1.10-1.15 Basic Units of Measure. Tro's Introductory Chemistry, Chapter 2 2 The Standard Units Scientists have agreed on a set of international standard.

Slides:



Advertisements
Similar presentations
Ch. 2 - Measurement I. Units of Measurement (p.34-45)
Advertisements

Numbers in Science Chapter 2 2.
Chapter 2: Measurement and Problem Solving
Chapter 2: Measurement and Problem Solving
Standards of Measurement
Chapter 2 Measurement and Problem Solving
Nature of Science Metric System-International System of Units (SI)
Introductory Chemistry, 2nd Edition Nivaldo Tro
Chapter 1: Matter and Measurements
CHEMISTRY IS LARGELY A QUANTITATIVE SCIENCE
LecturePLUS Timberlake1 Chapter 1 Measurements Prefixes and Equalities.
How many jumps does it take?
SI UNITS and CONVERSION CALCULATIONS CAFarrer 2013.
Measurement I. Units of Measurement  Number vs. Quantity  SI Base Units & Prefixes  Derived Units  Density Calculations.
Section Units of Measurement
Measurement.
Section 2: Standards of Measurement
Unit 1: Data Analysis Units of Measurements. Measurement is a part of daily activities Examples?
Measurements and Calculations Chapter 2 2.
Chapter 2 Measurement and Problem Solving.
Copyright©2004 by Houghton Mifflin Company. All rights reserved 1 Introductory Chemistry: A Foundation FIFTH EDITION by Steven S. Zumdahl University of.
Ms. Moore 8/17/12 Albert Einstein physicist Stephen Hawking cosmology and quantum gravity.
Chapter 1- Matter and Measurement
1 Measurement Quantitative Observation Comparison Based on an Accepted Scale –e.g. Meter Stick Has 2 Parts – the Number and the Unit –Number Tells Comparison.
CHEMISTRY IS LARGELY A QUANTITATIVE SCIENCE Theories and ideas are tested by measurement Measurements are usually quantitative – have numbers Science is.
Section 2-2 Units of Measurement
How much? How long? How many?
THE METRIC SYSTEM Edited by P. Stewart WHY DO WE USE THE METRIC SYSTEM? Almost all other countries are using the metric system Other countries’ companies.
1 The SI (Metric) System Instruments that use the Metric System.
Standards of measurement
Measurements and Calcuations
What measurements are part of the English measurement system?
 Metric System  (international system of units or SI)  - A decimal system (based on 10) that scientists and everyone else in the world uses, except.
1 The SI (Metric) System Instruments that use the Metric System.
Scientific Notation Units Conversion Factors
Metric Conversions Ladder Method T. Trimpe 2008
Density Chapter 3 Lesson 1. Mass Mass is how much “stuff” is in something.
CMH 121 Luca Preziati Chapter 1: Matter, Energy, and Measurement Chemistry = The science that seeks to understand what matter does by studying what atoms.
Scientific Measurement Wilbraham, Antony C., Dennis D. Staley, Michael S. Matta, and Edward L. Waterman. Prentice Hall Chemistry. 1st ed. Upper Saddle.
Measurements in Physics
Chemistry: An Introduction to General, Organic, and Biological Chemistry, Eleventh Edition Copyright © 2012 by Pearson Education, Inc. Chapter 1 Chemistry.
Metric Measurement Notes
STANDARDS OF MEASUREMENT Section 2
1 Measurements and Calculations Chapter 2. A gas pump measures the amount of gasoline delivered.
Measurements in Chemistry. The Standard Units Scientists have agreed on a set of international standard units for comparing all our measurements called.
Copyright©2004 by Houghton Mifflin Company. All rights reserved 1 Introductory Chemistry: A Foundation FIFTH EDITION by Steven S. Zumdahl University of.
CHEMISTRY IS LARGELY A QUANTITATIVE SCIENCE Theories and ideas are tested by measurement Measurements are usually quantitative – have numbers Science is.
Unit 1: Introduction to Biology
The Metric System A Review of Measurement & The Metric System.
Kanya Ellington Oakhurst Community College Center Oakhurst, CA Introductory Chemistry, 2 nd Edition Nivaldo Tro Chapter 2 Measurement and Problem Solving.
A universal language of measurement
Chapter 3 Sections 3 and 5 Metric System -universal system of measurement used by scientists globally (SI) -based on scales/multiples of 10 -uses prefixes.
Integrated Lab Physical Science Chapter 1 The Metric System (aka SI Measurement) Mrs. Campbell.
Chemistry the study of matter and the changes it undergoes sodiumchlorine sodium chloride.
The Metric System and conversions Why use the metric system?  is it just to annoy American high school science students?  It is used by (almost) the.
Preview Lesson Starter Objectives Units of Measurement SI Measurement SI Base Units Derived SI Units Conversion Factors Chapter 2 Section 2 Units of Measurement.
Chapter 2 Physical Science Review “Physical Science Methods”
1cm Sand Meter Stick BalanceSpring ScaleGraduated Cylinder Mass/Volume The SI system It is a group of units used by scientists to measure length, mass,
Measuring Matter Vocabulary 1.Matter 2.Mass 3.Volume 4.Meter 5.Liter 6.Gram 7.Kilo 8.Centi 9.Milli.
3.2 Units of Measurement > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 3 Scientific Measurement 3.1 Using and.
Introductory Chemistry, 2nd Edition Nivaldo Tro
Chapter 2 SI Units part I SI Units.
Mass – How much matter is in an object
Measurements and Problem Solving in Chemistry
Measuring in International system (SI)
Metric Conversions Ladder Method
Tro's "Introductory Chemistry", Chapter 2
Instruments that use the Metric System
Density.
Chapter 1 Chemistry and Measurements
Presentation transcript:

