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STATES OF MATTER Day 1
OOBLECK DEMONSTRATION
Materials
Corn Starch
Water
Mixing Bowl
Hands
Willing Participants
Food Coloring
Wooden Spoon
Recipe
1. Add your pre-measured amount of cornstarch to the mixing bowl.
2. Slowly add water while
mixing until the consistency of the mixture thickens.
Note: Adding too much water will cause the demo not to reach the proper “FEEL”.
3 minutes
OOBLECK DEMONSTRATION
Now that you have formed your Oobleck answer questions#1-3. Question 3 is asking about the STATE OF MATTER thismixture has become.
THE SCIENCE BEHIND IT
Oobleck is what scientists call a “Non-Newtonian” liquid
Newton stated individual liquids flow at consistent, predictable rates-- Oobleck does NOT follow those rules
Oobleck is a SUSPENSION, meaning that the grains of starch are not dissolved, they are just suspended and spread out in the water. If you let Oobleck sit for an while, the cornstarch would settle to the bottom of the bowl.
So why does this concoction act the way it does? Most of it has to do with pressure. The size, shape, and makeup of the cornstarch grains causes the cornstarch to “lock-up” and hold its shape when pressure is applied to it.
OBJECTIVES
SWBAT identify the motion of molecules in the four States of Matter
MATTER IS ANYTHING THAT HAS A MASS & TAKES UP SPACE
4 S
TAT
ES O
F M
AT
TER
?
All matter is composed of particles (atoms) that have attractive forces between them.
Kinetic Energy : The energy produced by an object in motion
SOLIDSVery little Kinetic Energy
particles vibrate in place
Tightly packed particles with strong bonds.
Have a definite shape and definite volume
Rigid, not very compressible
Particle diagram:
Usually more
dense – water
is an exception
LIQUIDSMedium amount of Kinetic Energy
Moderate amount of particle movement
Tightly packed, but far enough apart to slide over one another.
Have indefinite shape and definite volume. (takes the shape of the container it is in)
Particle diagram:
GASVery high Kinetic Energy
A lot of particle movement
Particles are very far apart and moveabout freely.
Gases have an indefinite shape andindefinite volume.
Particle diagram:
BUT WHAT HAPPENS IF YOU RAISE THE TEMPERATURE TO SUPER-HIGH LEVELS…BETWEEN 1000°C AND 1,000,000,000°C ?
Will everything
just be a gas?
PLASMAVery high Kinetic Energy
Plasma is different from a gas, because it is made up of groups of positively and negatively charged particles.
Like other gases has an indefinite shape and indefinite volume. Examples?
Fluorescent bulbs
Lightening
Plasma has an indefinite shape and indefinite volume.
Particle diagram:
SOME PLACES WHERE PLASMAS ARE FOUND…
1. Flames
2. Lightning
3. Aurora (Northern Lights)
4. The Sun(star in a plasma state)
5TH STATE OF MATTER
Results from dilute gases with low density
Total opposite of PLASMA
Unexcited atoms with almost no movement
Created when the temperature of matter is closest to absolute zeroAn ice cube reaches this temperature, atoms begin to clump together, cant move at all and lose all their energy and become the same
Vocabulary Definition Illustration
Solidleast amount of energy. Little atom
movement. Definite Shape/volume
LiquidAtoms move past each other. Take
shape of container. Indefinite shape,
definite volume
GasAtoms move freely from one
another. Indefinite shape/volume
PlasmaMost amount of energy.
Superheated gas atoms.
HEATING CURVE OF WATER Day 1
States of Matter
“Heating Curve of Water”
• SWBAT describe all the possible phase changes including behavior of particles before, during, and after a phase change.
• SWBAT graph the heating curve of water.
HEAT Arrows represent the
shift or an increase/decrease in the data provided
Ph
ase
Ch
ange
sDescription
Term for phase change
Heat Movement Example
Solid Liquid MeltingHeat goes into the solid as it melts
Ice Melting
Liquid Solid FreezingHeat leaves the liquid as it freezes
Water Freezing
Liquid GasVaporization
Heat goes into the liquid as it vaporizes
Water Becoming vapor or steam
Gas Liquid CondensationHeat leaves the gas as it condenses
Water forming on outside of soda can
Solid Gas Sublimation Heat goes into the solid Dry Ice placed in water
Gas Solid Deposition Heat leaves the gas instantlyWater vapor changing directly to ice during winter.
The
Hea
tin
g C
urv
e o
f W
ater
Lab
Set
up
?
Heating curve of water
Solid
Liquid
GasEvaporation
Condensation
Freezing
Melting
Incr
eas
ing
Kin
etic
En
erg
y
Which Property of Water is represented in this Phase
Change?
The Heating Curve of Water
State of Matter
One of the distinct forms that matter takes on (solid, liquid, gas, etc)
Phase Changes
Substances can go from one state to another by gaining or losing energy (heat).
