Science Room F211 Mr Reid Safety 1st - However, what is the worst that could happen in F211. Our campus motto is be here, be safe, be respectful, be responsible. in the science lab, a student must be the embodiment of this spirit. One must be aware of what is happening during an activity and how their actions affect those around them. However before we go further into the workings of this room and the content you will study, let us take a quick look at how to protect yourself from the most dangerous activities you may be engaged. Lab safety generally involves a few basic principles: • • • • Know what you are working with. Come prepared Think about what you are doing. Minimize your exposure to the danger. Minimize your risk. Accidents will happen. However if we observe the above principles, all will be able to work safely in the lab environment. In the following sections jot down the items we will review in this demonstration. Part 1: The most common accident in the room - Burns! 1. What are the steps to lighting a bunsen burner? 2. Why do we use bunsen burners instead of a hotplate for some experiments? 3. When you heat glass or a ceramic object does it have a color? 4. What is the temperature of a bunsen burner flame? 5. Why does the flame give off light? Science Room F211 Mr Reid 6. What are the steps to treating a burn? 7. What ways can you protect yourself from burns when handling hot objects? 8. What are the steps to turning off a bunsen burner? Comments: Science Room F211 Mr Reid Safety 1st - However, what is the worst that could happen in F211. Part 2 Second most dangerous lab items- Corrosives: Acids and Bases. Acids and Bases are two of the items we use most often in this room. It would be a good idea to get to know them in order to protect ourselves from their harmful effects. The damage the can do to your skin and sensitive tissue can be severe but not life threatening. Personal protection is key. Know what you are working with and minimize your exposure 1. What is an acid? 2. Can you name some products that contain acids? Weak acids, like citric acid, have a sour taste. This is characteristic of acids.(MEA question) 3. Acids can be considered strong or weak. What factors make an acid strong or weak? 4. What can a strong acid do to your skin? 5. The formulas for some well known strong acids will be written on the board. Please write them on this sheet with their name. What do the chemical formulas have in common? Memorize these so you can recognize them when they are labeled on containers in the lab. Science Room F211 Mr Reid Corrosives(continued) The chemical opposite of an acid are called bases. Bases can neutralize acids by reacting with them and producing an ionic salt and water. Lye and drain cleaners are often strong base chemicals. 1. What is a base? How does it neutralize an acid? 2. Can you name a product that contains a base? 3. Bases can also be weak or strong. What is the difference between a strong base and a weak base? 4. As mentioned above, strong bases like sodium hydroxide(lye) are good drain cleaners. They dissolve fat and grease extremely well. This being the case, what will a strong base do to your skin? When a base is on your skin and you rub the area, how does it feel? 5. Write the formulas and names of strong bases below. Memorize these so you can recognize them when they are labeled on containers in the lab.
