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Uncertainty

Chapter 1

Subject: 
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:

Chapter 2 Outline

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Chemistry
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measurement
Statistics
Science
Accuracy and precision
Units of measurement
International System of Units
scientific method
Decibel
Scientific Notation
Arithmetic precision
Uncertainty
Significant Figures
Measurements and Calculations

Pre-AP Chemistry Modern Chemistry (2006) Chapter 2 Notes-Measurements and Calculations 2.1 The Scientific Method The process that researchers use to carry out their investigations is often called the scientific method. The scientific method is a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data. 2.2 Units of Measurement Units of Measurement Measurements are quantitative information. They represent quantities. A quantity is something that has magnitude, size, or amount. A quantity is not the same as a measurement. For example, the quantity represented by a teaspoon is volume. The teaspoon is a unit of measurement, while the volume is a quantity.

Chapter 2 Outline

Subject: 
Chemistry
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measurement
Statistics
Science
Accuracy and precision
Units of measurement
International System of Units
Decibel
Scientific Notation
Arithmetic precision
Uncertainty
scientific method
Significant Figures
Measurements and Calculations

Pre-AP Chemistry Modern Chemistry (2006) Chapter 2 Notes-Measurements and Calculations 2.1 The Scientific Method The process that researchers use to carry out their investigations is often called the scientific method. The scientific method is a logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data. 2.2 Units of Measurement Units of Measurement Measurements are quantitative information. They represent quantities. A quantity is something that has magnitude, size, or amount. A quantity is not the same as a measurement. For example, the quantity represented by a teaspoon is volume. The teaspoon is a unit of measurement, while the volume is a quantity.

AP Physics

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Physics
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measurement
Units of length
Metrology
Customary units in the United States
Arithmetic
Centimetre
Foot
Uncertainty
Conversion of units
Scientific Notation
1 centimetre
Litre

Presentation of chapter 1 Frank Chen Period 5 1.4 Conversion of Units In 1960, an international committee established a set of fundamental quantities of science which is called SI. There is also a set of U.S. customary units, theses are some examples of convert U.S. into SI: 1 mile = 1609 m = 1.609 km; 1 m = 39.37 in. = 3.281 ft; 1 ft = 0.3048m = 30.48 cm; 1 in = 0.0254m = 2.54 cm Conversion Factors The method to convert the different units into the required unit Ex. 13.0 in. = (15 in.)(2.54 cm/1in.) = 38.1 cm 1.5 Order of magnitude Order of Magnitude is an scientific method use symbol ?~?to estimate a magnitude round into one digit and expressed in scientific notation. Ex. 0.00054m ~ 10^-4m 3600m ~ 10^3m 4 1.6 Uncertainty in Measurements

Chemistry lab guide

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Chemistry
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Science
Knowledge
Uncertainty
systematic error
Plot
Error bar
Accuracy and precision
Measurement uncertainty

? IB Chemistry Student Guide to Internal Assessment Written Reports 2011 As a guide use the underlined headings as subheadings for your write up. Date This refers to the date that the experiment was performed and not the date of the write-up. Name Ensure that your name is very clear. Design Your teacher will give you an open ended problem to investigate. From this you must formulate a research question. Research Question
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