ChemistryChemistryMeasures Measures

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MathScience Innovation MathScience Innovation CenterCenter

Matter surrounds us in the form ofsolids, liquids, and gases.

Atoms, Elements, and Molecules

ATOMS-the basic building blocks of everything you see around you, even things you don’t see!

ELEMENTS-the kinds of atoms we can have!

MOLECULES-when atoms join together, forming bonds!

Vitamin C

20 atoms: 6 carbon 8 hydrogen 6 oxygen

C6H8O6C6H8O6

Something Else

Changing which atom is bonded to which canchange the properties of a molecule.

It will change how itlooks and acts.

What is a polymer?What is a polymer?

Polymers are made of many many Polymers are made of many many moleculesmolecules

all strung together to form really all strung together to form really long chains.long chains.

Polymers can occur in nature or they Polymers can occur in nature or they can be man-made.can be man-made.

This is a small molecule. It is not a polymer.

This is apolymer.Many moleculesare strung together.

What is a polymer?What is a polymer?

These long polymer chains are These long polymer chains are formed by teeny tiny molecules formed by teeny tiny molecules called called monomersmonomers..

A single polymer molecule is made A single polymer molecule is made out of hundreds of thousands (or out of hundreds of thousands (or even millions!) of monomers!even millions!) of monomers!

What kind of math is What kind of math is here?here?

Long chains mean adding the same Long chains mean adding the same thing over and over.thing over and over.

How does that relate to math?How does that relate to math? Long chains can be hard to analyze. Long chains can be hard to analyze.

Sometimes it’s easier to look at the Sometimes it’s easier to look at the parts.parts.

How does that relate to math?How does that relate to math?

Today we will… Today we will…

Explore the construction of Explore the construction of polymers.polymers.

Create a polymer.Create a polymer. Measure ingredients in a formula.Measure ingredients in a formula. Convert decimals to fractions and Convert decimals to fractions and

fractions to percents.fractions to percents. Compare characteristics of polymers Compare characteristics of polymers

and non-polymers.and non-polymers.

Gak Data Sheet

Ingredient

Standard

Metric Decimal

Percent

Solution A

water .375 c.

glue .5 c.

Solution B

borax 2 tsp.

water .667 c.

TOTAL

Gak Data Sheet

Ingredient

Standard

Metric Decimal

Percent

Solution A

water .375 c 88.721=89ml

glue .5 c 118.29=118ml

Solution B

borax 2 tsp 9.86=10ml

water .667 c 157.57=158ml

TOTAL 375ml375ml

Gak Data Sheet

Ingredient

Standard

Metric Decimal

Percent

Solution A

water .375 c. 88.721ml=89 ml

0.237=0.24

glue .5 c. 118.29ml =118 ml

0.31=0.31

Solution B

borax 2 tsp. 9.86ml=10 ml 0.026=0.03

water .667 c. 157.57ml=158 ml

0.421=0.42

TOTAL 375 ml375 ml

1.0

Gak Data Sheet

Ingredient

Standard

Metric Decimal

Percent

Solution A

water .375 c. 88.721=89 ml

0.237=0.24

24%24%

glue .5 c. 118.29 =118 ml

0.31=0.31

31%31%

Solution B

borax 2 tsp. 9.86=10 ml 0.026=0.03

3%3%

water .667 c. 157.57=158 ml

0.421=0.42

42%42%

TOTAL 375ml375ml 1.0 100%100%

EthaneEthane

First discovered in 1834First discovered in 1834 A component of natural gasA component of natural gas

ButaneButane

Liquid formLiquid form Found in LPG bottles used in gas Found in LPG bottles used in gas

grillsgrills

ParaffinParaffin

Waxy solidWaxy solid Used in candles and has a low Used in candles and has a low

melting pointmelting point

PolyethylenePolyethylene

SolidSolid This is everyday plastic—milk jugs, This is everyday plastic—milk jugs,

detergent bottles, or any plasticdetergent bottles, or any plastic

Chemical engineering uses math and Chemical engineering uses math and the art of putting things together to the art of putting things together to create and discover new compounds.create and discover new compounds.