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measurement

AP Chemistry Zumdahl 7E Chapter 1 Notes

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Chemistry
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measurement
Metrology
Numeral systems
Scottish inventions
Numerical analysis
Significant Figures
Celsius
Temperature
International System of Units
Accuracy and precision
Scientific Notation
Gas constant

1 AP Chemistry A. Allan Chapter 1 Notes - Chemical Foundations 1.1 Chemistry: An Overview A. Reaction of hydrogen and oxygen 1. Two molecules of hydrogen react with one molecule of oxygen to form two molecules of water 2H2 + O2 ? 2H2O 2. Decomposition of water 2H2O ? 2H2 + O2 B. Problem Solving in Chemistry (and life) 1. Making observations 2. Making a prediction 3. Do experiments to test the prediction 1.2 The Scientific Method A. General Framework 1. Making observations a. Quantitative ( measurement) b. Qualitative (color, phase, shape, etc) 2. Making a prediction 3. Do experiments to test the prediction B. Vocabulary 1. Observation a. Something that is witnessed and can be recorded 2. Theory (Model)

Chapter 4

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Chemistry
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Chemistry
measurement
Mass
Stoichiometry
Chemical properties
SI base units
Chemical formulas
Molecular mass
Mole
Molar mass
Atomic mass
Limiting reagent
behavior
Human development
Interpersonal relationships
Love
Psychoanalysis
Attachment theory
Ethology
Personal life
Technology

Chemistry 1210: General Chemistry Dr. Gina M. Florio 13 September 2012 Jespersen, Brady, Hyslop, Chapter 4 The Mole and Stoichiometry CHE 1210 Lecture Slides G.M. Florio 1 Conversion Factors Conversion Factor ? relates one quantity to another ? used to convert between two units in chemistry What is my height in centimeters (cm) if I am 5 feet 4 inches tall? 1. How many inches are in a foot? 2. How many inches are in a centimeter? 12 inches = 1 foot 1 inch = 2.54 cm Factor Label Method The factor-label method, or dimensional analysis lets us treat a numerical problem as one involving a conversion from one kind of units to another using conversion factors.

Bob Jones PPT Notes -- Chapter 3b

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Chemistry
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Mathematics
Numbers
Statistics
Arithmetic
Elementary arithmetic
measurement
Numeral systems
Computer arithmetic
Significant Figures
Scientific Notation
Floating point
pi

Measurements Reporting 1 how close a measurement or the average of several measurements is to the established or theoretical value accuracy Accuracy How close you are to the correct answer Small percent error ? 100% Percent Error O ? A A percent error = Your answer is 2351. The correct answer is 2048. What is your percent error? 2351 ? 2048 2048 ? 100 = 14.79% Sample Problem how close several measurements of the same event are to each other how reproducible the results are precision precise but not accurate 9.75 sec 9.74 sec 9.73 sec 9.75 sec Electronic Gate Timer Hand Timers Avg: 9.7425 9.0241sec accurate but not precise 9.51 sec 9.20 sec 8.52 sec 8.85 sec Electronic Gate Timer Hand Timers Avg: 9.0200 9.0241sec precise and accurate 9.02 sec 9.01 sec 9.03 sec 9.02 sec

Bob Jones PPT Notes -- Chapter 3a

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Chemistry
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measurement
Systems of units
Units of length
SI derived units
Centimetre gram second system of units
SI units
International System of Units
Conversion of units
Centimetre
Litre
Units conversion by factor-label
Orders of magnitude

Measuring and Units 1 All slides in this section contain: Clipart.com items: 8260752, 7804277 The Dominion Mandate requires us to gain knowledge about God?s creation. To do so, we must take measurements. Measurement measurement the act of comparing an unknown quantity to a standard unit When you write a measurement ? You must have a number. You must have a unit. (How much information does the statement ?I ran 7? give you?) instrument a device to aid in measuring Is accurately subdivided Is calibrated Instrument Has units on a scale Started with the metric system. Expanded to SI. SI System (International System of Units) We will use 5 of these. There are 7 base units. SI System (International System of Units) base units units that do not come from other units Chemistry Base Units

Chapter 5

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Chemistry
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Physics
measurement
thermodynamics
Fluid dynamics
Underwater diving
Atmospheric thermodynamics
State functions
Gas
Pressure measurement
Torr
Pressure
Volume

