Preparing for TCAP… Bell Work… In five sentences, describe/explain the pH scale. n SPI 0807.9.1 protons + neutrons The nucleus of an atom consists of ______________. SPI 0807.9.9 The periodic table is arranged in 7 periods and 18 _____ groups. n SPI 0807.9.12 less Acids have a sour taste and a pH ______ than 7. n Acids and Bases What we know… Acids turn litmus paper ________. red blue Bases turn litmus paper _______. a base If something has a pH of 8.5, it is __________. Mrs. Harris made a mess with Diet Coke and Mentos. She probably cleaned the mess up with soap and water. The water has a pH very close to ________. 7 Types of Indicators: Reviewing the pH Scale 1. Litmus paper 2. Bromothymol blue 3. Cabbage juice Leah puts ketchup on her hamburgers. The ketchup has a pH of 5.2. What is the ketchup? Acid Chapter 14 Bleach is an example of… Base Kenny found a bottle with a warning label that read: CAUTION—Contents inside will react with metal. What is inside the bottle? Acid OH­ is a compound that ______ produce when dissolved in water. Bases
Identifying the pH of common items… Cameron found an object on his walk home from school. When he accidentally dropped it, it shattered into several different pieces. He tried heating it up, but it wouldn’t melt. After doing research, he learned that it consisted of a metal bonded to a nonmetal. What type of compound must the object be made from? Ionic Tums would be an example of… n Base n n n n The pH Scale Collage Poster: n In a creative way, design a poster that represents the following things… 1. the pH scale 2. 3 acids using pictures 3. 3 bases using pictures 4. water (neutral) 5. a scenery 6. color
In your notes, create a “blank” pH scale: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Look at each card one at a time. Compare the small dot of color on the card to the pH scale provided. Identify the substance’s pH value. Label it in your notes.