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¿Por qué hay cosas que explotan?

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¿Por qué hay cosas que explotan?
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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Featured Reviews

“The kids loved the explosion and excitement of this lesson. Very easy, minimal mess, and very fun! ”
· Carly · Teacher
“This was a great twist on a known chemical reaction. The kids had to use what they know to adjust the reaction to act in a controlled manner. The videos were quick and useful to streamline the learning and the experiment! Awesome!”
· Stacy · Teacher
“The kids did this on their own with me only walking around and observing. They did great and I LOVED the scientific talk I heard as I observed!”
· Kimberly · Teacher
“The students loved the bags popping! This was a great visual for this lesson and easy assembly for multiple classes.”
· Sandra · Teacher
“The students were so engaged and really paying attention. When I was evaluated - the students were using correct scientific terms and could explain what was happening to the principal. It was by far their favorite lesson! I just love how mystery science is engaging and goes right along with our curriculum!”
· Kelli · Teacher
“My students LOVED this Mystery! This lesson was so engaging and insightful. When their bags exploded, they got so excited and wanted to know more and do more. Absolutely love Mystery Science!!”
· Reina · Teacher
“Great investigation, with a direct link to NGSS performance expectation around creating a particle model to show the results of a chemical reaction. ”
· Andrea · Teacher
“I was worried about the explosions making a dreadful mess, but it was actually very easy to clean up! Kids LOVED it!”
· Tessa · Teacher
“Student's were engaged each minute! They were able to associate events in their lives at home directly to the lesson. They are also beginning to grasp a deeper understanding of the scientific process and are able to construct new questions, experiments and conclusions based on prior knowledge of previous lessons taught.”
· Jackie · Teacher
“The best part were the step by step directions. The students enjoyed the experiment and had a lot of fun with it. ”
· Edjola · Teacher
“The intro to the activity was perfect for engaging students and getting them interested. Also, it was fairly easy to set up and clean up. ”
· · Teacher
“Boom! Pop! 5th Graders loved this Mystery Science Activity and it was easy to set up. Testing twice was essential to scientific thinking, students planned and got to do it again!”
· Nicole · Teacher
“Having the videos support and inspire the learning. Also, the step by step instructions which made it so easy for myself and students”
· Fiona · Teacher
“I love that there were step by step directions to do the experiment! Very well put together. Thank you.”
· Kimberly · Teacher
“The student's reactions were priceless. This was our last Mystery Science for the year and it was definitely a favorite. ”
· Ofelia · Teacher
“The students loved this activity and learned a lot about how chemicals react when combined. ”
· · Teacher
“This was their favorite experiment so far!”
· Sondra · Teacher
“I think this was one of my students' favorite mysteries so far. They absolutely loved the challenge if making the bag burst or almost burst. I am so happy you guys added this Mystery! Thank you!”
· · Teacher
“Watching the reactions of students as they watched the baking soda and vinegar react. Using the plastic baggie allowed the students to observe what was happening and then be able to state their observations more clearly.”
· Rita · Teacher
“Despite being pretty sure what would happen, the gasps and squeals were a delight. ”
· Nate · Teacher
“The excitement! The students kept trying different things to see whose would explode first, the loudest, etc. Great lesson and they learned a lot!”
· Deborah · Teacher
“We loved doing this activity. We also got to end our explosion unit by watching the SpaceX rocket launch!”
· Kathy · Teacher
“Students excitement was memorable; they were able to make connections to the assignments we have been completing in class. ”
· Daniela · Teacher
“The kids loved the experiment. We even took it a step further and used a water bottle instead of a plastic bag. ”
· Cassie · Teacher
“We had an explosion of excitement in the room! The students were able to discuss the reasons why the bags should explode, although on the first try, none did. They really enjoyed being able to evaluate, make changes to reach their goal of exploding bags, and retest...100% success rate of exploding bags!! ”
· Brenna · Teacher
“The easy to use setup and recording sheet was perfect for showing the power of gaseous matter! I love it's simple effectiveness!”
· Stephanie · Teacher
“The best part was when the students turned the bags over and saw the bags expand. I have never seen my students so excited.”
· Josephine · Teacher
“The kids loved trying to change things to get the opposite effect of what happened. And of course, loved the explosions! ”
· Cathy · Teacher
“The kids loved getting to modify their experiment and get a second chance!”
· Amy · Teacher
“Perfect Lesson”
· Roklyn · Teacher
“My class was so engaged in the activity! Every single one of their bags popped (which I was not expecting!) and their reactions were hilariously priceless! What I loved the most is how they were able to apply all the information we have been learning about phases of matter. The gained so much knowledge by doing this and they didn't even realize it! ”
· Lena · Teacher
“The kids loved the popping bags! They were screaming "this is awesome!" ”
· Karen · Teacher
“the students loved the stretchy bags. ”
· Wanda · Teacher
“Explosions worked as a great engagement tool, just enough chaos, but well contained! ”
· Krista · Teacher
“What a wonderful finale lesson! My children thought that they knew all about the result of baking soda/vinegar but were surprised when some of the sealed bags popped! Many partners asked for more than the second try to get the desired result of attempting to get a different result. I am, as always so grateful for this wonderful resource. Mystery Science makes every lesson one that the children (and the teacher) are learning while having fun. ”
· Bridget · Teacher
“The exploding baggie was a big hit and the kids really understood it was the gas trying to escape The extra on bread was a big hit too!”
· Teresa · Teacher
“The kids loved watching the ziploc bags expand and explode! The model (of what happened in the experiment) helped them to visualize what happened”
· Tiffany · Teacher
“The best part of mystery 5 was Experiment 2. Many of the bags did not burst the first time (b/c they followed the mixing ratio correctly) so the students were super excited to not only pop their bags but also to see who could get the most dramatic pop. ”
· · Teacher
“The kids loved this experiment! We had a lot of screams from excitement!”
· Carmen · Teacher
“Kids were so excited when the baggie popped. They really understood the lesson.”
· Jennifer · Teacher
“I have never seen kids so excited in my life. Great lab!”
· Stephanie · Teacher
“My students loved this mystery! It was one of their favorites that we have done. ”
· Nicole · Teacher
Lesson narration:
English Spanish

