ASVAB Physical Science 3.4

ASVAB Physical Science Drill 3, Problem 4. A reaction that gives off heat to the environment is a(n)...

ASVABASVAB Physical Science
General Science
ASVAB SciencePhysical Science
LanguageEnglish Language

Transcript

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sorts of things can happen in a chemical reaction Sometimes

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we makes a couple of things together and nothing happens

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And sometimes we makes a couple of things together and

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well they go Boom Big boom Right Well these types

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of reactions when two substances give off heat are called

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exo thermic reactions You are correct Answer option is okay

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Xo thermic that comes from a couple of ancient greek

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words The root word acts means out and ther mus

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is what your uncle in wisconsin uses Keep his coffee

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One can check that therm actually means heat So xo

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thermic means well he goes out and endo thermic reaction

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is just the opposite in an endo thermic reaction Heat

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is absorbed when the chemicals react Now cnd displacement and

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replacement reactions are essentially the same thing And these types

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of reactions to substances react with each other and at

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least one of the substances has to be a compound

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meaning it's made of more than one element compound lots

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people well when the chemicals react one element moves out

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of one compound and into the other Let's say we

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start with substance a and we mix it with substance

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B c well in a replacement or displacement reaction After

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the reaction we'd be left with two new chemicals so

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we'd start with a nbc and end up with b

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and a c Remembering a little ancient greek can really

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help make sense in the world and those old dudes

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really had a keen sense of fashion We enjoy wearing

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togas from time to time It does make thanksgiving awkward 00:02:02.902 --> [endTime] though