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To be clear:
If there are three names on the board, I
will not open the store at the end of the
class period.
Measurements
Objective: Achievers on the ROAD to
College will be able to describe and use
different types of measurement tools
including: rulers, thermometers, scales,
microscopes, balances, calculators).
Qualitative vs. Quantitative
Measurements
 A (1)qualitative measurement deals with
descriptions, data can be observed but not
measured.
 Examples: (2)colors, textures, smells, tastes,
appearances
 A (3)quantitative measurement deals with
numbers; data can be measured/counted.
 Example: (4)height, length, area, weight, speed,
time, temperature, costs, age
Qualitative vs. Quantitative
Measurements
Length
 When we measure length there is only
one unit we use,
meters
 The tool we use is a (5)meter stick
Length
 A meter stick contains (7) 100 cm and
1000 mm.
Mass
 When we measure mass, or (8)how
much
(9)
stuff an object has in it, we use
grams. Most of you are measured in
kilograms. There are
one
kilogram
1000 grams in
Mass
 There are a couple of different tools for
measuring mass
 (10) Triple beam balance: that’s what we
use in this school.
 (11) Electronic balance: this is what you may use
in college, its very
precise
 (12)Spring scale: for measuring very
things
small
Triple Beam Balance
Spring Scale
Electronic balance
Liquids
 When we measure liquids the unit we use is
(13)Liter. Often in science we will use a
milliliter. There are 1000 mL in a liter
Liquids
 There are many tools we can use to measure
liquids:
 (15) Graduated cylinder: which is best
for measuring amounts that must be very
precise.
 To determine the volume of the liquid, read the
bottom of the curve. This
curve is called
Meniscus.
the (14)
Pipette
Flask
Beaker
Graduated Cylinder
Volume
 Tool: (16)meter stick
 Units: meters cube (m3)
 Volume = length x width x height
length
height
width
Temperature
temperature the unit
we measure it in is degrees (18)Celsius
 The when we measure
 The tool we always use is a
(17)thermometer
Guided Practice: Test
Questions
Which of the following can NOT be used to measure
volume?
A. Balances
C. Pipettes
B. Beakers
D. Graduated cylinders
Guided Practice: Test
Questions
Which of these will give the MOST accurate and precise
measurement of 15 mL of liquid to be placed in a test
tube?
A A 100 mL graduated cylinder
B A 25 mL graduated cylinder
C A 10 mL beaker
D A 50 mL beaker
Guided Practice: Test
Questions
Aisha measured the volume of a solvent using a
graduated cylinder. What is the correct volume in mL?
A. 136 mL
B. 138 mL
C. 141 mL
D. 142 mL
Independent Practice
 Using your notes (or if you’re a college bound scholar,
not using your notes) Answer the questions on this
worksheet
 Anything you do not finish will be homework