Why units matter.. How tall am I? 58 How meaningful is this information? How do we make it more meaningful? A number is useless unless a unit is attached.

Slides:

Advertisements

Similar presentations

Chemistry Stoichiometry: Moles Science and Mathematics Education Research Group Supported by UBC Teaching and Learning Enhancement Fund Department.

Advertisements

(Stoo-eek-ee-aam-et-ry)

Stoichiometry What do I get when I have????.

Created by Dr. Dan Branan Stoichiometry Chemical Formulas Balancing Equations Limiting Reactant Problems Chemical Formulas Balancing Equations Limiting.

Limiting Reagent Coach Cox.

Mental Maths Learning Objective I can count in 2s, 5s and in fractions.

Limiting Reagents This program will help you better understand stoichiometry problems with a limiting reagent.

Unit 06 The Mole Theory Ch. 4 and 7.

Problem Solving Chemistry: it makes sense!

Chemical Calculations: Formula Masses, Moles, and Chemical Equations.

Section 1: Measuring Matter

What happens when acids and bases mix?

Problem of the Day Problem of the Day next Using a Calculator.

Chemistry Stoichiometry: Mole Ratios Science and Mathematics Education Research Group Supported by UBC Teaching and Learning Enhancement Fund

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.

Using Chemical Formulas

Prime Factorization.

 The Mole Chemists have adopted the mole concept as a convenient way to deal with the enormous numbers of atoms, molecules or ions in the samples they.

Stoichiometry The Mole: Review A counting unit Similar to a dozen, except instead of 12, it’s 602,000,000,000,000,000,000, X (in scientific.

Student will learn: mole stoichiometry problems mass stoichiometry problems volume stoichiometry problems Student will learn: to calculate amount of reactants.

Conversion Factors. In chemistry, it is often useful to be able to convert from one unit of measure to another For example: mass of a substance converted.

Balancing Chemical Equations. Why do we need to Balance Chemical Equations? The Law of Conservation of Mass The # of atoms must stay the same on both.

Matter Learning Targets and Success Criteria

Krystina Gorman. Students will understand the whole idea of calorie consumption. This adds a mathematical approach as well, being that calories make up.

Business in Our Economy

Unit 06 The Mole Theory Ch. 4 and 7. Dimensional Analysis ● just converting one thing to another Problem 1 : How many seconds are in a day? sec day What.

Research? What’s Research?. Is this you??? How can we make sure we don’t end up like the tie-dyed bear?

Stoichiometry & the Mole. Dimensional Analysis Review How many seconds are in 5.0 hours?

Chemical Quantities.  Chemistry is a quantitative science  There are three typical ways in which we measure the amount of something  By count  A dozen.

Chapter 10 Stoichiometry Or One plus One isn’t always Two.

Why Bother. I have a Calculator!  You might press a button wrong. It is good to have an idea of what your answer should be.  These visualizations and.

Classifying Matter Quiz Page a) element b) compound c) Homogeneous Mixture d) Heterogeneous Mixture 1. a) element b) compound c) Homogeneous Mixture.

Stoichiometry Chemistry I: Chapter 9 Molar Mass of Compounds The molar mass (MM) of a compound is determined the same way, except now you add up all.

Agenda: 4/21 Objective: To determine quantities needed for chemical reactions in research or manufacturing: Stochiometry Review: Set up of Stoichiometry.

Unit 1- Matter and Measurement Chapter 1 in text book Day 1.

Stoichiometry The Mole: Review A counting unit A counting unit Similar to a dozen, except instead of 12, it’s 602,000,000,000,000,000,000,000 Similar.

The Mole Theory. Dimensional Analysis A way to solve problems by converting or using the units of the items involved Converting one thing to the another.

Stoichiometry The Mole A counting unit A counting unit Similar to a dozen, except instead of 12, it’s 602,000,000,000,000,000,000,000 Similar to a dozen,

Calculator Questions & Answers. When can I use a calculator?

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

Dimensional Analysis The importance of units in calculations.

Dimensional Analysis.

CHAPTER 1 The Science of Chemistry 1.3 Matter and Energy.

Section 5.5 – Using Customary Units of Measure pages

Tro's Introductory Chemistry, Chapter Problem Solving and Dimensional Analysis.

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.

It’s time to learn about.... Stoichiometry Stoichiometry : Mole Ratios to Determining Grams of Product At the conclusion of our time together, you should.

Prime Factorization. What is Prime Factorization? The process of converting a number into a product of prime numbers.

Laura Conrad Teaching Stoichiometry Using Recipes: Quick! Quick! Easy! Easy! Student-Friendly! Student-Friendly!

Chapter 12: Stoichiometry WASILLLA HIGH SCHOOL

Ch. 12 Stoichiometry Objective: To learn how to use a complete chemical equation to calculate quantities of a substance.

Stoichiometry CHEMISTRY 11 MS. MCGRATH. What is Stoichiometry? The study of the quantities of reactants and products in a chemical reactions, ie. the.

UNITS IN CHEMISTRY. TEMPERATURE Farenheit- Scale most commonly used in the US; based on cooling brine and body temperature (100 F was supposed to be about.

Chapter 12 Stoichiometry

AP Chemistry Unit 3 – Stoichiometry

Section 1: Measuring Matter

Stoichiometry Chemistry 11 Ms. McGrath.

Chapter 10 Stoichiometry

Add to table of Contents:

Molecular Mass.

Chapter 10:The Mole 10-1 Measuring Matter Counting Particles…

Chemistry Stoichiometry: Mole Ratios

Chemistry & Cooking What do you like more – food or Chemistry? Don’t rush your answer, really think about it I’m sure I know what you answer will be.

Stoichiometry What do I get when I have????.

Dimensional analysis Why units matter..

10.1 The Mole: A Measurement of Matter

Presentation transcript:

Why units matter.

How tall am I? 58 How meaningful is this information? How do we make it more meaningful? A number is useless unless a unit is attached. The unit provides the scale you are working in.

To swim for you life or not What would help you get an idea of whether or not you should stay out of this sharks way?

Having a scale reference gives more info

Changing between units 58 inches. What other numbers does this value represent?

Why does this matter in chemistry? Can you count the number of atoms you are mixing? How do you measure chemicals? If you are making 4 bicycles how many wheels do you need? We do the same kind of converting with chemical equations. If I know how much salt I need then I can use conversion (dimensional analysis) to determine the amount of acid & base I need to mix together.

Practical applications How are cereals & chips packaged? The manufactures determine the number of packages they need to produce then back track to determine the amount of ingredients needed. Buying hardware in bulk. Money transactions. Other examples?

My way or the highway You will show your work when you do calculations. You will perform dimensional analysis using the strategy I outline. I will not give credit for any other strategy. I mean it. This is the one exception to the my general philosophy of wanting you to use whatever works for you to arrive at the correct answer. & I have a good reason for it. Let’s practice calculating my way.

Other resources Conversion factors ppt by Normal Community High School Chemistry department in Normal, IL. Conversion factors ppt