PPT-Moles and Solutions - Concentrations

Learning Objectives Calculate the amount of substance in moles using solution volume and concentration Describe a solutions concentration using the terms concentrated and dilute Key Words. Solutions. A.  . solution.  . is a homogeneous mixture of two or more substance. A solution is generally composed of two substances. Solute: substance that is being dissolved and is in smaller quantity. TDD Process. TDD Process. Code. TDD Process. Code. The Known State. Can be accomplished by:. Initializing or setting the properties and fields of the tested object. Emulating external dependencies (mocking or stubbing). SOLUTIONS & CONCENTRATIONS. WHAT IS A SOLUTION ?. WHAT IS CONCENTRATION & HOW IS IT MEASURED ?. IS DISSOLVING A CHEMICAL OF A PHYSICAL PROCESS ?. IF SUGAR IS DISSOLVED IN WATER IS ITS CHEMICAL NATURE CHANGED ?. Discuss your ideas with the people at your group and then write your answer down.. Vocabulary. Solute. substance which is . dissolved. The . minority. . substance in the mixture. Aqueous solution: solution where . Measuring percentage transmittance of solutions at different concentrations. Concentrations that . absorb. Measuring percentage transmittance of solutions at different . concentrations. Objective. The purpose of this activity is to relate light absorbance and . Mixture: a . combination of two or more substances that do not combine chemically, but remain the same individual substances; can be separated by physical . means.. Two types:. Heterogeneous. Homogeneous. 8.1. Solutions. 2. Solutions: Solute and Solvent. Solutions. are homogeneous mixtures of two or more substances. consist of a solvent and one or more solutes. 3. Solutes. spread evenly throughout the solution . The Review!. (you need a periodic table, piece of scrap paper, and calculator). Review Game Rules. I will ask a question to the class.. Each participant (that’s you) . writes down. the answer silently.. By: Skye Smith. What is Mass?. Mass can be defined as a quantitative measure of an object's resistance to the change of its speed. . Scientifically speaking, mass IS different than weight, which is the measure of a planet’s gravitational force on an object. 23 . particles. . So a “mole” is a number, very similar to a dozen. . A dozen = 12 . A mole (mol) = 6.022 x 10. 23. It can be found in your reference packet on page one. Avogadro’s number = 6.022 x 10. DE Chemistry. Dr. Walker. Solutions. In a solution, the excess material is the . solvent. , the smaller amount is the . solute. Measuring Solution Composition. Molarity is most common, covered previously in Chapter 4. Solutions are classified as mixtures.. The a. mounts of substances mixed (solute and solvent) can vary in different solutions.. Concentration. is a way of communicating how much solute is dissolved into a given amount of solution.. M. ). number . of . moles of solute . (n) per . liter (L). of . solution. Molarity (. M. ) = . Moles of Solute. . Liters of Solution. Note: Moles = . Mass of Solute. Molar Mass of Solute. 3.3: Molarity. Describe the fundamental properties of solutions. Calculate solution concentration using molarity. Perform dilution calculations using the dilution equation. Solutions. Remember that .