Unit 1 lectures s2015

Welcome to ChemistryWelcome to Chemistry
• Get a book, handouts & sit in seating chart (as
you come in)
– Handouts include: safety contract, personal note (to return) see online for college credit
• While reading handouts I’ll check books out to
you. -(ID CARDS)
• Log onto http://tinyurl.com/mrkicker
– See dual credit and remind links.
• Log into Learn.kps (pass code on the board)
– Click and fill out info sheet for Mr. K Then click on
read and complete the Rules and Protocol form

Online things
• Google Classroom
– Block 1 Code u0kqiu
– Block 2 Code goqo3i4
• Moodle (AKA Learn) Chemistry kuecker’s sections
– Enrollment code: chem1 (block 1) chem 2 (block 2)
• Remind text: 81010 @khskick1
• Classzone.com (see moodle)

Go to the website: www.remind.com/join/khskick2 (for
block two class) For Block three class, change the last part to
khskick3, etc. for the other blocks.
Then you can pick if you want to have text message alerts or email
alerts.
OR
Text to (402) 413-6491 message: @khskick1 or USE
Directions for SIGNING UP FOR REMIND

Online book
classzone.com
How to get to our Online Chemistry Book
This contains videos, animations, interactive tools and of course a
searchable book. Students can create their own accounts by going to
classzone.com and using the Activation Code.
Here it is: 5730772-200
1. Click on sign in
2. Create a student account
3. Type in birthday
4. Create a log in and password

Go to my website and look at
Rules Protocol General
information for chem or applied
chem. Then do the forms on
moodle.

Cellular phones, ear buds,
any electronics, that are NOT
intended for my classroom goals
are NOT to be out
and / or are to be silenced.

Tardy policy
TARDY POLICY: You must be in your be in your assigned seat
before the bell STARTS to ring. With your assignment and notebook
out ready to start. Consequences are:
1st tardy: warning –free
2nd tardy: 10 minute detention that same night or the next morning.
3rd tardy & subsequent: 20 minute detention & referral & school
policy beyond this.

Leaving the Room
• I don’t allow you to go anywhere.
• IF I DO. . .
• MUST TAKE A PASSES -bonus
• Make up time for missing time.
• Nurse
• Restroom - not frequent
• Need a pink pass

Moodle
• How will we use this?
• Blogging
• Vocabulary
• Videos
• Practice test
• Test with feedback!

Safety contract
• Take home, get signatures and return it tomorrow! We’ll
discuss it tomorrow and take a safety test

Keys to success in Chemistry
• Get a 3 ring binder! (keep everything organized)
• Pay attention to the skills we cover & review daily!
• DO NOT MISS class. (Makeup work quickly)
• READ YOUR TEXT!
• Do more work than just the assigned problems.
• STOP IN IF YOU DON’T GET IT!!!
• Bring a sci. calculator & your book/chromebook daily
• Always do your homework!!! (Plan on 30-45 min a night!)
• Show all your work at all times
• DO THE PDP’S AS I SUGGEST!

Keys to success in Chemistry
• Know our
“clear learning goal”
for the day.

Grading
• Check Powerschool frequently!
• I go by total points. Everything is worth
point, tests have many more points. But
don’t overlook the simple day to day
things. Complete lab write ups and daily
work as these are important too.

DUAL ENROLLMENT
• This class gives college credit
for chem 145
• There is a handout on my
website.
• PLEASE LET YOUR PARENTS
KNOW!
– This is for those going to a
college such as UNK,UNL,
state colleges, etc. that are
NOT majoring in a science
area.
– THIS IS ONLINE ON MY PAGE

Lab partners & discussion partners
• Each unit, you’ll select a new partner. I’ll assign the first
partners. My intent is that you work with many different
students throughout the course of the class.
• EACH MUST DO THEIR OWN WORK!

Now
Log onto moodle
Fill in info sheet and rules protocol (next slide covers rules)

Time to start
learning
Chemistry.
Look at objectives and take notes on that page.
(on moodle)
ON TO CHEMISTRY LEARNING

Today’s Goal (outline)
• Vocabulary and Objectives (google –sharing)
– handout
• Review the demos from yesterday (NOTES)
• Safety & procedures in the lab.
• Safety Test (on moodle)
• Scavenger Hunt & Kahoot
• Begin Lab – check out bunsen burners

What is chemistry and what do we do in this
class??
• Routine: vocab, lecture, learning, Lab, Homework, tests
• We learn something new every day!
• Problem day problems
– Give them a sample

Show demos and list evidences
of a chemical change
(think of chemical and physical properties too)
Kool-Aid to water to milk
M&M & chlorate
Sugar & sulfuric
Nitric and penny
Mg & HCl
Nail & CuSO4

5 evidences of chemical change.
• Release of energy: heat or light. Could be a gain of
energy too. (exothermic or endothermic)
• Color change
• Precipitate or solid being formed.
• Gas
• New odor
• Is there an acronym we can make to remember these?

