3.4 Dimensional Analysis In dimensional analysis you use the units (dimensions) that are part of measurements to help solve (analyze) the problem In dimensional.

Slides:

Advertisements

Similar presentations

FACTOR LABEL / PROBLEM SOLVING Chapter 4. Three step approach 1. Analyze a. What is known? b. What is unknown? c. Plan a solution strategy 2. Calculate.

Advertisements

Extra Credit Lab: Single Replacement Chemistry Name________________________________________per__ page 1 Purpose: To react silver nitrate solution with.

CHEMISTRY CHAPTER 4 PROBLEM SOLVING IN CHEMISTRY

Skills Project Basic Dimensional Analysis. What is dimensional analysis? Dimensional analysis, DA, is a mathematical tool which uses the labels (or dimensions)

Conversion Factors Different ways to express length

Chapter 2 Measurements and Calculations.

Unit Conversion and Dimensional Analysis Notes

Measurements and Calculations

Relating Mass to Number of Atoms

Scientific Measurement

Imagine This! You’re driving along a highway in Mexico when you notice this sign What should your speed be in miles per hour?

Chapter 2 “Scientific Measurement”

Dimensional Analysis.

Scientific Measurement

Do Now: Create a conversion factor for minutes per hour

1.4 Analysis of Units and Conversions in Chemistry

Objectives To learn how dimensional analysis can be used to solve problems To learn the three temperature scales To learn to convert from one temperature.

Objectives To learn how dimensional analysis can be used to solve problems To learn the three temperature scales To learn to convert from one temperature.

Warm Up Multiply. Write answers in simplest form:

COUNTING UNITS FOR…….. atoms. These slides will help you navigate the next section of the Counting Units Lab – Experiment #5/Unit 2 (B): Mole System.

Chapter 2 The Metric System

Dimensional Analysis in Chemistry

Chapter 1 Lesson 1 Chem 105 Kristen Kull SIMS 115 Kristen Kull Kristen Kull CHEM105 General Chemistry I (Kull) CHEM105 General Chemistry I (Kull) Course.

3.3 Solving Conversion Problems > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 3 Scientific Measurement 3.1 Using.

Chapter 3 Scientific Measurement 3.3 Solving Conversion Problems

Measurements and Calculations 1. To show how very large or very small numbers can be expressed in scientific notation 2. To learn the English, metric,

Lab 1 B Objectives 1.Calibrate a thermometer 2.Dimension analysis 3.Generate a graph on excel.

1 Chapter 3 Problem Solving and Conversion Factors.

Proportional Relationships b Stoichiometry mass relationships between substances in a chemical reaction based on the mole ratio b Mole Ratio indicated.

The Metric System UNITS OF MEASUREMENT Use SI units — based on the metric system LengthMassVolumeTimeTemperature meter, m kilogram, kg seconds, s Celsius.

Section 5.1 Scientific Notation and Units 1.To show how very large or very small numbers can be expressed in scientific notation 2.To learn the English,

1 Chapter 3 Problem Solving and Conversion Factors.

© Copyright Pearson Prentice Hall Slide 1 of 43 Conversion Problems > 3.3 Conversion Factors A _____________ _________________ is a ratio of equivalent.

1 Chapter 3 Problem Solving. 2 Word Problems n The laboratory does not give you numbers already plugged into a formula. n You have to decide how to get.

Lab 1 B Objectives 1.Calibrate a thermometer 2.Dimension analysis 3.Generate a graph on excel.

Unit 2:SCIENTIFIC MEASUREMENT

Easy to assess and grade

1.To learn how dimensional analysis can be used to solve problems 2.To learn the three temperature scales 3.To learn to convert from one temperature scale.

Solving Mole Problems 2 steps Section 3 Counting Atoms Chapter 3.

Physics Problem Solving  Objectives  Systematic Approach  Prefix Conversion  Dimensional Analysis  Significant Figures  Precision & Accuracy  Error.

Counting Atoms. 1/25 Today you will need… A lab paper from side lab table, a calculator, a periodic table, and ONE partner. You can sit next to your partner.

