Lab Equipment and Measurements

1
Lab Equipment and Measurements
2
Graduated Cylinder

• Measures volume of liquids
• Unit liter (L)
• 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.

3
Correct Technique!
4
Meniscus
5
Practice
6
Beaker

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

7
Triple-Beam Balance

• Measures mass (amount of substance how much)
• Unit gram (g)
• 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)
• Unit Newton (N)

11
Look more familiar?
12
Meterstick or Ruler

• Measures distance or length
• Unit meter (m), or cm (centimeter)
  in the lab

13
Practice!
14
Thermometer

• Measures temperature
• Unit Kelvin (K) or
• Celcius (C)
• What do you think would be the proper procedure
  for reading a thermometer?

15
Stopwatch or Timer

• Measures time
• Unit seconds (s)

16
Other Equipment

• Test tube
• Funnel
• Bunsen burner
• Test tube clamp

17
Other Equipment (cont.)

• Ring stand
• Erlenmeyer flask

18
Dissection Equipment

• Forceps
• Teasing needle
• Probe and seeker
• Scalpel

19
IMPORTANT Prefixes Foldable

• Kathy Has Dirty Underwear, Dont 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