There are two versions of each lab, one with a ten-question conclusion and one with directions for a full lab report. This way the teacher has the option! Each lab is two pages to allow for one two-sided handout.
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“[S]traight forward, to the point, using household chemicals…this is the lab book for you.
I teach high school chemistry and this is exactly what [I] was looking for. Labs included simple household chemicals that could be easily found. Nice format, easy to follow along procedures, and touches on every topic of our chemistry curriculum.”
You can buy this lab book for $23 at amazon.com or lulu.com. It will take 1-2 weeks to get to you -- Order Now. It’s a great resource!
*Some of you have already purchased my lab book – be sure to check out Page 141 !
“Firefighters say an explosion occurred at a chemical plant in Hood County, Texas [on March 15, 2018], CBS Dallas-Fort Worth reports. One person was missing and another was badly burned in the blast, which occurred at Tri-Chem Industries. …
At least four ambulances responded to the scene. Authorities are advising the public to go to a hospital if they came into contact with smoke from the explosion. …
Cresson[, TX] Mayor Bob Cornett said the liquid chemical plant manufactures products like soap and acid. He said there has been a massive fire department response to the explosion. “
“A part of State Highway 171 was closed because of the fire. Plumes of black smoke could be seen coming from the plant, which appeared to belong to Tri-Chem Industries, which is responsible for taking chemicals off railways, repackaging them and sending them back out. The company did not immediately comment about the incident.
Hood County Sheriff's Lt. Johnny Rose said fertilizers were not stored at this location.”
“Investigators believe a worker dragging his foot along the floor while chemicals were being mixed sparked Thursday’s explosion. That worker is hospitalized with critical burns. Another worker was treated for less severe injuries.”
I wonder if the worker was supposed to wear boots that prevent static discharge.
Several companies produce footwear appropriate for chemical/industrial workplaces. For example,
Some background on Safety Shoes:
“The 3 distinct types of conductivity found in Safety Shoes are Electrical Hazard (EH), Static Dissipative (SD), and Conductive (CD). These are tested according to the ASTM (American Society of Testing and Materials) standards F2412-05 and F2413-05.
EH Electrical Hazard Safety Shoes
The differences between these classifications of Safety Shoes are that Electrical Hazard shoes are designed to impede (reduce significantly) the flow of electricity through the shoe and to ground, thereby reducing the possibility of electrocution. Electrical Hazard Safety Shoes will have an “EH” clearly visible on the ASTM label sewn inside the safety shoes. (ASTM F2413-05 Sec. 184.108.40.206) Only safety shoes can have the Electrical Hazard designation. (ASTM F2413-05 Sec. 5.5.1),
IMPORTANT: Electrical Hazard shoes are not designed to be the primary source of protection in an Electrical Hazard environment. They are designed to be only a secondary source of protection in an Electrical Hazard environment, and that is clearly stated in the ASTM standards for Electrical Hazard Safety Shoes. (ASTM F2413-05 Sec. 5.5.4 & Sec 5.5.2),
SD Static Dissipating Safety Shoes and non-Safety Shoes
Static Dissipating Safety Shoes and Soft-Toe shoes are designed to dissipate (reduce) the amount of static electricity build-up on your body. Unlike Electrical Hazard Safety Shoes, Static Dissipating Shoes can be either safety toe or non-safety (or soft-toe). Static Dissipating shoes actually conduct static electricity through the linings and insole, cement, and outsole and into ground. Static Dissipating Safety Shoes and non-Safety Shoes have a “SD” clearly visible on the ASTM label sewn inside the safety shoes. (ASTM F2413-05 Sec. 220.127.116.11),
To accomplish Static Dissipating environments consistently, several things must be controlled. First, you cannot add any kind of insole to the shoe, except a specially designed Static Dissipating insole. If a non-Static Dissipating insole is added to the shoe, Static Electricity will not flow through the insole. When the insole becomes non-conductive; the shoe will not Dissipate Static Electricity. Also, the floor and sole of the shoe must remain clean and free of dust and other foreign matter to maintain good contact between the sole and the floor. This allows the Static Electricity to Dissipate, or flow through the sole and into ground. (This assumes that floor is “grounded” and Static Electricity will flow through to the floor material.)
Static Dissipating Shoes and Safety Shoes are worn in mainly two types of environments: Computer component handling facilities and nuisance Static Electricity environments, like plants where the process and machinery create a large Static Electricity field in the manufacturing process. Typically, this field creates a build-up of static electricity on employees working in the environment, and then discharges when the employee touches metal that goes to ground or has a neutral or less charge than the body has. This Static Discharge “shocks” the person, creating momentary discomfort and annoyance. Static Dissipating shoes can help this situation, but the floor, mats, and machinery, also need to be grounded to reduce the Static Electricity field in the environment.
Conductive Safety Shoes
Conductive Safety Shoes are designed to “conduct” Static Electricity through the shoes and into ground. Conductive Safety Shoes are similar to Static Dissipating Safety Shoes because both are designed to dissipate Static Electricity. Conductive Safety Shoes (CD) Dissipate Static Electricity much faster and more completely than Static Dissipating Safety Shoes (SD). The reason is that Conductive Safety Shoes are worn in environments that are highly flammable and explosive, which means that reducing the possibility of a Static Spark or Discharge is critical to the safety of not only the employee, but the other employees in the immediate area and even citizens in the vicinity of the explosive area. According to the ASTM Standard, Conductive (CD rated) Shoes must be Safety Shoes (ASTM F2413-05 Sec. 5.4.1), and the Conductive Safety Shoes have a “CD” clearly visible on the ASTM label sewn inside the safety shoes. (ASTM F2413-05 Sec. 18.104.22.168),
Important: Because Conductive Safety Shoes (CD) conduct electricity, employees wearing these shoes must avoid wearing Conductive Safety Shoes in Electrical Hazard (EH) environments. Obviously, this could be a very dangerous situation. (ASTM F2413-05 Sec. 22.214.171.124)”
This incident is a reminder to follow safety guidelines at all times in the chemistry laboratory.
Other blog posts related to this topic:
01/26/2018 Current Event -- Oil Drill Site Explosion
11/25/2014 Predicting Products of a Combustion
Reaction (5th Rxn Type)
07/13/2014 Chemistry Laboratory Safety
01/22/2014 Combustion of a Hydrocarbon
*This Blog contains several entries that would be helpful to your chemistry classroom. Check out the Topic List to help you to find past Blog entries.
Also, Write To Me about your successes, challenges, or questions in the Chemistry Classroom.
Remember, buying a copy of the lab book Chemistry on a Budget can be very useful to your Chemistry classroom with labs and class article ideas.
Have a great weekend!