Definition of chemistry.
• The study of the structure,
properties and composition of
substances and the changes that
substances undergo

Why study chemistry?
• Chemistry is NOTa study of facts.
It is an ongoing human activity.
• What things are you involved in, or see, that do NOT
involve chemistry?

Chemists look at composition and
behavior of matter. They create
new products or make
existing products better

Types of Chemists (NOT ON ANY TEST)
• Organic chemistry
• Inorganic chemistry
• Analytical chemistry
• Physical chemistry
• Biochemistry

Organic chemistry
• Contain carbon

Inorganic chemistry
• Substances that don’t contain carbon

Analytical chemistry
• Composition of substances (minute quantities)

Physical chemistry
• Concerned with theories and
experiments that describe behaviors of
chemicals.

END OF DAY 1
• Vocabulary (sheet and online as well)
• Do online vocabulary quiz this week! Must
do quizzlet first.
• Read page 1-8 and do pg 8 # 1-5

Day 2 Goals
• Observe and practice safety procedures
• Complete a Safety test
• Begin a Scavenger hunt
• Begin our first lab: cut and bend glass
• Collect handouts
• –@start info sheet @ end safety contract.
• Discuss pg 8 # 1-5 (walk by vocab)
• Whiteboard quiz: Evidence of chem change.
• Whiteboard quiz: What is chemistry?

BOOK PROBLEMS Ch 1 (posted on tinyurl.com/mrkicker)
• Assign book questions part 1 (due in two
days)
• Read ch1 pg 3-8 & 12 (quantitative and
qualitative) do pg 19-20: 4 &11
• Read ch 2 ALL
• Do pg 30: 1, 3 See ex 2.1 pg 31 do pg
31: pp 2.1, pg 34: pp 2.2 & 1-5
Assignment

Assignment
• Do online vocabulary quiz this week! Must do quizzlet
first & mark the completed box.
• See my www.tinyurl.com/mrkicker page for assignment
listings.

