一條英文化學題 (20點) 急用!
回答 (2)
2013-11-16 5:59 am
✔ 最佳答案
Use pH paper to test the pH of those items.
2013-11-16 8:44 am
Identify acids and bases by using the pH scale.
Students investigate the pH level of household substances by testing a variety of common compounds. Substances are tested with pH strips and placed on the continuum of the pH scale range of 1 to 14. After testing a solution, the student compares the strip color to the scale provided on the container and gives the solution a rating from 1-14. Using the determined number, the name of the solution is placed on the continuum. Students will find that household substances have a specific pH property which is a characteristic needed for the substance's use. Following the lab, students will be assigned the task of testing other substances in their home to determine the pH of those substances.
Students investigate the pH level of household substances by testing a variety of common compounds. Substances are tested with pH strips and placed on the continuum of the pH scale range of 1 to 14. After testing a solution, the student compares the strip color to the scale provided on the container and gives the solution a rating from 1-14. Using the determined number, the name of the solution is placed on the continuum. Students will find that household substances have a specific pH property which is a characteristic needed for the substance's use. Following the lab, students will be assigned the task of testing other substances in their home to determine the pH of those substances.
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