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¿Por qué hay cosas que explotan?
Chemical Magic Unit | Lesson 5 of 5

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¿Por qué hay cosas que explotan?

Chemical Magic Unit | Lesson 5 of 5
Lesson narration:
English Spanish
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CONVERSEMOS:

¿Qué hace que las cosas exploten? ¿Qué está sucediendo?

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CONVERSEMOS:

¿Por qué crees que los contenedores se rompían?

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Paso
01/13
Encuentra un compañero o una compañera con quien trabajar.
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Paso
02/13
Obtén estos materiales.
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Paso
03/13
Conversemos:
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Paso
04/13
Decidan quién será el Dueño de la Bolsa y quién será el
Encargado del Vaso.
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Paso
05/13
Encargado del Vaso: aplana el vaso y luego, córtalo.
Dueño de la Bolsa: pon una cucharada de bicarbonato de sodio
en el vaso.
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Paso
06/13
Dueño de la bolsa: mantén la bolsa abierta en el plato, así.
Encargado del Vaso: pon seis cucharadas de vinagre en la bolsa.
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Paso
07/13
Dueño de la bolsa: sigue manteniendo la bolsa abierta.
Encargado del Vaso: coloca el vaso con cuidado en la bolsa. Ciérrala.
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Paso
08/13
Encargado del Vaso: fíjate otra vez que la bolsa esté bien cerrada.
Voltéala para que el bicarbonato de sodio caiga y, rápidamente,
coloca la bolsa sobre el plato.
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Paso
09/13
Platica con tu compañero o compañera sobre lo que sucedió.
Contesta la pregunta número uno en tu hoja de trabajo. Vas a
describir qué pasó.
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Paso
10/13
Esto fue lo que pasó en nuestra bolsa. Conversemos:
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Paso
11/13
Haz un dibujo que muestre por qué se infló la bolsa en la pregunta
número dos de tu hoja.
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Paso
12/13
Contesta las preguntas número tres y cuatro en tu hoja de trabajo.
Vas a decidir cómo vas a cambiar el experimento.
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Paso
13/13
Vuelvan a intentar el experimento. Describan sus resultados en la
pregunta número cinco en su hoja de trabajo.
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CONVERSEMOS:

En la parte de atrás de tu hoja, haz un dibujo usando un modelo de partículas para explicar por qué explotó la bolsa. (O puedes agregarle detalles al primer dibujo que hiciste).

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Paso
01/10
Forma un equipo de cuatro personas. Si estás trabajando sola
o solo, necesitarás la ayuda de unos amigos o amigas.
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Paso
02/10
Decidan quién será el Líder del equipo y quiénes serán las
Partículas #1, Partículas #2 y Partículas #3. El Líder del equipo
también será las Partículas número 4.
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Paso
03/10
Obtén tus materiales.
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Paso
04/10
Hay cuatro bolsas elásticas en la hoja de trabajo, una para cada
miembro del equipo. Líder del equipo: corta la hoja en cuatro
secciones y dale una a cada persona.
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Paso
05/10
Corta a lo largo de la línea gruesa para recortar el rectángulo.
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Paso
06/10
Dobla tu “bolsa elástica” así. Corta a lo largo de la línea de en
medio hasta llegar a la señal de “alto”.
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Paso
07/10
Dobla tu papel a lo largo, así. Corta a lo largo de todas las otras
líneas punteadas, de esta forma.
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Paso
08/10
Líder del equipo: estira una de las bolsas elásticas de esta
manera para asegúrate de que todo esté bien cortado.
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Paso
09/10
Líder del equipo: sostén una bolsa así. Partículas #1: pon ambas
manos dentro de la bolsa. Todas las demás Partículas: también
metan sus manos.
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Paso
10/10
Conversemos:
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Slide Image

explosión


1 de 11

cuando algo sale volando
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Slide Image

sustancia


2 de 11

un material con propiedades específicas

reacción química


3 de 11

un proceso mediante el que una o varias sustancias forman una sustancia nueva
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estados de la materia


4 de 11

las distintas formas en la que se puede encontrar la materia: sólido, líquido, o gas
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líquido


5 de 11

un estado de la materia, por ejemplo el agua cuando se puede verter
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gas


6 de 11

un estado de la materia, por ejemplo, el vapor
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dióxido de carbono


7 de 11

un tipo de gas que las plantas ingieren y que los animales liberan al respirar
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oxígeno


8 de 11

un tipo de gas que los animales respiran y que las plantas liberan
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partícula


9 de 11

algo pequeñísimo, a veces tan pequeño que no podemos verlo
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experimento


10 de 11

una prueba que se usa para descubrir más información sobre una pregunta
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modelo


11 de 11

una versión de mentiras de algo que los científicos usan cuando la cosa de verdad es algo demasiado grande, pequeño, o complicado para poder usarlo en sus estudios
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Lesson narration:
English Spanish

Grade 5

Chemical Reactions & Properties Of Matter

Gases & Particle Models

5-PS1-1

Activity Prep

Print Prep
In this lesson, students investigate and model how gases cause explosions. In the activity, Bag of Bubbles, students experiment by combining baking soda and vinegar inside a sealed bag and observe how the gas bubbles produced cause the bag to inflate–and sometimes pop!
Preview activity

I have a Mystery Pack

Capturing Chaos worksheet 30 copies
Stretchy Bag Templates printout Print 8 copies
Clean-up Supplies (Eg. Paper Towels)
1 roll
Safety Glasses
30 pairs
Scissors
30 pairs
Baking Soda
4 cups
Dixie Cups (3 oz)
30 cups
Measuring Cup
1 cup
Plastic Plates (10")
You can also use large, sturdy paper plates.
Details
15 plates
Plastic Spoons
30 spoons
Solo Cups (9 oz)
You can use any plastic container that can hold about 1/2 cup of liquid.
Details
16 cups
White Vinegar
4 cups
Ziploc Bags (Snack Size)
We do not suggest using sandwich size bags because they need more vinegar and baking soda to inflate, and the resulting explosion is likely to overflow the plastic plate.
Details
30 bags
Prep Instructions

We strongly recommend that students wear eye protection for this activity.

We suggest students work in pairs for the first activity, and in groups of four for the second activity. Students working alone will need a partner for the first activity, and a few friends to help with the second activity.

Prepare the Vinegar and Baking Soda

Divide your plastic cups (or plastic containers) in half. For each of the cups in one of the piles, pour about ½ cup of vinegar. For the other cups, pour about ½ cup of baking soda into each.

Separate Supplies for Easy Distribution

For the first activity, students will need the following supplies, plus a recommended pair of safety goggles for each person:

Bag of Bubbles Supplies

In the second activity, students will work in groups of four and will need the following materials:

Bag of Bubbles Model Supplies

You may want to separate these for ease of classroom distribution.

Exploration

11 mins

Hands-On Activity

30 mins

Wrap-Up

4 mins

Grade 5

Chemical Reactions & Properties Of Matter

Gases & Particle Models

5-PS1-1

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Chemistry Lesson 5: Why do some things explode?

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