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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.

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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Page 1: Good Morning/Afternoon! Please sit with your group. Take out journal with homework and pen/pencil. Quietly, be ready for class

Good Morning/Afternoon!

• Please sit with your group.

• Take out journal with homework and pen/pencil.

• Quietly, be ready for class.

Page 2: Good Morning/Afternoon! Please sit with your group. Take out journal with homework and pen/pencil. Quietly, be ready for class

Agenda 09-23-2013

1. Homework

2. Introduction

3. Review Activity 6 (Revisión Act. #6)

4. Exit Slip 6 Ficha de Salida 6)

5. Activity 7: Identifying Solids, Part 1

(Actividad 7: Identificando los Sólidos,

Parte 1)

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Homework 1. Submit Science Fair Project

Assignment: Problem, Hypothesis, Variables and Control (Entregar tarea Feria de la Ciencia: Problema, Hipótesis, Variables y Control)

2. Complete Endorsements if needed (Completar permisos de ser necesario).

3. Analysis Questions # 1 & 2, p. A30. Activity 7 (Preguntas de Análisis # 1 y 2, p. A30. Actividad 7)

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Introduction In Activity 6, students were able to (En la Act. # 6,

los estudiantes fueron capaces de: Identify the liquids in the mixture based on different test

results (Identificar los líquidos en la mezclas con base en los resultados de las pruebas).

• Miscibility: water & ethanol (Mezcla con agua y ethanol)• Water content: cobalt paper(Contenido de Agua: Papel

de cobalto• Corrosiveness: pH paper (Corrosivo: papel de pH)• Toxicity: potassium thiocyanate (Toxicidad: cyanato de

potasio)• Flammability: flame test (Inflamable: Prueba de la

llama)

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Properties of Separated Liquids (Propiedades de los Líquidos

Separados)Test (Prueba) Liquid A (Líquido A) Liquid B

(Líquido B

Appearance (Apariencia)

Transparent, colorless (transparente, sin

color)

Dark orange (Naranja oscuro)

Miscible in water (Se mezcla en agua)

no yes

Miscible in ethanol ( se mezcla en ethanol)

no yes

Contains water (Contiene agua)

no yes

Corrosive (Corrosivo) no yes

Toxic (Tóxico) no Yes

Flammable (Inflamable)

yes no

Identity (Identidad)

mineral oil (aceite

mineral)

iron nitrate solution solución

de nitrato de hierro)

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Exit Slip 6 (Ficha de Salida 6)

Test (Prueba) Liquid C (Líquido C)

Miscible in Water (Se mezcla en agua)

Yes (si)

Miscible in Ethanol (Se mezcla en etanol)

Yes (si)

Contains Water (Contiene agua)

Yes (si)

Toxic (Tóxico) Yes (si)

• A student got these results from an experiment (Un estudainte obtuvo estos resultados).

• The student believes that the liquid is Iodine Solution (El estudiante cree que el líquido es Solución de Yodo).

• Did the student identify the liquid correctly? Explain using evidence from the table (El estudiante identificó el líquido correctamente?).

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Objective

Students will be able to (Los estudiantes serán capaces de):

– Identify the unknown solids found in the mixture by analyzing different test results (Identificar los sólidos presentes en la mezcla usando pruebas).

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Purpose

Students will be able to:

– Apply their new knowledge in the future to identify unknown solids (Aplicar el conocimiento nuevo en el futuro en la identificación de sólidos).

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Activity # 7: Identifying Solids (Actividad #7: Identificando Sólidos)

1. Set up Activity # 7, p. A26 (Preparar la Ac. # 7)

2. PRE-LAB: electrical conductivity, density,

evidence, reactivity (PRE-LAB: conductividad

eléctrica, densidad, evidencia, reactividad).

3. Copy Data Table p. A28 ( Copiar Tabla p. A28).

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Data Table: Properties of Separated Solids

Test red tubeTubo rojo

Black square cuadrado negro

Short cylinder cilindro corto

Long cylinder cilindro largo

Electrical conductivity

Density relative to water

Density relative to ethanol

Reacts with copper chloride

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Activity # 7: Identifying Solids, Part 1 (Act. # 7: Identificando Sólidos, Parte

1)1. Review Table 1: Test to Identify Solids (p. A29) and find

out (Revisar Tabla 1, p. A29):

• What is electrical conductivity? (¿Qué es conductividad eléctrica?)

• How do you determine the density of a solid? What is the evidence? ¿Cómo se determina la densidad de un sólido?)

• How do you know that a chemical reaction is occurring? ¿Cómo sabe que una reacción química ocurrió?)

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Activity # 7: Identifying Solids, Part 1 (Act. # 7: Identificando Sólidos, Parte

1)1. Teacher demonstration of procedure

(Demostración de la maestra)

2. Follow Procedure p. A28 (Seguir el Procedimiento p. A28)a. Be sure each solid is prepared for testing

(Asegúrese de prepara el sólido para la prueba)

b. For each solid, run the tests in Table 1, p. A29 (Para cada sólido, haga las pruebas en la Tabla 1, p. A29) .

c. Record your observations (Anote sus observaciones).