Bell ringer 01

Bell ringer 02

Bell ringer 03

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

LengthWhen we measure length there is

only one unit we use, meters

The tool we use is a (5)meter

stick

LengthA meter stick contains (7) 100 cm

and 1000 mm.

Mass

When we measure mass, or

(8)how much stuff an object has in

it, we use (9)grams. Most of you are measured in kilograms. There are

1000 grams in one

kilogram

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

small things

Triple Beam Balance

Spring Scale

Electronic balance

LiquidsWhen 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

LiquidsThere 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 the (14)Meniscus.

Graduated Cylinder

Beaker

Pipette

Flask

VolumeTool: (16)meter stick

Units: meters cube (m3)

Volume = length x width x height

length

width

height

TemperatureThe when we measure

temperature the unit we measure

it in is degrees (18)Celsius

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 PracticeUsing 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