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 1 per student
Stretchy Bag Templates printout 1 per group
Clean-up Supplies (Eg. Paper Towels)
1 roll per class
Safety Glasses
1 pair per student
Scissors
1 pair per student
Baking Soda
4 tablespoons per pair
Dixie Cups (3 oz)
1 cup per student
Measuring Cup
1 cup per class
Plastic Plates (10")
You can also use large, sturdy paper plates.
Details
1 plate per pair
Plastic Spoons
2 spoons per pair
Solo Cups (9 oz)
You can use any plastic container that can hold about 1/2 cup of liquid.
Details
2 cups per group
White Vinegar
1 cup per 8 students
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
1 bag per student
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

Extend this lesson

Vocabulary

Vocabulary

Student slideshow: English | Spanish

Teacher printout: English & Spanish

Unit Reading

Unit Reading

The Great Molasses Flood

In this reading, students learn the story of a chemical reaction that caused a huge molasses tank to explode in Boston in 1919.

Activity

Activity

Follow these instructions, to fill a balloon with carbon dioxide, the same gas that filled your plastic bag. Try the experiment, and then:

  • Draw a picture that shows what makes the balloon inflate.
  • Predict what will happen if you pinch the neck of the inflated balloon, take it off the bottle, then let it go. Draw a picture that shows what’s happens when you do that — and why it happens.

If you have time, experiment to figure out what ratio of baking soda to vinegar produces the most gas (and the biggest balloon).

Transcripts

Credits
 
Chemistry Lesson 5: Why do some things explode?

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