CLASSIFYING MATTER
CLASSIFYING MATTER P.23
MATTER
Pure Substances
Element Compound
Mixtures
Homogeneous
Solution
Heterogeneous
Suspension Colloid
LEAVE
SPACE SO
YOU CAN
DEFINE EACH
WORD
&
ADD AN
EXAMPLE
OBJECTIVES
SWBAT classify a mixture as a suspension, colloid orsolution.
SWBAT identify the properties of homogeneous andheterogeneous mixtures.
MATTER
• Objects that take up space and have mass.
• Everything in the universe is made up of MATTER.
• Matter cannot not be created or destroyed by any chemical or physical process
matter
atoms
subatomic protonselectrons neutrons
Positivelynucleus one
element
onetwo
Negatively
electron levels
1/1850
significant
atom
Neutral
atom charge
one
Hydrogen
NOT
nucleus
empty
protons
neutrons
PURESUBSTANCES
• Made of one type of atom or molecule, can’t be separated physically
MATTER
Pure Substances
Element Compound
Mixtures
Homogeneous Heterogeneous
ELEMENT
• SAME TYPE OF ATOMS that can’t be broken down further
MATTER
Pure Substances
Element Compound
Mixtures
Homogeneous Heterogeneous
COMPOUND
• Two or more different atoms chemically bonded together
MATTER
Pure Substances
Element Compound
Mixtures
Homogeneous Heterogeneous
H2O
CFU#1CLASSIFY THE FOLLOWING AS BEING AN
ELEMENT OR COMPOUND
• Table Salt (NaCl)
• Silver (Ag)
• Hydrogen peroxide (H2O2)
• Water (H2O)
• Carbon Dioxide (CO2)
• 14-kt gold (Au)
ELEMENT COMPOUND
3 minutesEnd
MIXTURES • A physical blend of 2 or more different elements and/or
compounds that can be separated by physically
MATTER
Pure Substances
Element Compound
Mixtures
Homogeneous Heterogeneous
HOMOGENEOUSMIXTURE
• Mixture that is evenly distributed & the same throughout
Usually involves a mixture of two or more liquids, gases or a solid
that dissolves in a liquid
MATTER
Pure Substances
Element Compound
Mixtures
Homogeneous Heterogeneous
HETEROGENEOUSMIXTURE
• Mixture where the substances are not evenly distributed.
• They usually involve a mixture of a solid in a solid.
MATTER
Pure Substances
Element Compound
Mixtures
Homogeneous Heterogeneous
CFU#2CLASSIFY THE FOLLOWING AS BEING AN
HOMOGENOUS OR HETEROGENEOUSMIXTURE
• Salad dressing
• Apple juice
• Beach Sand*
• Paint
• Plain Hand soap
• Lucky Charms
• Tea
• Brass (Cu & Zn)
Homogenous(same throughout)
Heterogeneous(differences can be seen )
3 minutesEnd
HOMOGENEOUS OR HETEROGENEOUS?
Suspension Colloid Solution
SUSPENSION
A heterogeneous mixture containing solid particles that are large
enough to fall out of solution and create “layers”.
Example:
Root Beer Float
Separatory Funnel
Organic Chemistry
COLLOIDS
• Example:
A homogeneous mixture that consists of particles of one substance
evenly suspended through a second substance that do not settle.
Milk Fog Jelly
Liquid –solid: casein
protein, fat, etc.
suspended in water
Liquid –gas: liquid
water suspended in
air
Liquid –solid: pectin
or edible gel with fruit
pieces suspended
TYNDALL EFFECT
Particles in colloids
and suspensions
are large enough
to reflect light
solution Colloid / Suspension
Particles are
dissolved, small,
abundant and will
not suspend light
SOLUTION
• Particles are smaller than in a colloid and will not scatter light
Examples:
Water Clean Air Salt Water
A homogeneous mixture in which the minor component (the solute) is
uniformly distributed within the major component (the solvent).
COLLOID, SUSPENSION, SOLUTION?
HOMOGENEOUS OR HETEROGENEOUS?
CHECK FOR UNDERSTANDING:ELEMENTS ARE COMPOSTED OF THE SAME TYPE OF ATOM
CHECK FOR UNDERSTANDING
A B C ED
DESCRIPTION PARTICLE DIAGRAM
1. ELEMENT (same atoms)
2. COMPOUND
3. MIXTURE OF ELEMENTS
4. MIXTURE OF COMPOUNDS
5. MIXTURE OF ELEMENTS AND
COMPOUNDS
Match the particle diagrams above with the correct description.
Remember each shape represents a different element
CHECK FOR UNDERSTANDING
Classify each type of matter using the classification system we just learned. Circle the correct answer in each column
MaterialPure Substance (PS) Element (E) or Compound (C)
Mixture (M) Homogeneous (Ho) or Heterogeneous (He)
Chicken Noodle Soup Pure substance | MixtureElement | Compound
Homogeneous | Heterogeneous
Blood Pure substance | MixtureElement | Compound
Homogeneous | Heterogeneous
Charcoal Pure substance | MixtureElement | Compound
Homogeneous | Heterogeneous
Clay Pure substance | MixtureElement | Compound
Homogeneous | Heterogeneous
Glass Pure substance | MixtureElement | Compound
Homogeneous | Heterogeneous
Oxygen Pure substance | MixtureElement | Compound
Homogeneous | Heterogeneous
CHEMICAL VS PHYSICAL
Physical Properties are: _________________________
__________________________________________
Chemical Properties are: _________________________
__________________________________________
Physical Changes: _________________________
__________________________________________
1.
