Alchemy Unit

Alchemy Unit

Investigation I: Defining MatterLesson 1: Penny for Your ThoughtsLesson 2: Whatsa Matter?Lesson 3: Tools of the TradeLesson 4: All That Glitters

Alchemy Unit – Investigation I

Lesson 1:

Penny for Your Thoughts

© 2004 Key Curriculum Press.

Unit 1 • Investigation I

Key Learning:Matter is defined by its characteristics properties; anything that takes up space and has volume

Unit Essential Question: what are physical and chemical properties of matter?

Concept:

Define how scientists determine intrinsic and extrinsic properties of matter

Concept:

Compare properties of matter

Concept:

Scientist use rules to conduct investigations

Concept:

Investigating intrinsic properties

Lesson Essential Questions:

why are mass, volume and density important in matter?

Lesson Essential Questions: How do scientist use equipment to conduct lab investigations

Lesson Essential Questions:What safety precautions are used in the science lab?

Lesson Essential Questions:How do we calculate mass, volume and density? Why are they important?



Essential Question

Define how scientists determine intrinsic and extrinsic properties of matter.



ChemCatalyst : Copy in your journal

Long ago, early scientists tried to turn ordinary things into gold. This pursuit was called alchemy and the people who engaged in alchemy were called alchemists.

• Do you think the alchemists were successful in turning things to gold? Explain your thinking.



Lab Safety Quiz

Answer Questions on a separate sheet of paper.

YOU WILL NOT BE ABLE TO PARTICIPATE IN LABS IF YOU FAIL THIS QUIZ!



Safety is the number one priority in the Science Lab. Do you agree?

Yes N

o

0%0%

1. Yes

2. No

Answer NowAnswer Now



I know the location of the eyewash station, safety shower, and fire extinguisher.

Tru

e

Fal

se

0%0%

1. True

2. False




The Right-to-Know Law involves......

Knowin

g what

is fo

r ...

The

right

to re

mai

n si..

.

The

right

to k

now

ab...

Knowin

g how m

uch...

0% 0%0%0%

1. Knowing what is for lunch.

2. The right to remain silent.

3. The right to know about the hazards you are exposed to.

4. Knowing how much wood a wood chuck could chuck.




Its OK to wear contact lenses when working with chemicals.

Yes N

o

0%0%

1.Yes

2. No



Goggles must be worn when...

Wor

king

with c

hemic

als

Wor

king

with a

hea

t ...

Wor

king

with g

lass

ware.

Answ

ers

1 & 3

only

.

Answ

ers

1 & 2

only

.

Answ

ers

1,2,

& 3

.

0% 0% 0%0%0%0%

1. Working with chemicals

2. Working with a heat source.

3. Working with glassware.

Answers 1 & 3 only.

Answers 1 & 2 only.

Answers 1,2, & 3.



Its OK to make up your own experiment in class as long as you are learning from it.

Tru

e

Fal

se

0%0%

1. True

2. False



If there is an accident (spill, breakage, injury, etc.) you should...

Cle

an it

up y

oursel

f.

Hid

e it

from

the

teac

her.

If m

inor,

ignore

it.

Rep

ort i

t im

med

iate

l...

0% 0%0%0%

1.Clean it up yourself.2. Hide it from the

teacher.3. If minor, ignore it.4. Report it

immediately and wait for instructions.



Its OK to return chemicals to their original container.

Tru

e

Fal

se

0%0%

1.True

2. False



Proper lab attire includes….

Dan

glin

g jewel

ry.

Bag

gy C

loth

es.

Unse

cure

d long

hai

r.

Open

-toed

sho

es.

All

the

above

.

None

of the

abo

ve.

0% 0% 0%0%0%0%

1.Dangling jewelry.

2.Baggy Clothes.

3.Unsecured long hair.

4.Open-toed shoes.

5.All the above.

6.None of the above.



When disposing of chemical wastes…

Thro

w it a

ll in

the

trash

.

Dum

p it d

own the

sink.

Lea

ve it

for t

he te

ache.

..

Follo

w inst

ruct

ions

f...

Eat

or d

rink

it.

0% 0% 0%0%0%

1.Throw it all in the trash.

2.Dump it down the sink.

3.Leave it for the teacher to clean up.

4.Follow instructions from the teacher.

5.Eat or drink it.



Horseplay and practical jokes are permissible in a lab setting. Do you agree?

