Select Page

### SUMMER INSTITUTE – Module 1 – Measurement and Sig Figs

: _______________________________________________________________________________________________________________________________________                                       Jump to Activity 1,  Activity 2,  Activity 3,  Activity 4,  Activity 5,  Activity 6, Activity 7,  Module Test

Module 1 – Measurement and Sig Figs

*1st Module Due: July 1st (before July 4th weekend) : 5 hours

Every unit will be accompanied by written notes, lectures, and assignments.  Do your best to read and complete the activities below in a timely fashion.  The assessments for each Module will be listed before you begin to help you manage your time accordingly.

Notes on Module 1 –

Module 1 Notes – pgs 1-15.pdf

Activity 1:  SKILL :  Metric System and Conversion Between the same metric Units
Notes: pages 1 – 3

1: Watch the lectures below on the conversion between the units of the metric system.
2: Complete the worksheet that the video reviews.
3: Check the key for the worksheet

metric conversions 1.pdf (worksheet 1)

metric conversions 1 key.pdf

1 : Metric Conversions:

2 : Dimensional Analysis:  This lecture reviews the bottom question of the worksheet.  It uses dimensional                                                          Analysis and important skill we will use all year.

Activity 2:  SKILL : Dimensional Analysis – Conversions between different units.
Notes: pages 3 – 4

1: View the Lecture below and complete 1- 9 on worksheet 2 (metric conversions 2 step.pdf)
View Lecture 1.2 and after watching me do a few problems stop the video to complete the next couple of problems. Review your completed problems with me on the video. Use your discretion in terms of which problems to watch me complete and which ones you should try.  The video reviews questions 1-9.  You may use the posted key to review all questions.
There is no form with this video.

I did make a mistake on this video on question 1 and 2.  My explanation is correct but my math is poor. My key posted below is correct.

metric conversions 2 step.pdf (worksheet 2)

metric conversions 2 step key.pdf

1 : 2 step metric conversions

Activity 3:  SKILL: How to measure and what is means in terms of Significant Figures, accuracy and                                              precision.
Notes: pages 3 – 4

1: View Lecture 1.3a on the basics of measurement with “the unit of grodski” and how numbers are born!!
The numbers from measurement devices are Significant Figures!!

2: View Lecture 1.3 and complete the worksheet 3 below.

Measurement ditto 1 0910.pdf (worksheet 3)

Measurement ditto 1 key.pdf

1 : The Basics of Measurements

2 : How to measure and the basics of measurement

Activity 4:  SKILL: How Significant Figures are used in calculations (how we round in calculations).
Notes: pages 6,7,8 and 9

1: View Lecture 1.4 on how we deal with numbers from measurement devices (significant figures) when we do not            know what the measurement device is and how we deal with them in calculations and how to round in                          calculations.  *We did not deal with this in our calculations in lab in AP BIO but we should of.  We cannot calculate      numbers that come from number devices with considering this concept.

2: In Worksheet 4 (sig fig ditto1.pdf) please complete A-V in the Significant Figure(1st) section

and A,B,C in the addition/subtraction (2nd) section and A,B,C in the Multiplication (3rd) Section only. Review with key.

sig fig ditto1.pdf (Worksheet 4 )

sig fig ditto1 key.pdf

1 : Lecture 1.4 – Significant Figures Explained

Activity 5:  SKILL: Conversions with correct rounding (significant figures in mind).
Notes: pages 6,7,8 and 9

1: Watch lecture 1.4a and redo worksheet 4 and review with the New KEY below:
*Question 1 answer is 30 cm not 20!

metric conversions 2 step key ROUNDing.pdf

2: Complete the Form ( 1 math question – immediate feedback email) This is only for practice:

When you are done with this form I will send or post the written key.

Click to view the Key to The Cylinder Question.

1 : Lecture 1.4a: How we round with significant figures.

2 : Practice Test Form 1: (It will send you your submission graded automatically) – make sure your        email is correct when submitting in the form.

Activity 6:  Virtual Lab – Density of Solids – SKILL – Application of all skills in Module 1.
Notes: pages 10

– Percent Error, Calculations, Conversions, units, and Sig Figs.