Safety
Take some time
to read the
KHS safety
contract & then
see some key
points on this
handout.
A copy of this safety agreement will be on file with your science teacher and a copy should be retained by the student.
Kearney High Science Safety Contract.
Adapted from Flinn Scientific’s Student Safety Contract
PURPOSE
Science is a hands-on laboratory class. You
will be doing many laboratory activities that
require the use of hazardous chemicals.
Safety in the science classroom is the #1
priority for students, teachers, and parents.
To ensure a safe science classroom, a list of
rules has been developed and provided to
you in this student safety contract. These
rules must be followed at all times. Two
copies of the contract are provided. One
copy must be signed by both you and a
parent or guardian before you can participate
in the laboratory. The second copy is to be
kept in your science notebook as a constant
reminder of the safety rules.
GENERAL RULES
1. Conduct yourself in a responsible manner
at all times in the laboratory.
2. Follow all written and verbal instructions
carefully. If you do not understand a
direction or part of a procedure, ask the
instructor before proceeding.
3. Never work alone. NO student may work
in the laboratory without an instructor
present.
4. When first entering a science room, do
not touch any equipment, chemicals, or
other materials in the laboratory area until
you are instructed to do so.
5. Do not eat food, drink beverages, or chew
gum in the laboratory. Do not use laboratory
glassware as containers for food or
beverages.
6. Perform only those experiments
authorized by the instructor. Never do
anything in the laboratory that is not called
for in the laboratory procedures or by your
instructor. Carefully follow all instructions,
both written and oral. Unauthorized
experiments are prohibited.
7. Be prepared for your work in the
laboratory. Read all procedures thoroughly
before entering the laboratory. Listen to oral
instructions before doing the lab.
8. Never fool around in the laboratory.
Horseplay, practical jokes, and pranks are
dangerous and prohibited.
9. Observe good housekeeping practices.
Work areas should be kept clean and tidy at
all times. Bring only your laboratory
instructions, worksheets, and/or reports to
the work area. Other materials (books,
purses, backpacks, etc.) should be stored in
the classroom area.
10. Keep aisles clear. Push your chair under
the desk when not in use.
11. Know the locations and operating
procedures of all safety equipment including
the first aid kit, eyewash station, safety
shower, fire extinguisher, and fire blanket.
Know where the fire alarm and the
exits are located.
12. Always work in a well-ventilated area.
Use the fume hood when working with
volatile substances or poisonous vapors.
Never place your head into the fume hood.
13. Be alert and proceed with caution at all
times in the laboratory. Notify the instructor
immediately of any unsafe conditions you
observe.
14. Dispose of all chemical waste properly.
Never mix chemicals in sink drains. Sinks
are to be used only for water and those
solutions designated by the instructor. Solid
chemicals, metals, matches, filter paper, and
all other insoluble materials are to be
disposed of in the proper waste containers,
not in the sink. Check the label of all waste
containers twice before adding your
chemical waste to the container.
15. Labels and equipment instructions must
be read carefully before use. Set up and use
the prescribed apparatus as directed in the
laboratory instructions or by your instructor.
16. Keep hands away from face, eyes, mouth
and body while using chemicals or
preserved specimens. Wash your hands with
soap and water after performing all
experiments. Clean all work surfaces and
apparatus at the end of the experiment.
Return all equipment clean and in working
order to the proper storage area.
17. Experiments must be personally
monitored at all times. You will be assigned
a laboratory station at which to work. Do not
wander around the room, distract other
students, or interfere with the laboratory
experiments of others.
18. Students are never permitted in the
science storage rooms or preparation areas
unless given specific permission by their
instructor.
19. Know what to do if there is a fire drill
during a laboratory period; containers must
be closed, gas valves turned off, fume hoods
turned off, and any electrical equipment
turned off.
20. Handle all living organisms used in a
laboratory activity in a humane manner.
Preserved biological materials are to be
treated with respect and disposed of
properly.
21. When using knives and other sharp
instruments, always carry with tips and
points pointing down and away. Always cut
away from your body. Never try to catch
falling sharp instruments. Grasp sharp
instruments only by the handles.
22. If you have a medical condition (e.g.,
allergies, pregnancy, etc.), check with your
physician prior to working in lab.
CLOTHING
23. Any time chemicals, heat, or glassware
are used, students will wear laboratory
goggles. There will be no exceptions to this
rule!
24. Contact lenses should not be worn in the
laboratory unless you have permission from
your instructor.
25. Dress properly during a laboratory
activity. Long hair, dangling jewelry, and
loose or baggy clothing are a hazard in the
laboratory. Long hair must be tied back and
dangling jewelry and loose or baggy
clothing must be secured. Shoes must
completely cover the foot. Sandals should
not be worn in the lab.
26. Lab aprons have been provided for your
use and should be worn during laboratory
activities.
ACCIDENTS AND INJURIES
27. Report any accident (spill, breakage,
etc.) or injury (cut, burn, etc.) to the
instructor immediately, no matter how trivial
it may appear.
28. If you or your lab partner are hurt,
immediately notify your teacher and request
the proper paperwork from the nurse.
29. If a chemical splashes in your eye(s) or
on your skin, immediately flush with
running water from the eyewash station or
safety shower for at least 20 minutes. Notify
the instructor immediately.
30. When mercury thermometers are broken,
mercury must not be touched. Notify the
instructor immediately.
HANDLING CHEMICALS
31. All chemicals in the laboratory are to be
considered dangerous. Do not touch, taste,
or smell any chemicals unless specifically
instructed to do so. The proper technique for
smelling chemical fumes will be
demonstrated to you.
32. Check the label on chemical bottles
twice before removing any of the contents.
Take only as much chemical as you need.
33. Never return unused chemicals to their
original containers.
34. Never use mouth suction to fill a pipet.
Use a rubber bulb or pipet pump.
35. When transferring reagents from one
container to another, hold the containers
away from your body.
36. Acids must be handled with extreme
care. If needed, you will be shown the
proper method for diluting strong acids.
Always add acid to water, swirl or stir the
solution and be careful of the heat produced,
particularly with sulfuric acid.
37. Handle flammable hazardous liquids
over a pan to contain spills. Never dispense
flammable liquids anywhere near an open
flame or source of heat.

Goggles - prefer no contacts
read & listen carefully
No food or gum in lab

Safety shower
Use if large amount of acid
or base or strong chemical
is spilled on you or your
clothing.
(see the chem jeans!)

eyewash station
chemicals in your eyes
The use of contacts is not
recommended in lab.

