Physical and Chemical Changes, Acids, Bases and Salts

In science class, students have been learning about physical and chemical changes as well as acids and bases. We have learned about the characteristics that provide us with evidence that either a physical or chemical change has occured. We have had labs that dealt with testing multiple solutions and the students were required to record observations and to decide whether a physical or chemical change has taken place. In regards to acids and bases, the students have learned what the term pH means and why scientists use pH levels. In our labs we have tested mutliple solutions using cabbage juice as the indicator to decipher if the solution was acidic or basic. - Dan Trahan