*On page 10 of my notes I have an error:  Percent Error should look like:
**If the measured value is smaller than the accepted value you can get a negative percent error. (it juts means that you are below the known value. Also there are no sig figs in a percent error as there are no units (because they would cancel).

This is a Lab that we would do in Honors Chemistry or Regents Chemistry to review all of the concepts taught in this module-

We will do it virtually:
You will need the following lab packet.

LAB 1 Density of Solids.pdf

1: Using the lab above and the video below, complete the lab.
Please keep this lab as I will collect in September.

1 : Density of Solids Lab:

Written Instructions:

Objectives:

1: To measure the dimensions of 4 objects and calculate each objects volume.
2: To measure the mass of the 4 objects and then calculate the density of the 4 objects (using the volume              from objective 1)
3: Determine the composition of the metals (by using known values of densities) and then
determine the accuracy of your results (perform percent error calculations).

*see the formula above

4: PLEASE OMIT THE GRAPH PART OF THE LAB!

*In this lab we will measure the dimensions of 4 objects and then calculate each object’s density.
We will measure mass with a triple beam balance and determine the volume of each object (a cube, rectangle, and cylinder)  using the each objects volume formula, which will be given.  From the measurements (birth of numbers) we obtain significant numbers that we will have to round according to the concepts learned in this module to attain a density (mass/volume).  We will be using cubic centimeters which is the same volume as a milliliter (page 10 – notes).

We will then identify each metal based on their known density (from a list) and perform a percent error calculation (notes – page 10) to see how close we are to the known value (a measure of accuracy or precision?).

Here is an example of a possible data from one object:

Accepted Values:
Try to determine the composition of the object by comparing your calculated density with the list below.  Try to find the density below that is closest to your experimental value to determine composition of the Substance.

Write a Lab Conclusion:  Please view this page for instructions on how to write a lab conclusion:
I will physically collect this Lab in SEPTEMBER 1st  Our First Day of Classes!

Activity 7:  Virtual Lab – Density  of Liquids – Skill: Applications of all skills from Module 1
especially rounding.

1:  Please view the following video below and complete the lab with the video.
2:  I will physically collect this lab.

LAB 2 Density of Liquids-coke.pdf

Objectives:

1: To Determine the density of the Coke, Diet Coke, and water.

2: To calculate the mass sugar in Coke.

3: To determine the accuracy of the results (of the sugar in a can coke).

*The premise with this lab is that Diet Coke and Regular Coke have the same the ingredients except for the sugar.  We are really testing this premise with this lab.

1 : Density of liquids Lab:

2 : Density of  Lab – Conclusion questions instructions:

Write a Lab Conclusion:  Please view this page for instructions on how to write a lab conclusion. I will physically collect this Lab in SEPTEMBER 1st  Our First Day of Classes!

Module Test 1 available below

You must have completed all assignments above first before you begin your module Test 1.

Keep the completed labs in safe place as I will collect them in September!
There will be no google doc sent for you to post them as I fell you have enough to do.

No Completed Labs. No Dice. No Rice. No lice. No mice. Not Nice.

Module Test 1: (It will send you your submission graded automatically) – make sure your email is correct when submitting in the form.

>

END OF MODULE 1:

Please Enjoy the 4th of July weekend!!!

NO chemistry work allowed!!

However, when you see fireworks please think that the color that you are seeing is tied to electrons jumping back from their high energy state (excited state)  toward their lower energy ground state.  In Photosynthesis, we used the high energy electrons (farther from nucleus) that we created by absorbing light to power the proton motor force (pump H+ against concentration gradients) or active transport.  The light absorbed excited electrons that were initially in a lower energy state in water.  This means that electrons in water moved away from the positive nucleus with the absorption of light energy.  These high energy electrons would “jump back” to their lower energy states if they were not used in photosynthesis.  This means that plants would look red if the energy was not used to build organic molecules in photosynthesis!

In fireworks, the different colors are associated with different energy levels (different size electron leaps) backward.  The larger the leap the larger amount energy released (the blue end of spectrum).The smaller the leap the smaller amount of energy released  (the red end of the spectrum).

Sorry if I ruined the fireworks fun.

This was shot at Riverhead Raceway!!!