Fume hood
use when a gas, especially colored
gas, could be given off.
Show how do turn them on & off.

Handling chemicals
use spoons
don’t eat or taste stuff
Show how to get stuff
& how to mass things.

Smelling
Use wafting technique

Mixing Chemicals
do as instructed
Use small amount
Never put back into
original container.

Gas Outlets & Burners
Check your equipment.
Wear goggles with flames.
Light the match first.

Gas Outlets - Burners
Turn on the gas at the
valve and then at the
burner.
If the flame goes out turn
off the gas immediately.

Broken glass causes
heat
dropped
Never heat cracked glassware.
Put broken glass in sharps
container

first aid (FORM TO FILL IN)
remain calm
report all accidents
immediately
no matter how small

fires
use the blanket for people
use extinguisher for
materials etc. PAS (pull, aim,
squeeze)
if there is a fire…

lab cleanup
spills
liquids - sand
powders - sweep up and
dispose.
Crock for solid waste.
Matches go in the trash! *

In summary
follow classroom
rules.

In summary
Read & Listen
carefully

In summaryIn summary
You’re here to be
curious, experiment,
and discover.

In summary
You’re not here to do
stupid stuff! So use
your common sense!
See lab safety video spoof

Read general info lab safety recap

Read our KHS safety contract, sign and return
• Next is a safety quiz prior to preparing for our first lab.

Safety test
• Do this on moodle (AKA
Learn.kps, (password on board)
• then use your scavenger hunt to
locate some of the materials.
Begin to memorize their names.

Working in Chem LAB
• Show how electronic balance is zeroed
• Show how to read grad and thermometer
• Check out students on Burners & do glass cutting &
bending & Pre lab for the next day.
– After you are done, clean up & start book problems

BOOK PROBLEMS Ch 1 (posted on tinyurl.com/mrkicker)
• pg 19-20: 4 &11
• pg 30: 1, 3 See ex 2.1 pg 31 do pg 31:
pp 2.1, pg 34: pp 2.2 & 1-5
Any Questions? (due tomorrow)

Working in Chem LAB
• ORAL INSTRUCTIONS
• Show how electronic balance is zeroed
• Show how to read grad and thermometer
• Demo limewater
• Demo H2O2  H2 + O2
• Complete lab carefully. Should take about 30 minutes
• You will turn it in and we will discuss some things.

Working in Chem LAB
• Materials
– Straw – demo by kicker
– 2 weigh boats (Mg & MgCO3)
– Thermometer
– Lg TT (test tube) for Rxn -acid goes in here
– Sm TT for limewater test
– Sm TT to collect gas
– Wooden splint to test gas
• Limewater will already be filtered, or almost clear*
Otherwise Filter it!

After Lab (Kahoot time)
• Done early: Bee Blog
• Also: I made a scavenger hunt for Kahoo.
• Chem Equipment Scavenger Hunt
• Students log in at https://play.kahoot.it
• I log in at https://create.kahoot.it

Goals
• Discuss & turn in what you learned from lab pg 9-10
• Discuss book questions from Ch 1 & turn in
• Complete some notes on properties & changes
• Observe a demonstration on changes 11-13
• Complete a small lab on change pg 14-15

Law of Conservation of Mass
• Mass can not be created or destroyed in
ordinary (not nuclear) chemical reactions
or physical change
• All the mass can be accounted for.
–Burning of wood results in products that
appear to have less mass as ash; where
is the rest?

In a chemcial reaction
• products have NEW PROPERTIES because the ratio
and arrangement of atoms is different!
• We draw an arrow from reactants to products
R  P
• The exothermic reaction when Magnesium metal burns
can be shown by this reaction:
Mg + O2  MgO + Heat

Reactant
• A starting substance in a chemical reaction.
H
2
0 --> H
2
+ O
2
H
2
SO
4
+ NaOH --> Na
2
SO
4
+ H
2
0

Product
• A substance that is formed in a chemcial reaction.
H20 -->
H2 +O2
H
2
SO
4
+ NaOH --> Na
2
SO
4
+ H
2
0
electricity

Reaction
• A process in which chemicals
undergo a chemical change. We
can write equations for these.
• (later we use that equation to determine a lot of information)
• They now have different physical AND chemical properties

Demo
• H2O2 H2O + O2
• Define element, compound & Discuss Subscripts
& diatomic elements. (HONClBrIF’s)
– 1 atom type Vs More than one atom
– DRAW PICTURES (DOT DIAGRAMS)
• Mg + HCl --> H2 + MgCl2
• MgCO3 + HCl --> MgCl2 + H20 + CO2
MnO2 

Law of Constant proportion
• When elements form compounds they do so in simple
whole # ratios. Hence formulas.
Zn +HCl  ZnCl2 + H2
• Later we will talk about balancing reactions.

