1. Lab Equipment and Measurements

2. Graduated Cylinder Measures volume of liquids Measures volume of liquids Unit: liter (L) Unit: liter (L) Commonly use mL in lab Commonly use mL in lab Proper Procedure: Place cylinder on a flat surface, get at eye level with the liquid, and read the bottom of the miniscus, the curved part of the top of the liquid. Proper Procedure: Place cylinder on a flat surface, get at eye level with the liquid, and read the bottom of the miniscus, the curved part of the top of the liquid.

3. Correct Technique!

4. Meniscus

5. Practice

6. Beaker Can be used to measure large volumes, but not as accurate as a graduated cylinder Can be used to measure large volumes, but not as accurate as a graduated cylinder Mainly used for pouring and mixing Mainly used for pouring and mixing Unit: mL Unit: mL

7. Triple-Beam Balance Measures mass (amount of substance – how much) Measures mass (amount of substance – how much) Unit: gram (g) Unit: gram (g) Procedure: Place balance on a flat surface, adjust masses until the arm balances. Take the sum of the 3 masses. Procedure: Place balance on a flat surface, adjust masses until the arm balances. Take the sum of the 3 masses.

8. Practice!

9. More Practice!

10. Spring Scale Measures weight (the force of the pull of gravity on a substance) Measures weight (the force of the pull of gravity on a substance) Unit: Newton (N) Unit: Newton (N)

11. Look more familiar?

12. Meterstick or Ruler Measures distance or length Measures distance or length Unit: meter (m), or cm (centimeter) in the lab Unit: meter (m), or cm (centimeter) in the lab

13. Practice!

14. Thermometer Measures temperature Measures temperature Unit: Kelvin (K) or Unit: Kelvin (K) or °Celcius (°C) °Celcius (°C) What do you think would be the “proper procedure” for reading a thermometer? What do you think would be the “proper procedure” for reading a thermometer?

15. Stopwatch or Timer Measures: time Measures: time Unit: seconds (s) Unit: seconds (s)

16. Other Equipment Test tube Test tube Funnel Funnel Bunsen burner Bunsen burner Test tube clamp Test tube clamp

17. Other Equipment (cont.) Ring stand Ring stand Erlenmeyer flask Erlenmeyer flask

18. Dissection Equipment Forceps Teasing needle Probe and seeker Scalpel

19. IMPORTANT Prefixes Foldable Kathy Has Dirty Underwear, Don’t Check Mine! Kathy Has Dirty Underwear, Don’t Check Mine! kilo = 1000 kilo = 1000 hecto = 100 hecto = 100 deca = 10 deca = 10 Basic unit Basic unit deci = 1/10 = 0.1 deci = 1/10 = 0.1 centi = 1/100 = 0.01 centi = 1/100 = 0.01 milli = 1/1000 = 0.001 milli = 1/1000 = 0.001