Activity #7 Acids and Bases

"Concept Questions for Chemistry using PhET" by Trish Lobelein.  Also used the "Clicker Questions pH scale" activity.

B. False The middle solution is neutral, the yellowish color is a base and the clear colored solution on the far left is an acid. 

D, more than one. 

C, the most acidic one is C which has a pH of two which is very acidic on the pH scale.

B, B has a pH of thirteen so on the pH scale that is pretty basic.



D, more than one.  A and B are acidic with ph's of 5 and 2.5.  C has a pH of 13 and is not Acidic but basic.

A, it will increase the pH.  The pH will increase because adding water lowers the acidity.

B, the pH will lower.  More water lowers the bascicity.  Bascicity is the number of hydrogen atoms replaceable by a base in a particular acid. 

A, a.b.c The first is milk, and then blood, and then a custom base.

C, b.a.c  It starts with water and then a custom pH of 13 and then soad pop



A, something was added to made the equilibrium shift left.

Activity on Strong and Weak Acids and Bases PhET Lab