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Equipment and Safety

1. Bunsen Burner 2. Beaker 3. Tongs 4. Erlenmeyer Flask 5. Evaporating Dish 6. Graduated Cylinder. 7. Iron Ring 8. Mortar and Pestle 9.Test Tube 10. Buret 11.Volumetric Flask 12. Watch Glass. Equipment and Safety. Equipment and Safety.

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Equipment and Safety

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  1. 1. Bunsen Burner 2. Beaker 3. Tongs 4. Erlenmeyer Flask 5. Evaporating Dish 6. Graduated Cylinder 7. Iron Ring 8. Mortar and Pestle 9.Test Tube 10. Buret 11.Volumetric Flask 12. Watch Glass Equipment and Safety

  2. Equipment and Safety 13. You should always first flush the effected area with water. 14. Graduated cylinder 15. (theoretical-experimental) / theoretical x 100 experimental / theoretical x 100 16. Accuracy– how close to the actual answer Precision – how close answers are to each other

  3. Tips for significant figures • All numbers (1-9) are significant • For zeros, remember the two questions: • Is there a decimal point? • Is there a number (besides zero) anywhere in front of the zero? • If yes to both – significant • If no to either – not significant • When adding, look at the decimal place • When multiplying, look at the least number of significant figures.

  4. Equipment and Safety a. 560.5 4 b. 700 1 c. 79032 5 d. 0.0004820 4 e. 0.005040300 7 a. 56.70 + 1.201 57.90 (to hundredths) b. 12.3 x 4.5 55 (to 2 sig figs) c. 110/2.55 43 (to 2 sig figs) d. 771 – 1.5 769 or 770. (to ones place) e. 156.6/2.0 78 (to 2 sig figs)

  5. Equipment and Safety 19 a. 0.250 L b. 0.013 km c. 100 mm

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