POST LAB
Let’s see the reactions for the lab.
• Teach reactant and product & (aq) (s) (g)
• Mg + HCl --> H2 + MgCl2
• MgCO3 + HCl --> MgCl2 + H20 + CO2
• CO2 + CaO --> CaCO3(the cloudy stuff in the limewater) SHOW ON PT
• Have a few students put these on the whiteboard and put in the labels (aq) (s) (g)
• Discuss exothermic & endothermic, put Heat in the equation as a product.
• Draw with dot type diagrams.

Identify three common lab gases.
• CO2 Hydrogen (H2) & Oxygen (O2)
• Which is flammable?
• Which supports combustion?
• Which extinguishes flames?
• Know limewater test.

Sample quiz
• PbNO3 + KI --> PbI + KNO3
• KNO3 + Li --> K + LiNO3

Endothermic reactions
Reactions that absorb heat to progress. It feels cold
Ex: a physical change of melting an ice cube
This has a positive gain in energy (need energy to make it
go.)
R + E -> P

Exothermic reacions
• Energy is released from the reaction.
• It feels hot
This has a negative gain in energy (it gives us energy)
R -> P + E

Physical property
• A property that can be observed without changing
the chemical composition of the material
• Words that describe matter (adjectives)
• Examples: color, shape, malleability, hardness, m.p., b.p.
etc.

Chemical property
• The ability to undergo chemical reaction. A property that
relates to the chemical change that something could
undergo.
• It can only be observed by changing the composition of
the material.
• Ex: it could fade in sunlight, will decomposes in acid. . .
Etc.

Physical change
• An alteration of a substance that does not affect its
chemical composition.
• A change in appearances or form,
without changing the composition.
• Ex. Melting, evaporation, sublimation, boil, melt, cut,
bend, split, crack
• Boiled water is still water etc.

Chemical change
• a change where a new form of matter
is formed and chemical bonds are
made or broken. (see 5 evidences)
• The ratio of atoms is changed to
something else & atoms are
rearranged.
• Ex. Rust, burn, decompose, ferment

What is a
• physical property of Paper, of Mg?
• Chemical property of paper, of Mg?

Changes Demo pg 11-13
Followed by a mini- Labpg 15 & 16
• A Video is online as well
• Complete lab pg 15-16
• Homework: page 14 “which are
which” & book probs.(next pg)
•

Book questions Set 2
Book problems Part 2: read pg 35-
Pg. 40 #2.3, pg 43 1- 6 pg 45-46 3, 4,
5, 8-14, 16-18, 23-29. Pg 47 1-10
(due in two days)

Vocabulary and Change Demo/Lab
• Notes in packet.

VOCAB IS BELOW
• I’ll go pretty quickly, I expect that you will listen and
then look at your book to fill them in. ( or go online)
You MUST have a working knowledge of these
terms!!! And sometimes the vocab sheets will be graded.
• Handout periodic tables. Put your name on these. Put kicker’s
class on them also.

Matter
• Anything that has mass and takes up space

Atom
• Simplest form of matter that can not be chemically
decomposed.
• See bottom of pg 24, especially the term particulate.

Element
• A substance that cannot be changed into simpler
substances under normal laboratory conditions
• Only 1 type of atom
• Where do you look for a list of these?

Metals
• One class of elements that includes the majority of the known
elements. Some properties: Luster or shine, malleable, ductile,
good conductors of electricity and heat.

Nonmetals
• Elements that are grouped on the right side of the
periodic table and have the following properties:
• Dull looking, brittle, poor conductors heat and
electricity

Metalloid
• These are the elements that are
found between the metals and
non metals on the periodic table.
They have some properties of
both.
– For instance they could be shiny
and brittle and conduct electricity
well, but not heat.

Differentiate between
• Metal (properties & location)
– Luster, malleable, ductile, conductors of heat &
electricity
• Nonmetal (properties & location)
– Dull, brittle, non conductors
• Metalloid (properties & location)
– Some properties of both
SEE OUR P.T.

Molecule
• A molecule is a chemical compound made up of
nonmetals.