Basic Units of Measure

Tro's Introductory Chemistry, Chapter 2 2 The Standard Units Scientists have agreed on a set of international standard units for comparing all our measurements called the SI units Système International = International System QuantityUnitSymbol lengthmeterm masskilogramkg timeseconds temperaturekelvinK

Tro's Introductory Chemistry, Chapter 2 3 Some Base Units in the Metric System Quantity Measured Name of Unit Abbreviation Massgramg Lengthmeterm VolumeliterL Timesecondss TemperatureKelvinK

Tro's Introductory Chemistry, Chapter 2 4 Length Measure of the two-dimensional distance an object covers SI unit = meter About 3½ inches longer than a yard 1 meter = one ten-millionth the distance from the North Pole to the Equator = distance between marks on standard metal rod in a Paris vault = distance covered by a certain number of wavelengths of a special color of light Commonly use centimeters (cm) 1 m = 100 cm 1 cm = 0.01 m = 10 mm 1 inch = 2.54 cm (exactly)

Tro's Introductory Chemistry, Chapter 2 5 Mass Measure of the amount of matter present in an object SI unit = kilogram (kg) about 2 lbs. 3 oz. Commonly measure mass in grams (g) or milligrams (mg) 1 kg = pounds, 1 lbs. = g 1 kg = 1000 g = 10 3 g, 1 g = 1000 mg = 10 3 mg 1 g = kg = kg, 1 mg = g = g

Tro's Introductory Chemistry, Chapter 2 6 Volume Measure of the amount of three-dimensional space occupied SI unit = cubic meter (m 3 ) a Derived Unit Commonly measure solid volume in cubic centimeters (cm 3 ) 1 m 3 = 10 6 cm 3 1 cm 3 = m 3 = m 3 Commonly measure liquid or gas volume in milliliters (mL) 1 L is slightly larger than 1 quart 1 L = 1 dL 3 = 1000 mL = 10 3 mL 1 mL = L = L 1 mL = 1 cm 3

Tro's Introductory Chemistry, Chapter 2 7 Related Units in the SI System All units in the SI system are related to the standard unit by a power of 10 The power of 10 is indicated by a prefix The prefixes are always the same, regardless of the standard unit

Tro's Introductory Chemistry, Chapter 2 8 Common Prefixes in the SI System PrefixSymbol Decimal Equivalent Power of 10 mega-M1,000,000Base x 10 6 kilo-k 1,000Base x 10 3 deci-d 0.1Base x centi-c 0.01Base x milli-m 0.001Base x micro-  or mc Base x nano-n Base x 10 -9