2.
3.
4.
Chemical Changes: _________________________
__________________________________________
1.
2.
3.
4.
5.
6.
10 minutes
MATTER IS ANYTHING THAT HAS A MASS & TAKES UP SPACE
Matter is all
around you!
Add energy
Remove energy
CLASSIFYING MATTER MAPMATTER
Pure Substances
Element Compound
Mixtures
Homogeneous
-Solution
Heterogeneous
- Colloid
-Suspension
Gold (Au)
Water (H2O)Apple Juice
Oil & Water
METALS VS. NONMETALS COMPARISON CHART
Metals Non-Metals
Shiny Dull (not shiny)
Malleable/bendable Brittle/fragile/breakable
Conducts electricity Not a conductor of electricity
Reacts with acid No reaction with acid
Usually solid at room
temperature
Can be solid, liquid, or gas at
room temperature
METALS…
MIXING METALS WITH METALS OR NON-METALS
An alloy is a combination of metals or a combination of
one or more metals with non-metallic elements.
The resulting mixture forms a substance with properties that often differ from those of the pure substance, such as increased strength or hardness, or color.
Example: gold and copper produces “red gold”, gold and silver becomes “white gold”, and silver combined with copper produces “sterling silver”.
Example: iron and carbon produce “steel”
!
What specific properties of
materials allow them to be
classified?
Color
Shape
State of Matter
Mass
Volume
A physical property can be observed without changing the substance into something else. USED TO OBSERVE AND DESCRIBE MATTER.
Density
Conductivity
Melting/ Boiling/ Freezing Point
Magnetism
A physical property can be observed without changing the substance into something else. USED TO OBSERVE AND DESCRIBE MATTER.
LIST PHYSICAL PROPERTIES OF THIS CAR
CFU #1
2:001:591:581:571:561:551:541:531:521:511:501:491:481:471:461:451:441:431:421:411:401:391:381:371:361:351:341:331:321:311:301:291:281:271:261:251:241:231:221:211:201:191:181:171:161:151:141:131:121:111:101:091:081:071:061:051:041:031:021:011:000:590:580:570:560:550:540:530:520:510:500:490:480:470:460:450:440:430:420:410:400:390:380:370:360:350:340:330:320:310:300:290:280:270:260:250:240:230:220:210:200:190:180:170:160:150:140:130:120:110:100:090:080:070:060:050:040:030:020:01End2:00
A chemical property can only be observed after changing the substance into something else.
Reactivity with
other chemicals
Flammability
Toxicity
WHICH OF THE FOLLOWING ARE CHEMICAL PROPERTIES
2:001:591:581:571:561:551:541:531:521:511:501:491:481:471:461:451:441:431:421:411:401:391:381:371:361:351:341:331:321:311:301:291:281:271:261:251:241:231:221:211:201:191:181:171:161:151:141:131:121:111:101:091:081:071:061:051:041:031:021:011:000:590:580:570:560:550:540:530:520:510:500:490:480:470:460:450:440:430:420:410:400:390:380:370:360:350:340:330:320:310:300:290:280:270:260:250:240:230:220:210:200:190:180:170:160:150:140:130:120:110:100:090:080:070:060:050:040:030:020:01End2:00A
PHYSICAL CHANGEA type of change in which the form of matter is altered but NO new substance is made Most times, you
can get back what
you started with!
EXAMPLES
1. Tearing
2. Dissolving something
3. Melting/freezing/boiling
4. Cutting
TELL ME WHAT PHYSICAL PROPERTY HAS CHANGED?
IS IT STILL THE SAME SUBSTANCE?
CFU #3
CHEMICAL CHANGEany change that results in the formation of a NEW SUBSTANCE
EXAMPLES
1. Rusting
2. Heat production
3. Fizzing or bubbling
4. Color / odor change
5. Combustibility / Flammability
6. Ability to oxidize
CFU #3
2:001:591:581:571:561:551:541:531:521:511:501:491:481:471:461:451:441:431:421:411:401:391:381:371:361:351:341:331:321:311:301:291:281:271:261:251:241:231:221:211:201:191:181:171:161:151:141:131:121:111:101:091:081:071:061:051:041:031:021:011:000:590:580:570:560:550:540:530:520:510:500:490:480:470:460:450:440:430:420:410:400:390:380:370:360:350:340:330:320:310:300:290:280:270:260:250:240:230:220:210:200:190:180:170:160:150:140:130:120:110:100:090:080:070:060:050:040:030:020:01End2:00
Which particle diagram best represents
this same substance after a physical
changehastakenplace?
Achemicalchange?
Given the particle diagram to the RIGHT
representing four molecules of a
substance:
Hint: How do we know that a chemical change has taken place?
Check for Understanding