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Physical Science Videos 21 videos

ASVAB Physical Science 2.3
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ASVAB Physical Science 2.3. Melting is the process through which...what?

ASVAB Physical Science 2.4
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ASVAB Physical Science 2.4. A substance that consists of two or more things that are physically mixed together is a...what?

ASVAB Physical Science 3.1
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ASVAB Physical Science 3.1. Solution A has a pH of 3, while Solution B has a pH of 8. Solution A is what?

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ASVAB Physical Science 3.3 173 Views


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Description:

ASVAB Physical Science Drill 3, Problem 3. The starting materials involved in a chemical reaction are called the...what?

Language:
English Language

Transcript

00:00

[ musical flourish ]

00:03

And here's your Shmoop du jour, brought to you by baking.

00:07

It's a chemical reaction you can stuff your face with.

00:10

All right, well, the starting materials involved in a chemical reaction are called the, uh, what?

00:14

And here are the potential answers.

00:16

[ mumbles ]

00:21

All right, well, chemistry requires precision.

00:23

So to be a good chemist, we can't just take

00:26

a handful of this and a pinch of that and expect to get the result we want.

00:30

And the same thing goes for science lingo.

00:33

The words scientists use have precise meanings.

00:37

So with that, we can immediately rule out option A - supply

00:40

because it lacks that precision. Like, it could be anything.

00:43

The word "supply" isn't specific to materials involved in a chemical reaction.

00:47

We can also get rid of option C because the word "resultant"

00:50

isn't really a word used in chemistry.

00:53

But even so, we can tell that it wouldn't be right because

00:56

the question is about starting materials, not the result.

00:59

All right? All right. Well, D's out, too.

01:01

The product is what the chemical reaction produces.

01:05

It's what we end up with. The answer we're looking for is B - reactant.

01:09

Reactants are the starting materials of a chemical reaction.

01:13

Think of bread. Ingredients:

01:15

the water, the yeast, the flour, the salt.

01:18

Those are the reactants.

01:20

And when you put them together and add heat for a while,

01:22

the product is just a big fat loaf of yumminess. Yum. Bread.

01:28

All right, we just need to be careful not to eat all of our science

01:30

in one sitting. Otherwise, well, there could be a bad chemical reaction.

01:33

Yeah. Stomach ache. You don't wanna go there.

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