By Debbie McClinton
By Dr. Martin McClinton
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What is the name of the ion PO5?
In this animated object, learners examine the kinds of physical and chemical changes that occur in substances. They practice identifying examples of each.
In this animated lesson, learners read about the disulfide bond, the second strongest chemical bond in the hair. This bond can only be altered by chemicals.
In this animated object, learners examine the properties of the peptide bond and how the bond relates to the structure of hair.