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Good Morning/Afternoon! Please sit with your group. Take out journal with homework and pen/pencil. Quietly, be ready for class.

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Agenda Reminders (Recordatorios) 2. Homework 3. Introduction 4. Activity # 9: Measuring Mass, Calculating Density (Actividad #9: Midiendo Masa, Calculando Densidad)

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Reminders (Recordatorios) Science Fair (Feria de la Ciencia) List of Topics for Review of Literature, due Friday, October 4 th (Lista de Tópicos para la Revisión de la Literatura) o just main topics/headings (sólo los tópicos/títulos principales) Materials and Procedures, due Friday, October 11th (Materiales y Procedimientos, entrega viernes 11 de Octubre) o List of materials and steps for procedure (lista de materiales y pasos del procedimiento) Hispanic Heritage Month Project, due October 18 (Proyecto del Mes de la Hispanidad, entega Octubre 18)

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Homework 1.Work on (Trabajar en): 1.Hispanic Scientist/Inventor (Científico/Inventor Hispano) 2.Science Fair Project (Proyecto Feria de la Ciencia) Review of Literature (Revisión de la Literatura): List of Tentative Content (Lista tentativa del contenido) Materials and Procedures Materiales y Procedimeintos)

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Introduction Students were be able to (Los estudiantes fueron capaces de): –Determine the volume of different solids applying two different methods (Determinar el volumen de diferentes sólidos aplicando dos métodos diferentes): Water displacement (Desplazamiento de agua) Measurement and calculation (Medición y Cálculo)

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Objective Students will be able to: –Identify the two metallic solids from the unknown mixture based on data about density.

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Purpose Students will be able to (Los estudiantes serán capaces de): –Determine the identity of metallic solids based on data about density (Determinar la identidad de metales sólidos usando datos de densidad).

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Activity #9: Measuring Mass, Calculating Density, Part 1 (Actividad #9: Midiendo Masa, Calculando Densidad, Parte 1) 1.Set up Activity 9, p. A36 (Preparar Actividad 9, p.A36) 2.PRE-LAB: mass, quantitative measurement, density (PRE-LAB: masa, medición cuantitativa, densidad). 3.DATA (DATOS): Copy Table 1 Mass, Volume and Density of Six Objects, p. A38 (Copiar Tabla 1 Masa, Volumen y Densidad de Seis Objetos, p. A38).

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Table 1: Mass, Volume and Density of Six Objects ObjectMass (g)Volume (cm³ or mL) Density CalculationDensity (g/cm³ or g/mL) Light gray bar Dark gray bar Light gray cube Dark gray cube Light gray cylinder Dark gray cylinder

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Tabla 1: Masa, Volumen y Densidad de Seis Objetos ObjetoMasa (g)Volumen (cm³ o mL) Cálculo de la Densidad Densidad (g/cm³ o g/mL) Barra gris claro Barra gris oscuro Cubo gris claro Cubo gris oscuro Cilindro gris claro Cilindro gris oscuro

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Activity #9: Measuring Mass, Calculating Density, Part 1 (Actividad #9: Midiendo Masa, Calculando Densidad, Parte 1) Read Introduction, p. A36 (Lea la Introducción, p. A36). How do you calculate density? (¿Cómo calcula la densidad?)

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Measuring Mass (Midiendo Masa) Three-Beam Balance (Balanza de Triple Escala)

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0-100 gram scale gram scale 0-10 gram scale

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Measuring Mass (Midiendo Masa) Read and follow steps p. A37 (Lea y siga los pasos p. A37). Make sure to record your data (Asegúrese de anotar los datos). Activity #9: Measuring Mass, Calculating Density, Part 1 (Actividad #9: Midiendo Masa, Calculando Densidad, Parte 1)

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Calculating Density (Calculando Densidad) Read and follow steps p. A38 (Lea y siga los pasos p. A38). Make sure to complete your table (Asegúrese de completar la tabla). Activity #9: Measuring Mass, Calculating Density, Part 1 (Actividad #9: Midiendo Masa, Calculando Densidad, Parte 1)

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