Compound
• A substance that can be separate into simpler
substances (element or other compounds) only by
chemical reactions. Note: Compound have formulas

Mixture
• A physical blend of two or more substances. Not
chemically combined.
– Heterogeneous & homogenous

Solution
• A homogeneous mixture

Composite
• A mixture that is used for constructing things. Usually it is
layered and heterogeneous

Go over quiz
KAHOOT
Another one is online, we’ll do that at the
end of the class (password TBA)
Matter cart & classification of matter PPT
•WS classification and image ws
Today

DEMO Show & Tell
• I have a cart with elements, compound,
solutions (homogenous mix.) & mixtures. Also some:
metals, non metals, & metalloid.
• Ask what is the easiest to distinguish?
• Do you know enough to classify?
• (go thru these notes, then return to this cart of items)
Element
If: M, N, S
Compound Mixture
If: Homo or
Hetero
Solution? Substance
Y or N

What is Matter?
• Matter is anything that takes up
space and has mass.
• Mass- amount of material or “stuff” in
an object
• Weight is due to gravity, and
changes from location to location;
mass is always constant.

Classification (sub classification)
• Element (metal, nonmetal, metalloid)
• Compound (has formula. . . Constant proportion of
elements)
• Mixture * (heterogeneous or homogeneous)
• *special mixtures for construction are called composites

Types of Matter
• Substance- a particular kind of matter
- pure; is uniform (all the same) and
has a definite composition (examples
are elements & compounds)
• Mixture- more than one kind of
matter; has a variable composition

States or Phases of matter
• Solid- matter that can not flow (definite
shape) and has definite volume.
• Liquid- definite volume but takes the
shape of its container (flows).
• Gas- a substance without definite
volume or shape and can flow.
• Vapor- a substance that is currently a
gas, but normally is a liquid or solid at
room temperature. (water vapor?)

States of MatterStates of Matter
Solid
Liquid
Gas
Definite Volume?
YES
YES
NO
Definite
Shape?
YES
NO
NO
Temp.
increase
Small Expans.
Small Expans.
Large Expans.
Com-pressible?
NO
NO
YES

Solid Liquid Gas
Melt Evaporate
Condense
Freeze

Mixtures
• Physical blend of at least two substances; variable
composition
• Heterogeneous- mixture is not uniform in composition
• Chocolate chip cookie, gravel, soil.
• Homogeneous- same composition throughout; called
“solutions”
• Kool-aid, air, salt water
• Every part keeps its own properties. These look
uniform, but are NOT always put together in the same
ratios.
• Alloys are solutions.

Solutions
• Homogeneous mixture
– We haven’t changed the individual components.
• Mixed molecule by molecule
• Can occur between any state of
matter
–gas in gas; liquid in gas; gas in liquid;
solid in liquid; solid in solid (alloys), etc.

Solutions
• Like all mixtures, they keep the
properties of the components.
• Some can be separated easily by
physical means: rocks and marbles,
iron filings and sulfur

Phases
A “system” with uniform composition and
properties are a phase. Pure substances have
one phase, homogeneous mixture have a single
phase. A heterogeneous mixture has 2 or more
phases. Think of ice cream sundaes.
Phases are “Parts you can see”

Substances
• Elements- simplest kind of matter
• cannot be broken down any simpler
• all one kind of atom.
• Compounds are substances that can
be broken down only by chemical
methods
• When broken down, the pieces have
completely different properties than
the original compound. They HAVE FORMULAS

Compound or Mixture –How do we tell?
Compound Mixture
Made of one kind
of material
Made of more than
one kind of material
Made by a
chemical change
Made by a
physical change
Definite
composition
Variable
composition
(can have varying strengths)

Another look
at a flowchart
• So where are
alloys?
• Composites?
• plastics?

Constant composition lab
3 mixtures of salt water. Find ratio of dry salt to that water
that left.

Assignment & Activity
• Classification practice around the room & WS
.
• Journal online: Find a helpful website, video or
image, share it with the class and reflect, comment,
on someone else’s.
• Review!!! Study…. Use Learn.kps & the practice
quizzes.

constant composition
•CFA
Today

REVIEW• Collect book probs and we go over CFAs
• Physical chemical thinking WS
• Ch review WS
• Create the first set of PDPs
• Online practice - ipads

Bee Blog information.
• http://bigstory.ap.org/article/honeybees-trained-croatia-find-lan
• Animals in military
• http://www.mnn.com/earth-matters/animals/photos/10-ways-a

Unit 1 lectures s2015

More Related Content

Similar to Unit 1 lectures s2015 (20)

Recently uploaded (20)

Unit 1 lectures s2015

Editor's Notes