tue 8/26 1.when must you wear safety glasses in the lab? anytime you use: chemicals heat glassware
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Tue 8/261. When must you wear safety glasses in the lab?Anytime you use:ChemicalsHeatGlassware
Wed 8/27
2. If you find something is broken in the lab, what should you do?
Tell your teacher
Thur 8/283. Explain the science procedure.Wafting - do not directly smell a substance.
Fri 8/294. Is it ok to enter the chemical supply storage
room if you run out of a chemical?Never
Tue 9/2
5. What is science? P. 7Is the investigation and exploration of natural
events.
Wed 9/3
6. What are the 3 branches of science? Use p. 9 ( the pages you tore out) Earth scienceLife sciencePhysical Science
Thur 9/4
7. What are the 4 possible ways you could test a hypothesis? P. 10-11
Design an experimentMake a modelGather evidence or researchCollect data/ record obsevations
Fri 9/58. What are the 6 steps of scientific inquiry? P. 15QuestionsHypothesize and PredictTest Hypothesis (experiments)Analyze resultsDraw conclusionsCommunicate results
Mon 9/8
9. What should you do before stating a hypothesis?p10
Make observationsState a problemGather information
Wed 9/10
10. What was the independent variable and dependant variable in the paper towel lab?
Independent variable – different brands of paper towels
Dependant variable - water absorbed
Th u r 9 /1 1
1 11. Jose saw bats catching insects after dark. He asked, “How do bats find the insects in the dark?”What step of the scientific method is this?
P problem
Fri 9/1212. Describe the independent and dependant
variable.IV – color of lightDV – plant growth
Mon 9/15
13. What rule(s)do you see for an element symbol?
Na not NAC not c
Wed 9/1714.
Wed 9/17
15. What is an element?A substance that can not be broken down into any
other substance.
Thur 9/18
16.What is a Compound? When two or more elements chemically combine, a
compound is formed. ( draw the models below)
HHydrogen
Warm up
Mon 9/22
1.
a. Mixture of 2 compoundsb. 1 compoundc. 1 Elementd. Mixture of element and compound e. Mixture of 2 elements
Tue 9/23
2. Is air an element, compound or mixture?mixture
Thur 9/253. Lucky Charms is
a(an) _________.ElementCompoundMixture
Mon 9/29
4. Is salt water an element, compound, or mixture?Mixture of H2O and NaCl (salt)
Tue 9/305. When 2 liquids form a solid it’s called a _______________. Precipitate / this is a sign of a chemical reaction
Wed 10/01
5. What is the importance of the stair step line?Separates metalloids from metals and nonmetals
Thur 10/26. What is energy?The ability to cause change.
Fri 10/37. What determines the amount of kinetic energy
a moving object has? P. 207Speed and Mass
Friday
tear out p. 204 - 214 5.5cmVoc.EnergyKinetic energyPotential energyWorkMechanical energySound energyThermal energyElectric energyRadiant energyNuclear energy
Define and draw something
Potential energy
Work
Mechanical Energy
Energy
Kinetic Energy
Mon 10/06
8. How are elements, compounds, mixtures identified?
Elements – pure substance (homogenous) sameCompounds – two elements chemically joined Mixture - E and C ( solution )Homogenous some
are Heterogenous.
Thur 10/99. What happens when chemical bonds are
broken ?Energy is released HeatLight
• Draw a model of salt water. Be sure to make a key for the elements.
Draw on the front of your bubble sheet
Element symbol – know the rulesElement – definition Atmosphere – mix of elements and compounds, can
the atm be separatedCompound – definitionBox of cereal – mixture can be separatedSalt NaCl – compoundH2SO4 - how many different elements2 liquids form a solid – chemical change , precipitateNonmetal – no luster , not malleable, insulatorMetalloid – semi conductorMetal – conductor, luster metallic, malleable, ductile
Evidence of a chemical changeSmokeBurning RustHeatCold FizzBubbles Solid forms
Tue 9/30
1. Complete p. 60 from text, front and use text to answer. #4 omit
2. Complete model cut out , turn in3. Week 6 test review cw hw
Page 2 Define the word
compound and draw a picture of the compound Nitrous Oxide.p. 46. N2O Draw the square 6cm x 5cm
Page 3Copy the list of elements and
compounds.Al Li2O H AgO 2 Fe2O3 H2O2
CO2 He CuO H2OWrite element or compound next to each.
If a compound give how many atoms of each.
What did you notice about the number in a formula for a compound?
Page Two
• Define the word compound and draw a picture of the compound Nitrous Oxide.p. 46. N2O Draw the square 6cm x 5cm
• Page Three Copy the list of elements and compounds.Al Li2O H
AgO 2 Fe2O3 H2O2
HClCO2 He CuO H2O
Write element or compound next to each.
If a compound give how many atoms of each.
What did you notice about the number in a formula for a compound
Page ThreeCopy the list of elements and compounds.Al Li2O H AgO 2 Fe2O3H2O2 HClCO2 He CuO H2O
Write element or compound next to each.
If a compound give how many atoms of each.
What did you notice about the number in a formula for a compound?
Mon 9/15
13.
Scientific InquiryObservationInferenceHypothesisPredictionScientific TheoryScientific Law
VariableDependant variableIndependent variable
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