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Category: Chemistry
Classify each of the following changes as physical or chemical, and, in the cases of chemical change, describe one observation or test that indicates new substances have been formed: milk sours a wet handkerchief dries fruit ripens a stick of dynamite explodes air is compressed into a steel container air is compressed into a steel container
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Category: Chemistry
Katie enjoyed well-child appointments at the military clinic. Because of the remote location, several doctors operated the clinic in turn. Katie liked the positive feedback at Norah's two-week checkup, where doctors praised Katie for her attentive mothering and congratulated her on Norah's impressive weight gain on what one doctor called "high-octa...