Warm Up 9/27/13
• Which of the following does NOT help to
eliminate bias in scientific investigations?
• A. Including controls in experiments
• B. Using large samples of data when possible
• C. Conducting independent studies of the
same questions
• D. Disregarding data that do not support the
hypothesis
Warm Up 9/27/13
• Which of the following does NOT help to
eliminate bias in scientific investigations?
A. Including controls in experiments
B. Using large samples of data when possible
C. Conducting independent studies of the
same questions
• D. Disregarding data that do not support the
hypothesis
Agenda & Homework
• KEEP warm-ups (short week next week)
• Independent group work (groups will be
assigned)
• Choice board
• Magazine
• Footprint Forensics activity
• Skills Tutor/other computer work
• No homework!!
2nd Period
1. Choice Board: Jamiah, Lorraine, Diego, Victor, Justin,
Adam
2. Choice Board: Charles, Maya, Andres, Rosy, Capri,
Damani
3. Magazine: Ebrima, Ed’Zavian, Quan, Decarlo, Chase,
Jeremiah
4. Magazine: Ashley, Taj , Aja, Danny,
5. Forensic Footprints: LaQuaris, Ciara, Anna, Natalie,
Jennifer, Kaiya
6. Computer: Mykyria, Khari, Zechariah, Shakiriah,
Timiya (then Kaiya)
3rd Period
1. Choice Board: Gyonni, Chris, Jordan, Thomas,
Haven, Reggie
2. Choice Board: Shaniah, Jocelyn, Bruce, Edna,
Christian, Terrence
3. Magazine: Jaileny, Cameron, Erinn, Ashlee,
Jaquez, Ja’Sean
4. Magazine: Deshawn, Hunter, Davon, Tiffany,
5. Forensic Footprints: Colette, Andrew, Samaria,
Muhammed, Kareem, Hope
6. Computer: Icesis, Fatima, Cyrus, Edna, Kyle
4th Period
1. Choice Board: Kevin, Amin, Lena A., Kerren, Davyon,
Jadah
2. Choice Board: Karla, Alena, Nick, John D, Evan,
Amariah
3. Magazine: Tatyahna, Javaughn, Collin, Chris P,
Monica, Ketasia
4. Magazine: Syeda, Chris R, Precious, Stephen, Siani,
Alexis
5. Forensic Footprints: Trevanni, Anthony R, Kevyn, Tyler
6. Computer: Vitoria, Lena B, John B, Isaiah, Jaquan
Warm Up 9/27/13
• What is the smallest unit of a chemical
compound that still has the properties of that
compound?
• A. A nucleus
• B. A molecule
• C. An element
• D. An atom
Warm Up 9/27/13
• What is the smallest unit of a chemical
compound that still has the properties of that
compound?
• A. A nucleus
• B. A molecule
• C. An element
• D. An atom
Agenda & Homework
•
•
•
•
•
Turn in extra credit & remediation packets
Review & turn in HW from Wednesday
KEEP warm-ups (short week next week)
Finalize labs
Atoms Family Notes
• No homework!!
Chapter 11, pg 323
1. (0.20 x 10 AMU) + (0.80 x 11 AMU) = 10.8
AMU
2. (0.72 x 85 AMU) + (0.28 x 87 AMU) = 85.56
AMU
3. (0.60 x 69 AMU) + (0.40 x 71 AMU) = 69.8
AMU
4. (0.52 x 107 AMU) + (0.48 x 109 AMU) =
107.96 AMU
5. (0.92 x 28) + (0.05 x 29) + (0.03 x 30) = 28.11
Page 325, 2 – 6 & 9
•
•
•
•
2. atomic number
3. atomic mass
4. b. neutron
5. pg 324 (gravitational, electromagnetic,
strong, weak)
• 6. (0.30 x 203 AMU) + (0.70 x 205 AMU) =
204.4 AMU
• 9. Different PROTONS = DIFFERENT elements!!
Warm Up 9/26/13
Which of the following is a reason that
compounds are considered pure substances?
A. They are only composed of one type of
particle
B. The substance is made of two or more
elements that are physically combined
C. Different samples of any compound have
elements of different densities
D. They can be separated by physical methods
Warm Up 9/26/13
Which of the following is a reason that
compounds are considered pure substances?
A. They are only composed of one type of
particle
B. The substance is made of two or more
elements that are physically combined
C. Different samples of any compound have
elements of different densities
D. They can be separated by physical methods
Agenda & Homework
• Turn in Ch 11 bookwork
• Set up hydrolysis labs
• Finish separation of mixture lab while
hydrolysis is going
• Homework: None! Unless you haven’t
finished Skills Tutor, because zeros are going
in soon.
Mixture Lab
• Total mass should be about 25 grams +/• Each sections of beads should be about 5 – 7
grams +/• Percentages should be between 20 & 30% +/• Added together, you should get 100%!
• NO, you all should NOT have the same, but
they will be close
On a piece of paper…
• Was the bead and water mixture
homogeneous or heterogeneous? How could
you tell?
• Was it a solution, suspension, or colloid? How
could you tell?
• What property did you use to separate the
beads?
• Was that physical or chemical? How do you
know?
On a piece of paper…
• Was the bead and water mixture homogeneous
or heterogeneous? How could you tell? You
could see the parts!
• Was it a solution, suspension, or colloid? How
could you tell? You could see them & they would
settle
• What property did you use to separate the
beads? DENSITY
• Was that physical or chemical? How do you
know? We didn’t change the plastic or the water
Hydrolysis Observations
Pencil Set-up
• Bubble rising from pencils
• More bubble from the
negative side (H2 gas)
• Fewer bubbles from the
positive side (O2 gas)
Indicator Set-up
• Color change & bubbles by
clips
• More blue on the negative
side (H2 gas left an OHbase)
• Less pink on the positive
side (O2 gas left H+ acid)
Same paper…
• Sketch the two set-ups on your table.