Chapter 5 ? Gases 5.1- Pressure ~Barometer ? Measures atmospheric pressure. Invented in 1643 Units of Pressure ~Manometer ? instrument used for measuring pressure. MmHg / Torr ~ Standard atmosphere : 1 atm = 760 mmHg = 760 Torr = 101325 Pa 5.2 The Gas Laws of Boyle, Charles, and Avogadro Boyle?s Law- Pressure and volume are INVERSELY PROPORTIONAL P goes up V goes down P1V1 = P2V2 Charles Law- As T increases V increases V1/ T1 = V2/ T2 ~ K = `C + 273 ~ Pgas = Patm + Ph in an open ended manometer Gay- Lussac?s Law- P1/T1 = P2/T2 Avogadro?s Law- V1/n1 = V2/n2 Combined gas law- P1V1/n1T1 = P2V2/n2T2 Ideal Gas Laws- PV = nRT ~Kinetic Molecular Theory of Gases consant motion and perfectly elastic gas molecules do not attract or repel

Chapter 1

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Chemistry
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Statistics
measurement
Thought
Statistical theory
Ficus
Accuracy and precision
Significant Figures
Uncertainty
systematic error
Trailing zero

Chapter 1.3 (Pages 8-10) SI system- International System of units. Based on/ Derived from metric system. Quantitative Observation- Measurement Consists of a number and a scale (unit) Mass- Measure of resistance of an object to a change in its state of motion Weight- Force gravity exerts on an object Chapter 1.4-1.5 (pages 11-18) Uncertainty- Estimated number in a measurement A measurement always has some degree of uncertainty Assumed to be +/- 1 unless otherwise indicated Precision- the degree of agreement among several measurements of the same quantity (reproducibility) Accuracy- Agreement of a particular value with the true value Errors:

research methods 2 chapter 1 questions

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Psychology
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behavior
Market research
Science
measurement
Psychometrics
Human development
Psychoanalysis
Human behavior
Level of measurement
scale
Attachment theory
Technology
Psychology

Research Methods Chapter 1 questions 1. To analyze data 2. purpose of the research and the characteristics of the data 3. Ratio, because the intervals b/w each numbers is the same n there's a zero 4.nominal 5. Scale 6. Scale 7. Nominal 8. Ordinal 9. Interval 10. Category 11. Variable
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Measurement Quiz

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Physics
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measurement
Metrology
Systems of units
Kilogram
Mass
Size
Metric System
Measuring instrument
Introduction to the metric system
Standard
Technology
general science
measurment
quiz

NAME: PD: Measurement Quiz Answer #1-6 with choices found here: Balance Graduated cylinder Liter Meter Gram Ruler What is the base unit for mass? What is the tool used to measure mass? What is the tool used to measure volume? What is the unit in the metric system used to measure volume? What tool is used to measure length? What is the metric system unit for length? Completion If you have 3.4 mm, how many centimeters is that? How many grams are in a kilogram? What is the logical unit to use when measuring the mass of an elephant? What is the logical unit to use when measuring the mass of a paper clip? How many liters are in a milliliter? Give an example of something that it would be logical to measure with a liter?

Midterm Exam Review for AP Human Geography

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Human Geography
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Cartography
Geodesy
behavior
measurement
earth
Human development
Interpersonal relationships
Psychoanalysis
Midterm exam
Cartogram
Attachment theory
united states

APHG Copeland Midterm Review Questions Midterm Exam: Tuesday, November 1 Review these questions, along with your Key Questions for Units 1-4 to assist you in your preparation for the Midterm Exam. Remember the Midterm accounts for 8% of your final APHG grade. The diagram to the right best indicates the concept of hierarchical diffusion assimilation barriers to diffusion distance decay acculturation The map below, known for its distortion of the high latitudes, is a: Robinson projection Mercator projection Isoplethic Equal Area projection Cartogram 3. Which of the following characteristics is currently shared by Switzerland, Canada, and New Zealand? Low population-growth rates Megalopolis urban systems High infant-mortality rates

System Measurement

Subject: 
Environmental Science
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measurement
Units of energy
British thermal unit
Therm
Joule
energy
Work
Erg
Metric System
Centimetre–gram–second system of units
Kilowatt hour
Calorie
Environment

Energy and Climate Change Systems of Measurement: * USCS: (formerly the British System) The system used in the U.S. consisting of feet, pounds, and seconds. ?*The Metric System: meters, kilograms, and seconds. ?* Fundamental Units: length, mass, and time. System Length Mass Time SI (mks) Meter Kilogram Second SI(cgs) Centimeter Gram Second USCS (fps) Foot Slug Second Work and Energy System Force = Mass x Acceleration SI (mks) Newton Kg m/s^2 SI (cgs) Dyne Gram Cm/s^2 USCS (fps) Lb Slug Ft/s^2 *Work: force multiplied by the distance through which the force acts. The Newton *(N) The SI unit of force. 1 N = 0.225 lbs The Joule (J) Amount of work done by a force of one newton acting through a distance of one meter.

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