DO-NOW The density of osmium, which is the densest metal, is g/cm3. What is the mass of a block of osmium that measures 1.00cm x 4.00cm x 2.50cm?

3.3 Conversion Problems Conversion Factor - A conversion factor is a ratio of equivalent measurements. Examples: 1 dollar = 4 quarters = 10 dimes 100 cm.

Counting Atoms and Moles Chapter 3.4 us us.

Chapter 4 Notes Dimensional Analysis. In Chemistry and every-day life you will often need to express a measurement using a different unit than the one.

3.3 Solving Conversion Problems > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 3 Scientific Measurement 3.1 Using.

Kinetic Energy Energy an object possesses when in motion. Law of Conservation of Energy – in any physical or chemical change, energy can change form,

CHEMISTRY TUESDAY, 9/15 As you come into class, please take out: 1.your significant figures notes from last class 2.Something to write with 3.Calculator.

Bell Ringer The mass of a copper cylinder is grams. If the mass of one copper atom is 1.06 x g, how many copper atoms are there in the cylinder?

Scientific Measurement. Measurements and Their Uncertainty Measurement – quantity that has both a number and unit Measurement – quantity that has both.

3.3 Solving Conversion Problems > 1 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved. Chapter 3 Scientific Measurement 3.1 Using.

( ) Error and % Error Page 6 Pages 1-5 are for a Table of Contents

8.6 Volume and Moles, Avogadro’s Law

Changing the Units of Measurement

Dimensional Analysis.

Problem Solving in Chemistry

DENSITY - an important and useful physical property

Imagine This! You’re driving along a highway in Mexico when you notice this sign What should your speed be in miles per hour?

Objectives To learn how dimensional analysis can be used to solve problems To learn the three temperature scales To learn to convert from one temperature.

Dimensional Analysis In which you will learn about: Conversion factors

Chapter 4: Problem Solving

Chapter 3 Scientific Measurement 3.3 Solving Conversion Problems

Densities of Some Common Materials

Objectives Calculate the density of a sample using mass and volume.

Dimensional Amalysis.

Chemistry Dimensional Analysis.

SL#14 How to use Conversion Factors (a.k.a. Dimensional Analysis)

Stoichiometry Stoichiometry is a fancy chemistry word meaning “to calculate quantities in a chemical reaction”. Or in other words, if I mix this much of.

Stoichiometry Follow along in your text Chapter 9 Section 1 Pages 302 – 311 Put on Pg.33 of your notebook!

11/29 Opener How should you act when we have a substitute? What would proper movie etiquette look like?

Presentation transcript:

3.4 Dimensional Analysis In dimensional analysis you use the units (dimensions) that are part of measurements to help solve (analyze) the problem In dimensional analysis you use the units (dimensions) that are part of measurements to help solve (analyze) the problem When using conversion factors in dimensional analysis always use the conversion factor that has the unit of the known in the denominator When using conversion factors in dimensional analysis always use the conversion factor that has the unit of the known in the denominator This cancels the known unit and gives the answer in the unknown units This cancels the known unit and gives the answer in the unknown units Example page Example page 65-66

3.4 Practice

Step 1 – Unknown: Step 2 – Known/Given: a. mass of copper = 50.0 g b. each student uses 1.84 g Cu Step 3 – Plan a solution: Conversion Factor: 1 student 1.84 g Cu number of students

3.4 Practice Step 4 – Calculation: Step 5 – Finish: 50.0 g Cu 1 x 1 student 1.84 g Cu = 50.0 students = students 27 Students

3.4 Practice 10. A 1.0° increase on the Celsius scale is equivalent to 1.8° increase on the Fahrenheit scale. If the temperature increases 48.0°C, what is the corresponding increase on the Fahrenheit scale? 11. One of the first fillings used to fill cavities in teeth consisted of 26.0 g of Ag, 10.8 g of Sn, 2.40 g of Cu, and.800 g of Zn. Determine how many grams of silver are in 25.0g of the filling.

3.4 Practice 12. Have you ever found yourself sitting through class and counting the minutes until it was over? If there is hour remaining in class, how many seconds remain?