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sweetie didn't we have some bad news for you people living in the good old US of

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A well we're weird house elves only [USA holding scroll of parchment]

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measure things with little measurements like pounds and yards and miles and

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bunches well they're silly because they don't make a lot of sense there are 36 [Gorilla grabs a bunch of bananas]

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inches in a yard 1,760 yards in a mile 5,280 feet in a mile and how's anyone

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supposed to remember all that nonsense but with the metric system there are 10

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decimeters in a meter 10 centimeters in a decimeter and 10 millimeters in a

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centimeter you feel in a sudden sense of calm walking over you yeah now that [Man standing on beach front]

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would become associated with a rational orderly system of measurements and not

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only does it make more sense but it's the system's measurement used all over

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the world like we know it's cool to be different in all budgets sure would be [Gothic man walks by]

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nice to be able to communicate with scientists in other countries than have

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them understand what the heck we're talking about because this system of

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unit they're so international it's actually called the International System [units of scientific measurements appear]

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of Units 2x lever sublimating there you didn't see that one coming

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well we call it SI for short and it's made up of a number of base unit that

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can be used to measure all sorts of things including mass volume temperature

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time and mold does not however measure athletic ability that's the other SI so [Man running on track]

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let's go through the main base quantities real quick since you'll be

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living eating and breathing these things for the rest of your chemistry career if [Woman sneezes while on the phone]

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you're trying to measure the weight of something well you use kilograms created

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by kg not to be confused with kilograms who are dangerous little old ladies like

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to hang out in alleyways are to be avoided at all cost [Boy in alleyway and elderly woman holding a knife]

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if measuring volume you'll use liter abbreviated by L yeah those soda

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companies are already ahead of the curve if measuring time you'll use the second

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abbreviated by s well okay at least we got something right for temperature [Man shrugs shoulders]

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you'll be called upon to measure using kelvins abbreviated by K as a capital K

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let's not insult this Kelvin fella making it lowercase and is measuring the [Kelvin appears]

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amount of some substance you'll use the mole abbreviated mo L and it's not a

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rodent the other thing you'll want to commit memory are the metric prefixes [Metric prefixes table appears]

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these prefixes can be used with any SI unit although in practice we don't

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really use them for temperature time or moles because we're not dealing with

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extremely large or small numbers with those types of measurement unless you [Man running on track]

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like to get your time measurements into a fraction of a nanosecond one tenth of

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a regular unit is represented by the prefix deci so 1/10 of a meter is a

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depth d meter one tenth of a liter is a deciliter and if you were normative one

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hundredth of a unit is a send tip and one thousand is a milla going in the

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other direction ten times a regular unit is deca as instead kamut ER or dekaliter

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well 100 times is hecto and a thousand times is kilo like kilometer or Silla

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leader so ya memorize those prefixes and you'll be good to go just don't ever [List of prefixes appear]

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actually utter the words kill a pound so get laughed out of the lab and I'll [Scientists appear in a lab]

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never be able to show your face again I'm assigning to the community

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