2-24-11
Twenty five questions (PSSA Practice #3) that deal with topics that will be on the PSSA exam. How are you doing? What strategies are you learning? How will you prepare for the exams?
If time, students take a look at the pH activities below. Pretty cool! Click on image to access site and then choose the green RUN NOW button. Your assignment is to comment on one of these simulations. Include 1) something you already knew 2) something you learned, and 3) a question that you have. Mention if you were using the “pH Scale” or the “Acid-Base” activity.
i chose the 2nd one because it looked easier to use. i already knew that water was 7 and anything under was a acid and over was a base. i learned that milk was slightly acid. how are we able to drink acids without being harmed
i thought that the ph scale is very easy to use and understand and how anything under 7 is a acid and over it is a base.i thought it was cool to see how high/ low substances are on the ph scale
1.) I knew about acids and bases and the pH scale
2.) I learned that battery acid is a strong acid and the liquid detergent is a strong base
3.) What substances are either the strongest acid or the strongest base?
I knew that water had a neutral pH of 7. I learned that soda is very acidic, I didn’t know this I thought it was more of a base. And my question is if you added two bases together would it make it more acidic or no?
I already knew that the lower the number on the pH scale the more acidic it is, and that the higher the number the less acidic it is. I learned that soda has a low pH level and that means it is more acidic. My question is, why can we still drink soda even though it is an acid?
1)I already knew that the lower the number on the pH scale the more acidic it is, and that the higher the number the less acidic it was.
2)Adding more water to an acid will make it diluted and less acidic.
3)What would happen if you added to really high acids together?
I knew that vomit had to have a high acidity because it is mainly made up of our stomach acids. Today I learned that soda has a very high acidity level and yet we are still able to consume it. A question I have is how are we able to drink soda when it has such a high acidity level.
I knew that water had the pH of 7. Somewhere I learned that soda pop is pH of 2.5 and it’s an acid. My question is that why does beer have acid?