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Lab Safety and Equipment

Lab Safety and Equipment. Honors and AP Chemistry. Lab Safety. We will be working with a variety of chemicals over the course of the year, including: Acids and Bases (corrosive, immediate damage to skin/eyes) Toxic substances (almost all lab chemicals are toxic to some extent.)

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Lab Safety and Equipment

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  1. Lab Safety and Equipment Honors and AP Chemistry

  2. Lab Safety • We will be working with a variety of chemicals over the course of the year, including: • Acids and Bases (corrosive, immediate damage to skin/eyes) • Toxic substances (almost all lab chemicals are toxic to some extent.) • Explosives (many gases and even some solids will explode if mixed incorrectly or not handled according to directions.) • Flammables (gases and liquids tend to ignite and many reactions produce enough heat to do so.)

  3. Behavior • No horseplay is allowed in lab, no exceptions. Doing so is a danger to yourself and to your classmates. • Follow all written and spoken lab directions. I will give specific instructions for each lab describing how to work with the chemicals and equipment we are using. This includes coming to class prepared if I have assigned reading the previous day. • No food or drink will be allowed during ANY lab work. • Be aware of where first aid and other emergency items have been placed, i.e. fire extinguishers, etc.

  4. Behavior, cont’d • Never throw away or pour out any chemical waste from our labs unless otherwise directed. Many chemicals are flammable or toxic and must be safely disposed of. • Never leave your Bunsen burner, chemicals, or lab equipment unattended. You are responsible for your materials. • Report any accident (spills, broken glass, injuries) immediately. Do not attempt to pick up broken glass or wipe up chemicals without asking first. • Handle glassware/chemicals carefully and pay attention to safety labels. Report damaged equipment of any sort immediately.

  5. Clothes • Goggles must be worn for any lab and/or demonstrations. • Shoes must be closed-toe, i.e. tennis shoes, etc. Sandals and flip-flops do not protect your feet- I will not allow you into lab and you will take a zero for the lab and that day’s participation if you do not come prepared. • Long hair and clothing must be tied back or otherwise restrained at all times to prevent fires.

  6. Clothes, cont’d • Many of the chemicals we will be working with (acids, corrosive gasses) will destroy jewelry. Bracelets must be removed before labs and small rings may be worn at your own risk. • Aprons will be provided and must be worn for labs, unless otherwise directed. If you like, you may purchase a white lab coat of your own.

  7. Safety Contracts • This is a quick copy of the material we’ve already gone over. • Please have it signed and returned by the end of this week for your FIRST daily grade in this class. • We will have a quick “mini-quiz” over the safety rules Wednesday in class

  8. Lab Equipment and Glassware

  9. Glassware • We will be using quite a few pieces of glassware this year- this will be a quick introduction: • Names (so you know what I’m talking about) • Common uses • Precautions (some things are more fragile than others.)

  10. Beakers • The most common glassware we’ll be using. • Mainly used for mixing, heating storage, and boiling.

  11. Florence Flasks • Round flasks with long necks and a flat bottom. • Used for large amounts of heating and boiling. • Must check for cracks and chips.

  12. Burettes • Long slender glass tubes with tapered ends. • Used to accurately measure out liquids. • These must be kept very clean and are also fragile.

  13. Erlenmeyer Flasks • Similar to beakers, but have a tapered top. • Mainly used to store and mix fluids, usually paired with burets.

  14. Funnels • May be plastic or glass. • Used to add fluids without spilling. • Often used to help fill burets. • Can break very easily.

  15. Graduated Cylinder • Similar to, but wider than burets. • Generally used to measure fluids for reactions. • Better than burettes for large amounts.

  16. Pipettes • Come in a variety of shapes and types (may be disposable.) • Used to add small or fixed amounts of fluids called aliquots.

  17. Test Tubes • Most common and cheap piece of glassware. • Used to carry out small reactions and heat small amounts of fluid.

  18. Volumetric Flasks • Similar to Florence flasks, but have longer necks. • Used to accurately make chemical solutions with water. • Not for boiling.

  19. Watchglasses • Similar to lenses, variety of sizes. • Used to cover beakers and other glassware. • Small reactions may be carried out on them.

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