Identifying Laboratory Equipments Pre-lab Discussion Scientists use a variety of tools to explore the world around them. Tools are very important in the advancement of science. The tools scientists use depends on the problems they are trying to solve. A scientist may use something as simple as a metric ruler to measure length of a leaf. Another time, the same scientist may use a complex computer to analyze large amount of data concerning hundreds of leaves. In this investigation you will identify pieces of laboratory equipment likely to be found in chemistry laboratory. You will also learn the function of each piece of laboratory equipment. Problem What are the names and functions of some of the pieces of laboratory equipment found in a typical chemistry laboratory? Materials Equipments shown in this activity (for inspection and demonstration) Safety Handle glassware carefully. Be careful when handling sharp instruments. Keep all combustibles away from Bunsen burner. Procedure Part A. Identifying Laboratory equipment 1. Look at the drawing of the laboratory equipment. In observations, write the letter of the drawing next to the name that correctly identifies it. Part B. Identifying the Function of Certain Type of Laboratory Equipment 1. Carefully inspect the different types of laboratory equipment that have been set out by your teacher. 2. In observations, identify the function of each piece of laboratory equipment. Observations Part A. Identifying Laboratory equipments ___________ 1. Beaker ___________ 2. Dropper pipette _________ 3. funnel __________4. Graduated cylinder ________ 17. Measuring pipette ________ 18. Volumetric flask ________ 19. Erlenmeyer flask ________ 20. Plastic wash bottle _________5. Meter ruler ________ 21. Evaporating dish _______6. Thermometer ________ 22. Watch glass _______ 7. Triple beam balance ________23. Crucible and cover ________8. Test tube ________ 24. Test tube holder _______ 9. Stirring rod ________ 25. Safety goggles ________ 10. Electronic balance ________ 26. Crucible tong ________11. Wire gauge ________ 27. Test tube rack ________12. Bunsen burner ________ 28. Spatula ________ 13. Ring stand ________ 29. Spot plate _________ 14. Gas collecting tube _________30. Rubber stopper ________15. Glass burret ________ 16. Iron ring ________ 31. Gas-collecting bottle _______ 32. Clay triangle Part B. Identifying the Function of Certain Type of Laboratory Equipment Name Function 1. Beaker ______________________________________________________________ 2. Dropper pipette ________________________________________________________ 3. Funnel ______________________________________________________________ 4. Erlenmeyer flask ______________________________________________________ 5. Graduated cylinder ___________________________________________________ 6. Plastic wash bottle ____________________________________________________ 7. Evaporating dish _____________________________________________________ 9. Thermometer _________________________________________________________ 10. Watch glass __________________________________________________________ 11. Triple beam balance __________________________________________________ 12. Crucible and cover ____________________________________________________ 13. Test tube ____________________________________________________________ 14. Test tube holder ______________________________________________________ 15. Stirring rod _________________________________________________________ 16. Safety goggles _______________________________________________________ 17. Electronic balance __________________________________________________ 18. Crucible tong _______________________________________________________ 19. Test tube rack _______________________________________________________ 20. Bunsen burner _______________________________________________________ 21. Spatula _____________________________________________________________ 22. Spot plate __________________________________________________________ 23. Rubber stopper ______________________________________________________ Analysis and Conclusions 1. Which laboratory tools can be used to measure volume of liquid? _____________________________________________________________________ 2. Which laboratory tools can be used to react or combine two or more chemicals together? Critical thinking and application 1. Which tool will you use to make each of these measurements? a. Temperature of swimming pool water? ______________________ b. Length of a room _________________________ c. Mass of a baseball ______________________ d. Volume of water ______________________ e. Amount of time to react two chemicals _____________________