Unit 1

We will begin the year reviewing lab safety and lab equipment.  Next we will explore how chemistry affects your life by exploring physical and chemical changes.  Then we will review how to measure correctly and apply significant figures.  Finally, we will use dimensional analysis to change the units of collected data. We will cover these concepts integrating real life lab applications such as hydrogen production, consumer testing, etc.

Group A:  M, T with me and W, Th, F are virtual
Group B:  M, T, W are virtual and Th, F are with me

 Sept. 1 -8
Welcome to class activities, building virtual teams, and getting set up for your virtual and in person classroom experience.   

Items needed:  Notes and Objectives:  Students may pick up hard copies of the notepacket, learning objective, problem sets, etc. in class or print them out at home.

 

• Unit 1 Note packet  The notepacket will be used by Mrs. Lange in videos to teach the content in the course.  I will have video links to YouTube of the lectures and I will also have video links to demonstrations and lab exersizes so that you can "see" the material we are learning.
• Unit 1 Learning targets/objectives :  These are the learning targets that we will be covering during unit 1.
• Power Point of Unit 1 Notes (slides 1-6)-the PowerPoint alligns with the notepacket and allows you to pull notes you may have missed from videos or demonstrations.

Welcome to chemistry and lab safety video:


Unit 1 Chapter 1 notes:  What is chemistry?



Problem Set 1-submit all assignments Canvas please. 

Option 1: You can open the document on Canvas and fill it in by typing.  Then hit submit.
Option 2:  You can submit it externally.  Fill out a hard copy of the document and then send me the doc.  It is easiest to take a picture and submit it in canvas.  Just make sure it is right side up and I can see the entire document.  If it has two sides, you will need a picture of both sides.  
Note:  I will post answers to the worksheets after the due date.  I will also go over any of the questions you may have in class.
 

• September 4 and 8
• We will be covering the notes unit 1 chapter 2 notes on Matter and Change.  This will cover states of matter, pure substances vs. mixtures,  physical and chemical properties vs changes, and conservation of mass.  We will also be doing a lab virtual lab activity on these items.
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• Unit 1 Note packet-you will need this to take notes while you watch the videos.  If you miss of the notes or want a more detailed explanation, refer to the supporting Power Point of Unit 1 Notes-slides 7-19.
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Video on solids, liquids and gases

Video on pure substances vs mixtures

Video with definitions of physical and chemical changes properties

Video demonstration examples with interactive self quiz on phyical and chemical changes and properties
    Part 1

    Part 2

    Answers to the interactive self quiz

Video on Conservation of Mass


*** reminder to hit the PowerPoint if you missed any notes!!

Assignments: 
1,  Problem Set 2  -submit all assignments Canvas please. 

Option 1: You can open the document on Canvas and fill it in by typing.  Then hit submit.
Option 2:  You can submit it externally.  Fill out a hard copy of the document and then send me the doc.  It is easiest to take a picture and submit it in canvas.  Just make sure it is right side up and I can see the entire document.  If it has two sides, you will need a picture of both sides.  
Note:  I will post answers to the worksheets after the due date.  I will also go over any of the questions you may have in class.

Sept 10-15
2.  Mass and change lab:  Please open the lab link.  For each of six stations you will need to do the following.
1.  Read the video link title.  According to the defininition of conservation of mass, do you expect the mass to change in this video:  Write Y for yes or N for no.
2.  Watch the video
3.   State if this is a physical or chemical change (Write P or C)
4.   Write down observation (what do you see or hear).
5.  Draw how the substance looks before and how the substance looks after. (more tightly packed, more loosely packed, are they pure (all x's), are they a compound (like x-o), are they mixing (a physical change x  o  o x ramdomly scattered and not hooked) are they making new bonds (a chemical change  like x-0 becoming x-$ or x and $ becoming x-$).
6.  Record the data observed
****Did they weigh all items before and after?  
7.  Does this follow Conservation of Mass?  If not-what mass is missing or how did it gain mass???  (This is you best educated guess!!)

Do this for all 6 experiments.  Then fill out the summary using checks and answer the 3 questions.  Please submit in Canvas.
 

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Week 3:  This week we will cover Chapter 3 of unit 1.  We will review the metric measuring tools, units of measurements, and how to measure scientifically.  Then we will investigate recorded data to determine what and how many digits have been measured.  This is what we refer to as significant figures-measured numbers.  Next, we will learn how to round measured numbers or sig. figs.  Finally we will learn how to add, subtract, multiply, and divide measured numbers or sig. figs. All of these will be applied to the measurement lab.

Unit 1 Note packet-you will need this to take notes while you watch the videos.  If you miss of the notes or want a more detailed explanation, refer to the supporting Power Point of Unit 1 Notes-slides 20-38.

Video with notes on  the metric system, measurement terms, and devices.
 

Measurement Activity video:  Please use the space in your notepacket to record your answers
    Part 1:  Using rulers A, B, C
    Part 1 answers: 

    Part 2:  Using thermometers and graduates


Video:  Rules of Significant Figures (How to determine if a number was measured vs. being a place holder.)


Adding, Subtracting, and Rounding sig. figs. (How to add and subtract measured numbers.) 
Multiplying, dividing and rounding sig. figs.  (How to multiply and divide measured numbers.)



Density video:  Density is how much matter is packed into a volume.  The more matter in a volume, the heavier it is (golf ball) vs the less matter packed into a volume the lighter it is (ping pong ball-filled with air)


Assignments:
Problem Set 3:  This problems set includes all of the Unit 1 Chapter 3 material.  

Sept. 17,18, 21, 22

Measurement Lab:  In this lab you must look at a measuring device, determine the scale (the smallest markings) and then estimate one digit more accurate then the scale.  (If the scales goes up by ones, you estimate to the tenths or .1) Record you measurement with the correct units.  Then identify the amount of significant figures in your measurement or the amount of measured numbers. (Example:  2.50 grams has 3 measured numbers or 3 sig. figs.)

Measurement lab # 1-8
 
 
Measurement lab # 9-14




Measurement lab #15-16

When you are done with page 1 of the lab, check your answers with your lab group.  Then go to page two of the lab and do the significant figure calculations as a group.  Submit your lab in Canvas when finished.

Answers to page 1 of measurement lab

Other Sig. Fig.Resources and practice:

• Significant figure rules and video with examples
• Practice using the rules interactive sheet 1
• Significant figure calculations explained
• How to round significant figure calculations
• Practice rounding 
• Significant figures and scientific notation practice  worksheet 2
• Practice sig. fig. interactive worksheet 3 
• Practice sig. fig interactive worksheet 4 (Great review of all rules!)
• One more time-if you need the practice-interactive worksheet 5

Introduction to Dimensional Analysis or unit conversion problems:

Unit 1 Note packet-you will need this to take notes while you watch the videos.  If you miss of the notes or want a more detailed explanation, refer to the supporting Power Point of Unit 1 Notes-slides 39-end.

Please show all 5 steps when doing dimensional Analysis for all problems assigned
  1.  Known
  2.  Unknown
  3.  Conversion (write as a fraction)  1 foot
                                                                 12 inches
  4.  Set up problem:
        --------------l-------------  =
   5.  Answer rounded for sig. figs. and units

Here is a video showing how to do one and two step conversions using both conversion charts.  The second example explains the metric to metric chart again.



Here is a sample of another 2 step problem, a top and bottom problem and a squared conversion problem.

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 How to tutorial: shows how to do every type of problem- one step, two step, top and bottom, etc.