Chat times for 2012/2013
Dr. Christe Ann McMenomy
Laboratory Requirements and Equipment
Labs are not required for completion of the course itself; you may do as many or as few as you like. However, you must complete of 20 of the lab assignments to receive lab credit for the course. If you are planning to take the AP exam, certain labs are required for consideration of the course for AP credit. All labs for credit must be completed by the close of the school year in June.
Many lab assignments will be available from the web site at the start of the session; several will be added through the course of the year. Most labs will be associated with specific topics, and you are encouraged to complete the lab and send in the report during during the assignment period. You make make arrangements to complete the other labs out of sequence if you have trouble obtaining equipment.
For safety reasons, both you and your parents must read the safety procedures before starting the lab sequence. Your parents must sign and send a copy of the lab permission letter to me before I can accept any lab reports from you for credit.
In addition to the equipment listed below, many labs will use common household items, such as paper, pens, rulers, cups or jars, food samples, cleaning solutions, plastic bags, etc. These will be listed in the equipment section of the individual labs. In addition to equipment, the field labs require that you have an outdoor area which you can study throughout the year.
This equipment list includes standard chemistry lab equipment for a serious home chemistry lab; we will also be using more generally available household items for many of the labs. Please note that it is not necessary to purchase all the equipment below for this course. Many pieces have perfectly adequate substitutes in items you probably have in your house already. You will need to calibrate appropriately all substitute equipment. You may use any convenient units so long as you are consistent and willing to do the math to convert to SI (metric) units when necessary. When substituting household items for standard equipment, make certain that the substitute meets safety requirements: glass should be used instead of plastic, to avoid problems with acids or solvents, and any container used for heating should be rated to withstand the heat.
The following chemicals can be found around the house or purchased at your local grocery or drug store.
|Acetic acid||CH3COOH||White vinegar||Grocery|
|Acetyl salicylic acid||====||Aspirin||Grocery|
|Aluminum sulfate||Al2(SO4)3||Aluminum Alum||Drug store|
|Ammonium chloride||NH4Cl||Sal Ammoniac||Drug store|
|Boric acid||H3Bo3||Boric acid eye wash||Drug store|
|Calcium chloride||CaCl2||Ice melt||Hardware|
|Calcium carbonate||CaCO3||Chalk||Drug store|
|Ethyl alcohol||C2H5OH||Ethyl alcohol||Drug store|
|Hydrogen peroxide||H2 O2||Peroxide||Drug store (3% solution)|
|Isopropyl alcohol||(CH3)2 CHOH||Rubbing alcohol||Drug store (70% or 99%)|
|Magnesium sulfate||MgSO * 7H2O4||Epsom salts||Drug store|
|Sodium bicarbonate||NaHCO3||Baking soda||Grocery|
|Sodium carbonate||Na2HCO3||Washing soda||Grocery|
|Sodium hypochlorate||NaOCl||Chlorine bleach||Grocery|
Review this list frequently. If you have any questions about sources or substitutes for equipment, contact mebefore continuing.
Lab equipment may be borrowed from schools or purchased. Sometimes local college bookstores or medical schools carry dissection kits; staining kits and other supplies are often available from educational toy stores and science museums. You may also want to check my growing list of mail order suppliers.
© 2012,2013 This course is offered through Scholars Online, a non-profit organization supporting classical Christian education through Internet-based courses. Permission to copy course content (lessons and labs) for personal study is granted to students currently or formerly enrolled in the course through Scholars Online. Reproduction for any other purpose, without the express written consent of the author, is prohibited.