84 5 TG: Page 73 a campfire” delete Factual error: Structure “having and and these are “baking Properties of chemical Matter changes. Just because the bread (or cookie or cake) dough does “solidifies” not make it a physical (phase) change. You have to examine the sum total of all of the physical properties of the before and after materials to decide whether a chemical reaction has occurred (which is not actually done in this TG/set of lessons). 85 5 TG: Structure Page 94 for example, for example, is Factual “(salt “(salt, and is made up of made up of sodium Properties of sodium and chlorine and chlorine ions)” Matter atoms)”
84 5 TG: Structure and Properties of Matter Page 73 “having a campfire” and “baking delete Factual error: these are chemical changes. Just because the bread (or cookie or cake) dough “solidifies” does not make it a physical (phase) change. You have to examine the sum total of all of the physical properties of the before and after materials to decide whether a chemical reaction has occurred (which is not actually done in this TG/set of lessons). 85 5 TG: Structure and Properties of Matter Page 94 “(salt for example, is made up of sodium and chlorine atoms)” “(salt, for example, is made up of sodium and chlorine ions)” Factual