Classification of Matter Video Lessons

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Problem: Choose the pure substance from the list below.A. sea waterB. sugarC. airD. lemonadeE. milk

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We're being asked to choose the pure substance from the list.


Recall that Matter can be categorized as a single or variable composition.

• Matter is considered a pure substance if it is composed of a single entity. Pure substances can be further categorized into two:

Element  cannot be separated into simpler substances or composed of only 1 type of atom (eg. O3, Cl2)
Compound  can be separated into simpler substances

• Matter is considered a mixture if they have variable composition. Mixtures are not chemically combined. Mixtures can be further categorized into two:

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Problem Details

Choose the pure substance from the list below.

A. sea water
B. sugar
C. air
D. lemonade
E. milk

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Classification of Matter concept. You can view video lessons to learn Classification of Matter. Or if you need more Classification of Matter practice, you can also practice Classification of Matter practice problems.

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Based on our data, we think this problem is relevant for Professor Lukjan's class at American Public University System.