2-25-11
Students continued to work on the marshmallow acid-base activity in Chapter 5. These Smartboard notes 2-25-11 might help. What does the diagram below show?
Posts Tagged ‘base’
2-23-11
Students continue to work on Acid-Base activity in Ch 5 using marshmallows to build an acid and a base, a water molecule, and a hydronium ion. Do you know how hydronium is formed? Can you write the basic formula for the dissociation of nitric acid (HNO3)? Can you write the basic formula for the dissociation of potassium hydroxide (KOH)?
2-17-11
Students begin work on Acid Base activity that focuses on dissociation (Smartboard notes 2-17-11). What does the equation below show? Any idea what acid is shown in the image? White = hydrogen, red = oxygen, and grey = carbon. Can you name it?
2-15-11
Lab today to determine the actual pH of some common household substances. Smartboard Notes 2-15-11. How did your results compare with this chart?
2-11-11
Students assigned common household solutions to three categories – acids, bases, and neutral solutions. Lab notebooks were turned in with the lab activity completed up to and including the “Stop and Think” questions on p.224. Acid and Base song!
2-9-11
Students discussed 12 common household solutions and classified them as acids, bases, or neither (neutral). They justified their answers and then were given properties of acids and bases and reclassified if necessary. This activity is found on pp.222-224 in the text. See yesterday’s blog for x-credit opportunity.