid 9. What is the pH range of hair, skin and nails? a. 4.5 to 5.5 C. 7.5 to 10.5 b, 6.5 to 7,0 d. 11.5 to 12.0 10. PH balanced refers to a product that ranges from a pH of: a, 4.5 to 5.5 C. 7,5 to 10.5 b. 6.5 to 7.0 d. 11.5 to 12.0