Yes N

o

0%0%

1.Yes

2.No



If I don’t understand the lab instructions, I should…..

Ask

the

teac

her.

Mak

e up

my

own.

Do n

othin

g.

Copy

my

frien

ds an

s...

0% 0%0%0%

1.Ask the teacher.

2.Make up my own.

3.Do nothing.

4.Copy my friends answers.



When curious, I should smell substances directly….

Yes N

o

0%0%

1.Yes

2.No



I should identify unknown white powders by tasting them….Yum-O.

Tru

e

Fal

se

0%0%

1.True

2.False



If I do not follow lab safety rules AND the instructions of the teacher, the following will happen...

Noth

ing.

I w

ill g

o to ja

il.

I w

ill, p

ossi

bly,

fail

th...

I w

ill a

utom

atic

ally

fail.

..

I w

ill, p

ossi

bly,

lose

la...

Choic

es 3

&5.

0% 0% 0%0%0%0%

1.Nothing.

2.I will go to jail.

3. I will, possibly, fail the assignment.

4. I will automatically fail the course.

5. I will, possibly, lose lab privileges.

6. Choices 3&5.



I will follow all lab safety rules….

Yes N

o

0%0%

1.Yes

2.No



Penny For Your Thoughts Lab

What caused the penny to turn Silver?

What caused the penny to turn gold?

Do you think the penny is truly gold?

Explain a process you would use to determine it’s true form.


Lesson 2:

Whatsa Matter?



ChemCatalyst

Modern chemistry is defined as the study of matter.

• What do you think matter is?

• Name two things that are matter and two things that are not matter.



Here are some textbook definitions of matter:

• Matter is anything that has mass and volume.

• Matter is anything of substance in the known universe.

• Matter is anything that takes up space.

Notes

(cont.)



Mass & Volume

• Mass is the amount of matter in an object substance. We measure mass by measuring it on a scale or balance.

• Volume refers to the amount of space occupied by a substance.



Properties of Matter

• The intrinsic property of a substance is a property that doesn’t depend on size and shape.

• It is generally not easy to determine intrinsic properties from the appearance of a substance.

• Ex. Reactivity, flammability, density



Properties of Matter

Extrinsic Properties can be observed qualitatively.

Ex. Color, size, shape, texture



Density• Density is defined as the mass per

unit volume or how much “stuff” there is in a certain space. Density is an intrinsic property of matter.

D = m v

D= density (g/ml or g/cm3)M= mass (g)

V= volume (ml or cm3)



Check-Out

Which of the following can be classified as matter according to our definition?

a) a beam of sunlight

b) an autmobile

c) an idea

d) your breath

e) rain

f) sadness



Wrap-Up

• Matter is everything that takes up space.

• Matter exists in many forms.


Lesson 4:

All That Glitters



ChemCatalyst

In the year 1 B.C., King Hiero commissioned the creation of a golden crown. However, he didn’t believe that the goldsmith used all gold. He asked Archimedes to determine if the crown was solid gold.

(cont.)



• Do you think Archimedes can determine if the crown is solid gold by putting it under water? Why or why not?

• What happens to the level of the water if you submerge a crown in the water?

(cont.)



The Big Question

• How can we use mass and volume to prove whether or not a substance is gold?



You will be able to:

• Find the mass, volume, and density of solid objects.



Activity

Purpose: It is not always easy to tell one form of matter from another. This activity will show you how to differentiate between different forms of matter by examining density, one of the physical properties of matter.

density = mass ÷ volume

(cont.)



Data and Calculations

Metal Mass

(g)

Volume of

water

(mL)

Volume of

water with

metal (mL)

Volume of

metal

(mL)

2-inch longgold-colored rod

2-inch longsilver-colored rod

4-inch longsilver-colored rod

(cont.)

(cont.)



Densities of metals

copper zinc gold aluminum brass

9.0 g/mL 7.1 g/mL 19.3 g/mL

(cont.)



Check-In

In 1999 the United States Mint produced a coin called the Golden Dollar. It features an image of Sacagawea, the famous Native American guide for Lewis and Clark. It has a mass of 9.8 g and a volume of 1.1 mL.

• What is the density of this coin?

• The density of gold is 19.3 g/mL. Is this coin truly gold? Explain.



Wrap-Up

• Density is an intrinsic physical property of matter. It is a measure of the mass per unit of volume of a substance.

• One substance can be distinguished from another by examining its intrinsic physical properties.

Alchemy Unit

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