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Pre-Lab Part I: Define the following terms: Measurement Matter Length Volume Mass Temperature

Pre-Lab Part I: Define the following terms: Measurement Matter Length Volume Mass Temperature Density Glassware. Pre-Lab Part II: Complete the following chart: . Pre-Lab Part III: Answer the following:

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Pre-Lab Part I: Define the following terms: Measurement Matter Length Volume Mass Temperature

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  1. Pre-Lab Part I: Define the following terms: • Measurement • Matter • Length • Volume • Mass • Temperature • Density • Glassware

  2. Pre-Lab Part II: Complete the following chart:

  3. Pre-Lab Part III: Answer the following: • What advantage does the International System of Units (SI) have over the English system? • Explain the difference between mass and weight. • Why is some laboratory equipment made of porcelain instead of glass? • Draw three examples of safety symbols and explain their meaning.

  4. Laboratory Equipment Lab Guide No. 1

  5. Objectives • Identify standard laboratory equipment • Explain standard use of laboratory equipment

  6. GLASSWARE

  7. Beaker • measures volume • used as a container (like a cup) • may be heated • common sizes: 100, 250, 400 mL

  8. Erlenmeyer Flask • measures volume • used to heat and store liquids • common sizes: 125, 250, 500 mL • The bottom is wider than the top so it will heat quicker because of the greater surface area exposed to the heat.

  9. Graduated Cylinder • used to make accurate measurements of liquid volumes • meniscus

  10. Test Tubes • used to hold, mix, or heat small quantities of solid or liquid chemicals

  11. Pipet (Pipette) • used for moving small amounts of liquid from place to place

  12. Buret (Burette) • used to dispense determined amounts of liquids in experiments • marked with a milliliter scale • pinch clamp at the bottom

  13. Funnel • used to target liquids into any container so they will not be lost or spilled • can be used with filter paper

  14. Watch Glass • used to hold solids when being weighed or transported • should never be heated

  15. Volumetric Flask • used to measure one specific volume (very accurate) • mostly used in mixing solutions where a one liter or one half a liter is needed

  16. Florence Flask • used as a container to hold liquids • has a round bottom with a single long neck • designed for uniform heating and ease of swirling

  17. Stirring Rod (To stir means to mix around) • used to stir things • usually made of glass.

  18. GLASSWARE

  19. GLASSWARE

  20. GLASSWARE

  21. GLASSWARE

  22. GLASSWARE

  23. GLASSWARE

  24. GLASSWARE

  25. GLASSWARE

  26. GLASSWARE

  27. GLASSWARE

  28. GLASSWARE

  29. PORCELAIN

  30. Evaporating Dish • porcelain • used to heat and evaporate liquids

  31. Crucible • Crucibles are used to heat small quantities to very high temperatures.

  32. Mortar and Pestle • used to crush (grind) solids into powders for experiments, usually to better dissolve the solids.

  33. Test Tube Holder • used to hold test tubes when they are hot and untouchable

  34. Tongs • used to hold many different things such as flasks, crucibles, and evaporating dishes when they are hot

  35. Clamps • attached to the ring stand • used to hold a large test tube or flask

  36. Spatula • useful for transferring small amounts of solids

  37. Iron Ring • Used to fasten to the ring stand as a support for different equipment.

  38. Ring Stand • used to hold items being heated

  39. REVIEW

  40. OTHEREQUIPMENT

  41. Stoppers • come in many different sizes • the sizes are from 0 to 8. • can have holes for thermometers and for other probes that may be used

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