• Write at least three observations about each
about what happens
• Based on what you know, what is happening
in each set up? A chemical change – creating
a different substance (O2 & H2 from H2O)
Test Today 9/25/13
• Study for 10 minutes (chapter 4 work, warmups, worksheets, and last quiz)
• Test will be with i-respond
• Don’t forget to hit SEND after EACH answer!!
• When through, turn test upside down (I will
collect
• Read Chapter 11, and complete 1 – 5 on page
323, and 2-6 & 9 on page 325
Warm Up 9/24/13
How is a compound different from a mixture?
A. Compounds have two or more components.
B. Each substance in a compound loses its
characteristic properties.
C. Compounds are commonly found in nature.
D. Solids, liquids, and gases can form
compounds.
Warm Up 9/24/13
How is a compound different from a mixture?
A. Compounds have two or more components.
B. Each substance in a compound loses its
characteristic properties.
C. Compounds are commonly found in nature.
D. Solids, liquids, and gases can form
compounds.
Agenda & Homework
•
•
•
•
Review bookwork from chapter 4
Review yellow molecule sheet
I have…who has…
Closing Assessment Probe
• Homework: Complete all online assignments
(Skills Tutor & Brain Pop – they are in
Synergy)
Pages 108 – 109, #1 - 15
1.
2.
3.
4.
5.
6.
7.
8.
Compound
Solubility
Suspension
Element
Nonmetal
Solute
C
B
9. C
10. B
11. C
12. A
13. C
14. A
15. Elements cannot be
separated into simpler
substances, but compounds
can by chemical means
Molecule Models
# of dif el # of dif
comp
1
0
1
0
1
0
# of mol
O2
H2
N2
# of
atoms
2
2
2
1
1
1
Is it
pure?
Y
Y
Y
NaCl
NH3
CH4
2
4
5
2
2
2
1
1
1
1
1
1
Y
Y
Y
H2O
CO2
3
3
2
2
1
1
1
1
Y
y
Warm Up 9/24/13
• Which of these statements about a hypothesis
is true?
• A. It is valuable only when proved accurate
• B. It may be valuable even when it turns out
inaccurate
• C. It is determined after a scientists
experiments
• D. It provides a basis for changing data
Warm Up 9/24/13
• Which of these statements about a hypothesis
is true?
• A. It is valuable only when proved accurate
NO, NICE BUT NOT NECESSARY
• B. It may be valuable even when it turns out
inaccurate
• C. It is determined after a scientists
experiments BEFORE
• D. It provides a basis for changing data NEVER
Agenda & Homework
• Footprint Mystery Directions – ALL except
– Science World magazine assignment
– Start putting together portfolio for choice board (I
will work with groups)
– Finish Circle Map (certain groups)
– Computer Work (certain people)
• Homework: SKILLS TUTOR (Math Section due
Friday)
Footprint Mystery
• Color footprints according to the key
• Analyze the data by putting it in the data table
• Answer questions in packet
To Finish (in order of priority)
• Testable Questions (list of 10 testable & non-testable)
• Background Research (six research questions on a
SPECIFIC topic – or- brochure)
• Observations & Inferences (fable AND observation)
• Data (powerpoint or Tidy Clean (27A & B)
• Drawing Conclusions (cartoon/go animate/437A & B
• Science World magazine assignment
• Poster (certain classes)
• Footprints Forensics activity
Warm Up 9/23/13
If two poisonous elements are combined
chemically, which of the following will be true of
the resulting compound?
A. The compound will be more poisonous than the
gases.
B. The compound will be as poisonous as the
gases.
C. The compound may or may not be poisonous.
D. The compound will not be poisonous.
Warm Up 9/23/13
If two poisonous elements are combined
chemically, which of the following will be true of
the resulting compound?
A. The compound will be more poisonous than the
gases.
B. The compound will be as poisonous as the
gases.
C. The compound may or may not be poisonous.
D. The compound will not be poisonous.
Agenda & Homework
•
•
•
•
Warm-Up
Review quiz
Review pink worksheet
I have…who has…?
• Homework: Complete all online assignments
Properties of Metals & Nonmetals
•
•
•
•
•
•
•
•
Metals –
Malleable
Lustrous
Ductile
Conductor
Metallic bonding
Gives away electrons
Making positive ions
•
•
•
•
•
•
Examples Zinc
Nickel
Gold
Titanium
Thallium
Properties of Metals & Nonmetals
•
•
•
•
•
•
Nonmetals –
Covalent bonding
Forms negative ions
Brittle
Nonconductor
Gaseous at room
temperature
• Receives electrons
•
•
•
•
•
•
Examples –
Selenium
Boron
Argon
Helium
Phosphorus
Mixtures, Compounds, Solutions
Mixtures
Milk
Compounds
Water
Coffee
Air
Ink
Blood
Sand
Carbon dioxide
Ammonia
Sugar
Alcohol
Table salt
Solutions
Rubbing
alcohol
Sugar water
Salt water
Soda
Humidity
Brass
Warm Up 9/23/13
• Which technological tool would be most
useful for storing and retrieving data?
• A. Balance
• B. Model
• C. Computer
• D. Beaker
Warm Up 9/23/13
• Which technological tool would be most
useful for storing and retrieving data?
• A. Balance
• B. Model
• C. Computer
• D. Beaker
Agenda & Homework
• Smart Board - variables
• Fransesco Redi’s Experiment
• Working on Drawing Conclusions choice
• Homework: Skills Tutor
• http://www.solpass.org/5s/Games/Scientific
MethodPlank.html
• http://faculty.washington.edu/chudler/experi.
html