Unit 1 - Classification of Matter
Read more about distillation: http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/rocks/fuelsrev2.shtml
Your parents used a form of chromatography, too, most likely! (A little more complicated but similar concept). https://www.youtube.com/watch?v=aOfWTscU8YM
9/19 - Turn in Chromatography Lab
Distillation and Fractional Distillation -- separating mixtures
Intro to fractional distillation: https://www.youtube.com/watch?v=KCs1F_44dy4
Learning Objectives for this unit:
Classification of matter:
Classify matter as either a mixture or pure substance.
Classify mixtures as heterogeneous or homogenous.
Classify pure substances as elements or compounds.
Separation of Matter:
Describe many different ways in which mixtures can be separated and state which property of matter each separation method is dependent on (see class notes for list of different ways).
Explain how chromatography is conducted and measured using appropriate vocabulary terms (stationary phase, mobile phase, solute, solvent, Rf factor.)
Describe one method for separating a pure substance, specifically a compound (electrolysis).
Give real world examples of uses of separation techniques including centrifuging, chromatography, distillation, fractional distillation, and electrolysis.
Coming up...
Energy and Matter: Describe how energy affects the states of matter in terms of phase changes - exothermic, endothermic.
Identifiying matter: Define intensive and extensive properties -and explain which is more useful for identifying substances.
Quantitative goals:
Density calculations - be able to find X when given two of the three: mass, volume, or density.
Identify the correct number of significant figures in a calculation.
See below for Daily Calendar:
8/29 - Intro to Lab Safety
Crash Course: https://www.youtube.com/watch?v=VRWRmIEHr3A
8/30
Accident at Jefferson High https://www.youtube.com/watch?v=PxyDImUYo14
How to use a Bunsen burner: https://www.youtube.com/watch?v=ZmtbMKJLUJo
Chemistry Safety Review (see word document "safety ws" attachment below)
9/1 - set up lab drawers, safety quiz and disappearing penny
9/2 - penny lab part 1 &2A &2B
9/6. Penny Lab part 2C and 3 & begin classification of matter
9/7 - Penny Lab and Classification of Matter WS.
9/8 - Finish and turn in penny lab & finish Classification of Matter WS
9/9 -- NOTES on CLASSIFICATION OF MATTER (see powerpoint below)
9/12 - Start Chromatography of Skittles Lab
9/13 - unpack lab materials, go over HM from 9/8, return and discuss lab
9/15 Finish Chromatography of Skittles lab (due MONDAY)
How does chromatography work and how do you measure Rf values? https://www.youtube.com/watch?v=J8r8hN05xXk
9/19 What are some practical uses of chromatography and distillation?
Video 1 - CSI - What was chromatography used for in this clip? https://www.youtube.com/watch?v=zEXO6TxaJTI
9/20 - Start Electrolysis of water. Introduce electrolysis terminology.
9/22 - Discuss Electrolysis of water lab. QUIZ on Classification of Matter notes!
Make a model of electrolysis vocabulary words and practice in groups.
9/23 - Begin Density w/ notes , correct first sig figs practice
9/26 - Monday - Mentioned changing sig fig practice #1 so that your answer reflects the number of significant figures you found in #2 (really #2 should come before #1). Returned chromatography labs. Started Density Lab - determining the metal by finding the density. Make excel graph - gave out sheet on how to make good graphs and data tables.
9/27 - Discussed chromatography lab. Notes on States of Matter - melting points and boiling point graphs. Used laptops to graph data from the lab on Excel.
9/29 - Turn in density lab (individual lab - group graph). Optional to make your own graph if your group's graph did not follow directions on how to make your own graph (but I don't want a second group graph - I want each of you thinking for yourselves this time as the group effort was maybe not more productive in that case.)
Significant Figures and Unit Conversion Video:
Show second part of scientific notation practice - how to add or multiple sig figs. Assign questions 3 & 4 for homework due Friday. Short Quiz Friday over Sig figs and scientific notation!