By Laurie Jarvis
By Deb Simonson
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it doesn't let me see all of the "both chemical and physical changes". what do i do?
This looks like a technical glitch. We will have our developers look at it ASAP. Thanks!
Thanks for reporting this. It has been fixed.
Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.
Learners study the effect that pressure has on boiling temperatures. Once a liquid has reached a full boil, additional heat does not raise the liquid’s temperature; however, pressure can vary the boiling point of a liquid. A brief quiz completes the activity.
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.