power notes: measurements and dealing with data
TRANSCRIPT
Today in ChemistryYou will need:
1.Pencil or Pen2.Colored Pencils3.Power Notes: Measurements and Dealing with Data – Bookshelf, 2 pages 3 sides, Please staple4.Log #1 – Update on-line5.Tools of the Trade (3pages 5 sides –PLEASE STAPLE – Due Today
Assignment Log #1Check
OffDate
GivenDate Due
Name of Assignment Possible Pts.
Earned Pts.
8/30 9/4 Tools of the Trade 125/10
9/4 9/5 Measurements and Dealing with Data
110
Update Log with Graded Paper Scores
Power Notes – Measurements & Dealing w/DataManagers: 1)Log in to LearningPoint2)Select Mori Classroom3)Select Daily Assignments4)Select Week of Sept 3rd – Sept 7th
5)Select Slide share: Measurements & Dealing w/Data6)Make it Full Screen7)Take the group through completing the notes….paraphrase, abbreviate and highlight
Topic Name____________________ Class
PeriodDate
Units Incremental amounts used for measuring size, distance, mass, etc.
In Science you must always LABEL your numbers with the UNITS you are using.
Length meter m
Mass gram g
Volume liter, cubic unit L or u3
Temp Celsius, Kelvin C , K
Amount of Substance Mole mol in Solution
Time Second s
Luminous Intensity candela cd(brightness)
Electrical Current ampere A
In order to communicate effectively scientists around the world need to speak the same math language. This is the acceptable measurement system in chemistry.
Are added to the base unit (gram, meter, liter) CHANGE THE SIZE of the base measurement
Is called ABSOLUTE ZERO. This is the temperature at which particles would actually stop moving. A type of matter known as BOSE EINSTEIN CONDENSATES or BEC’s, have been cooled to this state.
Is the metric temperature we will be using in chemistry. To convert Celsius to Kelvin you just ADD 274.15 to whatever Celsius temperature you measure.
Concerned with measurements which analyze amounts (quantities) of matter.
This is due to the accuracy and precision of the person making the measurements
International System of Measurements
Prefixes
Zero Kelvin
Celsius
Quantitative Science
Limitations always exist in science
A measurement that is CORRECT
A measurement that is the same every time it is taken; precise measurements can be reproduced
significant figures is the number of digits believed to be correct by the person doing the measuring. We will round to the nearest 100th this year.
Accuracy
Precision
Estimation Digit
TOOL Used to Measure Unit Label
Graduated Cylinder volume mL
Beaker volume mL
Flask volume mL
Meter Stick volume cm3
Meter Stick distance, length m
Triple Beam Balance mass g
Electronic scale mass g
Stop Watch second sec
Thermometer temp C or K
Analysis of Data -Charts -Graphs
Variable a quantity, trait, or an attribute whose value may vary over the course of an experiment.
The factor that the experimenter decides to change or control; the cause of something; input
The factor that changes because the independent variable has changed; effect; output
Independent Variable
Dependent Variable
X axisIndependent variable
Y axisDependent variable
eg: a time increases the distance of the car travels also increases
Identifying Patterns:
DIRECT relationship between variables produces a graph with an upward trend
Indirect or Inverse relationship between variables produces a graph with a downward trend
eg: as the pressure increases the size of the balloon decreased
Power Notes – Measurements & Dealing w/DataManagers: 1)Log in to LearningPoint2)Select Mori Classroom3)Select Daily Assignments4)Select Week of Sept 3rd – Sept 7th
5)Select Slide share: Measurements & Dealing w/Data6)Make it Full Screen7)Take the group through completing the notes….paraphrase, abbreviate and highlight
Homework
1. Complete Power Notes- Measurement and Dealing with Data – Due Tomorrow
2. Changing Seats Tomorrow