Acids and Bases
Step 1. Questions
What are acids and bases? Scientists use many definitions of these terms. One useful definition involves pH, which is a measure of the concentration of hydrogen ions in a solution. Acids have pH values less than 7. Bases have pH values greater than 7. Neutral solutions, as well as pure water, have a pH of 7 exactly.
For this e-Journal report, you will research different examples and uses of acids and bases. Here are questions to guide your research:
Are you ready? Begin by visiting the Web sites listed in Step 2. Write down what you learn in the note-taking boxes. You may also use search engines to research acids and bases, or visit the local library.
- What are some examples of acids? What are their pH values? How are these substances used?
- What are some examples of bases? What are their pH values? How are these substances used?
- What is acid rain? What kind of harm does acid rain cause?
- What are some acids and bases that the human body uses? Why are they important?
- What questions do you have about acids and bases?
When you are ready, follow Steps 3 and 4 to write your report.
Step 2. Research
Research answers for the questions you were asked in Step 1. Visit these Web sites. Take notes about them on this page, too!