PPT-Lesson 26 Percent Composition

Objectives          The student will determine percentage composition from formula data          The student will determine percentage composition of a hydrated salt. Lesson 28. Warm up. Submit Mole Conversion packages in basket, and copy the following upon arrival. Write-Pair-Share. What is the percent of the total composition of each ingredient in the following recipe (masses are fictitious):. Final Exam Vocabulary. Vocabulary for Final Exam. Objective: You will study and match words with definitions in order to review for final exam.. DRILL:. First 15 students- get . iPads. to look at definitions on . . 10/22/14. Define the following terms in your own way: . "percent by mass" . "percent by volume". Objective Tonight’s Homework. To determine the mass of each element in a compound. pp 208: 51, 52, 53, 54. Percent Markups. The difference between the selling price of a piece of merchandise and the price paid for it is called markup. For example, if a dealer purchases an item from the factory for $40 and sold it for $50, we say that the markup was $10. Ten dollars is 25 percent of $40 but is only 20 percent of $50. thus, the markup was 20 percent of the selling price and 25 percent of the purchase price. The store owner would say that the markup was only 20%, but the customer would say that the markup was 25%.. Percent Composition. . Percent Composition – . the percentage by mass of each element in a compound . Percent =. _______. Part. Whole. x 100%. So…. Percent composition. of a compound or =. molecule. C.4 Composition of Materials. Percent . composition. . the mass of a material found in a compound. . % composition = . mass of element in formula. x 100. . total mass of formula.  . Compounds are ALWAYS composed of elements in fixed ratios. This is often referred to as the . Law of Definite Proportions.. This law states that elements are always present in the same proportions by mass in a compound. I.e. H. In a group, calculate the percentage of flasks, owls, . Marios. , pencils & stars. What if this was related to mass? Calculate the % by mass for each of the objects.. 100 g. 20 g. 5. 0 g. 2 g. 6. Percent Composition. Percent . Composition – . the . percentage . by mass of . each . element in a . compound (*note: not the ratio of elements in the compound). Law of Definite Proportions . – compounds always contain the same proportions of elements by mass.. Session 1. Agenda. Introduction to the Module. Concept . Development. Module Review. Curriculum Overview of . A Story of . Ratios. Grade 7 Module 4 Overview. Questions to address:. How many topics are there and what are those topics?. Performance The students will play on an instrument conduct or sing gestures motives lines textures or phrases from their weekly work In addition MIDI performances or recordings are useful to get an Lesson 10.2: Blood Types. Lesson 10.3: Blood Disorders and Diseases . The Blood. Lesson 10.1. The Function and Composition of Blood. Chapter 10: The Blood. the function of blood. the formed elements. Percent Composition. ~percent by mass of atoms present in a compound. = (mass of atom). . (total molar mass) x 100. water is . 88.81 . % Oxygen and . 11.19 . % Hydrogen. O- 16.00/18.016 x 100 = . 88.81 . and Solutions. Atomic Mass and Formula Mass;. Mole & Molar Mass;. Percent Composition of Compounds;. Determination of Empirical & Molecular Formulas;. Molarity. Other Units for Solution Concentrations.