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

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00:01

No And here's your shmoop du jour Brought to you

00:05

by ancient greece Ancient sure but togas are timeless A

00:11

reaction that gives off heat to the environment is what

00:16

And here the potential answers Extra sermon ended thermic five

00:21

dollar words Well depending on the chemicals we use all

00:24

sorts of things can happen in a chemical reaction Sometimes

00:28

we makes a couple of things together and nothing happens

00:31

And sometimes we makes a couple of things together and

00:33

well they go Boom Big boom Right Well these types

00:38

of reactions when two substances give off heat are called

00:42

exo thermic reactions You are correct Answer option is okay

00:47

Xo thermic that comes from a couple of ancient greek

00:52

words The root word acts means out and ther mus

00:56

is what your uncle in wisconsin uses Keep his coffee

00:59

One can check that therm actually means heat So xo

01:03

thermic means well he goes out and endo thermic reaction

01:08

is just the opposite in an endo thermic reaction Heat

01:12

is absorbed when the chemicals react Now cnd displacement and

01:17

replacement reactions are essentially the same thing And these types

01:20

of reactions to substances react with each other and at

01:23

least one of the substances has to be a compound

01:26

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

01:30

people well when the chemicals react one element moves out

01:34

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

01:37

start with substance a and we mix it with substance

01:40

B c well in a replacement or displacement reaction After

01:44

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

01:47

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

01:50

and a c Remembering a little ancient greek can really

01:54

help make sense in the world and those old dudes

01:57

really had a keen sense of fashion We enjoy wearing

01:59

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

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