Madison

**Activity One** On [|this site], you will find information about pH and the pH scale.
 * 1) What do the letters pH mean? p=potential H=Hydrogen
 * 2) On the pH scale, how much difference is there between units (for example, between a pH of 5 and 6)? Ten
 * 3) What material is used to measure pH? Litmus paper
 * 4) What is the normal pH of rainwater? 5 and a halfff

Click on to the[| Miami Museum of Science site] to find out all about pH.

What do the letters pH stand for? What does the pH scale measure? Discover the answers to these and other questions on the [|Chem4kids] site.
 * 1) What makes a substance either acidic or basic? Acid when it has an excess of H+ ions, basic when it has an excess of OH- ions.
 * 2) On the pH scale, where would acids be found? 0-7
 * 3) Where on the pH scale would bases be found? 7-14
 * 4) What characteristics describe acids? Corrosive, conduct electricity, sour, turns litmus paper red.
 * 5) What characteristics describe bases? Conduct electricity, slippery, bitter, turns litmus paper blue.
 * 6) What would a pH of 7 indicate? That its neutral.
 * 7) Take the quiz on acids and bases (link found at the bottom of the page).

[|This website] contains basic information written in a language that is easy to understand. Be sure to visit all links within this website. > ======Textiles, Dyeing, Paper, Pulp, Chemistry, Oil Refining, Metals, Minerals, Electricity & Electrochemistry======
 * 1) In what kinds of fields (or industries) would it be necessary to measure pH?
 * 1) What is the pH of blood? Is this acidic or basic? 7 in a hlaff, kind of both because you need acid in your body to live but its not too acidic but not too basic.
 * 2) Is an apple acidic or basic? How do you know?
 * 3) What is the pH of tears? How does this compare to blood pH?
 * 4) What is the pH of coffee?
 * 5) What is the pH of stomach fluids? Does this surprise you?
 * 6) Which substance on this scale has the lowest pH? Is this surprising to you?
 * 7) Which substance on this scale is closest to neutral?
 * 8) If distilled water has no ions at all, what would its pH probably be?
 * 1) If distilled water has no ions at all, what would its pH probably be?