Lab Equipment and Measurements White Plains High School Science Dept.

Graduated Cylinder Measures volume of liquids Unit: liter (mL) 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 liquid.

Correct Technique!

Meniscus

Practice

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

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

Practice!

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

Look more familiar?

Meterstick or Ruler Measures distance or length Unit: meter (m) or cm (centimeter)

Thermometer Measures temperature Unit: Kelvin (K) or °Celcius (°C)

Practice!

Stopwatch or Timer Measures: ? Unit: ?

Other Equipment Test tube Funnel Bunsen burner Test tube clamp

Other Equipment (cont.) Ring stand Erlenmeyer flask

Dissection Equipment Forceps Teasing needle Probe and seeker Scalpel

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