Reaction in a Bag

Hold a reaction in your hand, literally, as students observe and ask questions.
This video is part of the Flinn Scientific Best Practices for Teaching Chemistry Video Series, a collection of over 125 hours of free professional development training for chemistry teachers - elearning.flinnsci.com
ATTENTION: This demonstration is intended for and should only be performed by certified science instructors in a safe laboratory/classroom setting. Be sure to subscribe and check out more videos!
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[@maddithiesen3715]

I'm learning more from you than my own teacher .

[@roccosteven8731]

I know I'm quite off topic but does anybody know a good website to stream new tv shows online?

[@mjm.2984]

For everyone who needs to take observations for class :((( here: Once the Phenol Red was mixed into the other ingredients, the mixture began to fizz, followed by the color changing yellow. One end of the bag was hot and the other cold, because the liquid is endothermic. As the mixture continues to fizz, you can see there's an evolution of gas where the bag is swelling up. This chemical reaction has a generation of gas, its exothermic, endothermic and color changing. Another observation is, if you put your ear next to the bag you are able to hear the fizzing that is happening because of the chemical reaction. When water is added to the bag, an orange and red color begins to show.

[@sickgirlx3]

thank u bro

[@emmavlogs9912]

Bro understood the assignment (thanks)

[@thecreature916]

Bro we salute you

[@kennedikids6606]

Doing the lords work omggg

[@tyler1332]

AYE WHERES MY CLASSMATES AT?!

[@mohak1338]

bruh this was recorded on a Nokia 3310.

[@zipsip6677]

This video was like 8 years ago

[@ms80snostalgia]

Im going try to go through all of the free hours of trainings as much as possible. Thank you.

[@Krim410]

So here’s a question? Bottled waters contain both and with that are people gassy do to drinking large amounts of water quickly?

[@ellencunningham6191]

we do this in middle school. Kids do a great job!

[@user-zw7wn1rl2t]

yall are all saying hs chem but im in 6th grade and this is part of my assignment .

[@bunni1544]

Lmao fr tho

[@mak3nuh]

bruh i have to do this for school

[@little.duckling]

I did this today and wanted to show my parents

[@wvairgunssportsman8886]

I'm trying to figure out a recipe. I want to mix these chemicals with sugar or molasses and I want it to harden when mixed on top of my salt block. Is it safe .

[@prestonchannette5901]

Any body here for a missing assignment

[@zayunknown8657]

We did this in class first reaction was a thermal reaction the bag got hotter and it changed color

[@DarkuE7]

why y'all put cheese on my cheeseburger

[@wendystjean5599]

Can you dispose of the finished bags in the garbage can?

[@squidge2340]

I breathed it in accidently

[@Iperlypop]

Did the mass changed after the reaction?

[@mituwalia3039]

Law of Conservation of Mass. Mass/Matter cannot be destroyed or created, so it obviously stayed the same. Hope it helped!

[@paola444abigail]

lmao where are my classmates at 💀✨

[@powerduk7872]

Imao here they are

[@paola444abigail]

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[@happy.drammallama1930]

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[@paola444abigail]

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[@Sleepy_Head-bo5rf]

hoi

[@superverylongnametoolongye2386]

Where my HS Chem homies at

[@johnathanvarghese8171]

🙋🏽‍♂️

[@noahwinson8780]

here

[@legoqui-gonjinn5350]

sup bro im here too

[@starchyhippo845]

yo whats up

[@Ripzzy]

Here bro

[@lucylvzlalo]

What causes the bag to inflate

[@DominicA24]

According to Flinn Scientific's instructions for this experiment, "Calcium chloride, baking soda, and water [which is probably part of the phenol red solution] combine to produce carbon dioxide gas.

[@mituwalia3039]

The appearance of gas is a sign of a chemical reaction. When substances mix, they can create gas naturally as a part of the reaction.

[@johnreeves8210]

YOUR FAT MOM

[@revan_1162]

What are the four indicators that a chemical reaction has occurred? plz help

[@1aurenn]

Color change, Oder change, Temperature Change, Change in Volume, Precipitant, Gas is given off

[@revan_1162]

@@1aurenn lol it was a joke, it was question from my online class

[@revan_1162]

@@1aurenn thanks tho

[@revan_1162]

@@1aurenn it’s find

[@phinkoplin9582]

Bro where the ccm bois at?

[@jeffreymcbob5172]

Why does it react

[@pakdanielkim]

makasih banyak

[@pakdanielkim]

can i comunicate with you ?in facebook, line or whatsapp, i have many questions, tks

[@kylerlinamen1830]

It's better if you use about 10ml of water also

[@maya-np6yl]

whos here from sicence class

[@tuna2873]

agony

[@henloitme4311]

pain, even

[@sickgirlx3]

fr

[@BigParadox]

Yes, experiments are important, and should be introduced as early as possible. I very much appreciate that view of the teacher here. However, I think the design of this experiment is quite bad, to be honest. It is too chaotic. The things one can (potentially or hopefully) learn from this experiment could be much better taught with a differently designed experiment.