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Laboratory Equipment

Laboratory Equipment. The tools you use to increase your understanding. Beakers. Used for Pouring, storing, mixing, heating, dispensing NOT used to measure Has a “beak” to aid pouring. Test Tube. Used for storing, mixing, heating NOT for measuring Should be held with tongs, clamps

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Laboratory Equipment

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  1. Laboratory Equipment The tools you use to increase your understanding

  2. Beakers • Used for • Pouring, storing, mixing, heating, dispensing • NOT used to measure • Has a “beak” to aid pouring

  3. Test Tube • Used for storing, mixing, heating • NOT for measuring • Should be held with tongs, clamps or a ring-stand clamp NEVER with your hands

  4. Flask • No beak • Used for storing, heating, etc. • Not for measuring • Many different shapes • Should not be held by hands

  5. Graduated Cylinder • Used to measure liquids • Not for reactions • Read from the curve of the meniscus

  6. Meniscus Curved shape of a liquid stored in a cylinder Caused by: adhesion between the liquid and its container cohesion between particles of the liquid

  7. Bunsen Burner • Turn on gas FIRST • Control gas and air to create a nice blue cone of flame • NEVER put glassware into the flame, as the glass will weaken and then melt

  8. Ring Stand w/ Clamp • Used as a steady base • Many different clamps and instruments will attach to the stand

  9. Triple-Beam Balance

  10. Triple-Beam Balance • Used to measure mass • Moving the weight farther from the pan increases the leverage • Be sure to zero the balance for each mass • Use paper to keep materials from sticking to the balance pan

  11. Which is best for measuring liquids? • Beaker • Graduated Cylinder • Flask • Crucible

  12. What is this? • Graduated Cylinder • Beaker • Triple-beam Balance • Test Tube

  13. What is this NOT used for? • Heating • Measuring • Pouring • Storing

  14. What is this? • Graduated Cylinder • Funnel • Triple-beam Balance • Test Tube

  15. What should you do to a triple-beam balance before weighing a substance? • Use new paper • Zero the balance • Move all weights to zero • All of the above

  16. What is this effect called? • Meniscus • Musculum • Mensa • Mosca Quito

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