Chemical and Physical Changes Lab Chemistry GT 9212215 Drill Look at the line graphed over there What property does its slope represent Calculate the slope HW Chem amp Phys ID: 467254
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Unit 2 QuizChemical and Physical Changes Lab
Chemistry GT 9/21-22/15Slide2
Drill
Look at the line graphed over there
What property does its slope represent?Calculate the slope.HW: Chem & Phys Changes Lab QuestionsSlide3
Objectives
IWBAT
Classify matter and explain how matter may change.
Differentiate between chemical and physical changes and propertiesCalculate densitySummarize and apply the Law of Conservation of EnergyFind or calculate atomic mass, atomic number, number of protons, neutrons, and electrons, charge, etc. for any atomSlide4
Unit 2 Quiz
You need:
Pen or pencil
CalculatorYou will have 20 minutes to do the quiz.Pick up Chemical and Physical Changes Lab when done.Slide5
Lab Notes
Experiment:
The test tube clamp is the small one. Tilt the test tube when heating.
DO NOT HEAT. Use the cleanest test tube. Use the smaller piece of Mg. Don’t bother with measurement—just cover the Mg with HCl.NO TEST TUBE. Use the larger piece of Mg. Use the silver tongs and place the Mg near the top of the light blue cone of flame.Slide6
More lab notes
Use ONLY a pinch of table salt. Make sure you DON’T use sugar.
Do NOT breathe the smoke. This will destroy the test-tube—when it’s cool, throw it away in the broken glass container.
Use the cloudiest test tube. DO NOT HEAT.Slide7
Lab Safety & Notes
Write in pen!
Goggles on at
all timesHair tied or pulled backNo food, drink, or gum in the labCAUTION: DO NOT STARE DIRECTLY AT THE LIGHT GIVEN OFF BY THE MAGNESIUM RIBBON
CAUTION: Metal close to the burner flame can be very hot – DO NOT
TOUCHSlide8
Chemical & Physical Changes LAB
Work through the steps of the lab.
Today is the day for the lab! We will NOT have time next class, so work quickly, efficiently and safely!Slide9
Lab Partners-4A
Abrams, Alex C.
Hayes, Harrison F.
Acker, Benjamin P.
Irby, Erik D.
Atkinson, Sydney L.
Keh, Samuel J.
Austin, Jacob A.
Kim, Selim
Blanco, Andrew J.
Lawrence, Destiny C.
Braimoh, Eunice I.
Majid, Mariam
Bundy, Nina A.
Montanaro, Kaden
Byers, Frankie T.
Patel, Jainik S.
Chalfant, Andrew N.
Rahman, Ayad A.
Chaudry, Salma F.
Regal, Sarah L.
Farrell, Avery A.
Stern, Emily R.
Gabriel, Nathan R.
Weaver, Samuel J.
Gildersleeve, Ryan N.
Wieprecht, Tesia R.
Havrilko, Ava H. Slide10
Lab partners – 4B
Abdou
, John A.
McLane, Catheryn C.
Acker, Natalie R.
Mumper, Grace J.
Kavalsky
, Hanna L.
Nilles, Andrew I.
Chen, Yuxin
Puhl, Anthony D.
Crisco, Leah A.
Raskin
, Sasha E.
Desai, Shriya R.
Samuels, Andrew R.
Goldberg, Aaron R.
Simmons, Ryan T.
Gonzalez, Miguel A.
Stokes, Emily F.
Hawkins, Emily C.
Withers,
Ariana
P.
Kukata
,
SumanthSlide11
Disposal/Clean-Up
The cloudy waste goes into a waste container.
Do NOT put the wood or metal into the sink
Wood and metal go into trash, once they are cool.The test tube with the sugar will get ruined after it is heatedPlace it into the cardboard box labeled GLASS once it cools offSlide12
Iodine—heating & cooling
http://www.youtube.com/watch?v=4fAOI6BeMZY
~1:25-2:30
This is a time-lapse video, so it is much faster than it would have happened in real life.Work on the questions for a few minutes.Slide13
Starting Unit 3!
What is an
atom?
ion?isotope?proton?neutron?electron?What does all this mean?? Let’s do some Atomic Structure notesSlide14
Closure
What is the most common isotope of mercury?
How many protons, neutrons, and electrons would a neutral atom of “standard” mercury have?