The Sci Guys: Science at Home - SE2 - EP4: Red Cabbage pH Indicator - Acid Base Indicator
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- Опубликовано: 30 июн 2024
- Welcome to the fourth episode of season 2 of The Sci Guys. In this episode we will be creating a ph indicator (acid base indicator) using red cabbage. Then we will be mixing different solutions into our red cabbage pH indicator and watch how the colour changes based on the pH of the solution. We will show you how you can explore this topic at home with a bunch of simple household items and at the end you will have a red cabbage pH indicator (acid base indicator) that you can use to test a variety of solutions around your house.
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Equipment and Ingredients:
Red Cabbage (1 red cabbage leaf per 2 cups of distilled water)
Distilled Water
Lemon Juice
Vinegar
Baking Soda
Tap Water
Alka-Selzer Antacid Tablets
Multiple Small Glasses
Blender
Funnel
Coffee Filter
Bowl or Other Container
Goggles
Lab Coat or Apron
Gloves
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why does everyone here recently (including me) need this for science homework ?
PLS HELP WHAT DO I DO ITS IN FOR TOMORROW LMAOOO
@@sasha-si7rj same lol
Ikr!?
I did for great works and often I like Science.
No clue lol
Who’s here for science homework
lmao, 11 months ago
everyone
me
For Hansen?
TMSBS nah
Yeah ;-;
These guys were ahead of their time. They knew that students will seek knowledge on the internet.
Ah yes, my favorite snack. refrigerated camera.
🤣🤣🤣😂
Pffftt
bruh
I need to watch this and finish my science project while the Corona virus
Jesus Christ
Same
Same
Ik aye, i have to answer a bunch of stupid question after watching this, its messing with my brain, like c'mon let us live. IM GONNA FREAKING GET MARKED FOR THIS
i have a 43 in science my mom is going to beat me this is why i cut
same lmao
For any science projects, here are the timestamps for when what happened with different solutions.
Ammonia: 2:38
Baking Soda: 2:45
Tap Water : 2:55
Alka-Seltzer Antacid tabs: 3:09
Vinegar: 3:32
Lemon Juice: 3:44
Thank you
am i the only one here using this for my science project. im copying everything i here
You're not the only one. haha
same
+grapezzzz19 no, im homeschooled and i need to look up everything!!
k lol
+Lizzy Hendrickson (Ironman) yep
who else is here because their teacher does'nt know what tf they're doing
Lol
Spoken from someone who likes watching cars go in a circle
*me*
Me too
Mr
I'm doing this because of my science lesson
me: enters the vicinity of the school
My science teacher: YOU CANT BREATHE OXYGEN WITHOUT SAFTEY GOGGLES!!!!
oh my
BHAHAHH
Pffttt
Wow! Never thought I'll get such a genuine project for my science expo in school.
pH indicator definition for people doing chem hw: A chemical compound that is used to visually determine if a solution is acidic or basic. Normally the indicator changes color depending on the pH of the solution it is testing.
wait so how do we know the number of the pH?
by their color, you can also calculate for the pH by using such formula of
-log of the given acid.
I was trying to figure out a way to do this and I found this channel. Really helpful and interesting!! Thanks
Thanks for posting this. I'm getting ready to do a similar experiment with my son, and it was helpful to get a sneak peek.
Thank you!! Oh my goodness! I needed this to do my homework.
I just found this channel and really enjoy it. Thanks for making science fun ;)
Welcome to the channel!!
Got shown this in school and now love this channel
OMG Thank you! Thank you so much guys!! it helps me in my homework!!! Thankkkkkkk youuuuuuuu!!!:)
Well done, Sci Guys
5/5
Best channel for practicals
This was so helpful for us, thank you, hope you do more videos soon :)
thank you for preparing my science quiz
Fantastic😊 for how long will the colours remain.. Please share how to prepare various transparent liquids with various colours to retain their unique colours in different glass bottles, for long periods
Why is my science teacher torturing me with this
I think this is pretty interesting, I’m only gonna do the vinegar, water and baking soda since I only have those
Great sir. This helped me a lot.
Im using this experiment for the science fair at my school
VERY GOOD EXPERIMENT 😀
I just found this channel and I am really hope that you will show us how to prepare soluble and insoluble salt and also explain about the qualitative analysis of Anions And Kations. Thanks :D
I like your funny words magic man
this rlly helped with my experiment, ty
great content bro keep it up
very helpful! thank u sci guys.
+Shaikha Gee You're very welcome
Thank yoi so much sir 😊😊😊😊😊I am fully enjoyed this experiment 🤞🤞🤞
Wow,Thank you so much guys!
You're welcome!
I'm a homeschool mom who forgot to buy cabbage for our experiment! Thank you for saving science class today!
Oh my gosh! I am in 7th grade and i needed to do this experiment but we didn't have cabbage so I am also using this for my experiment too!
Cool experiment
i did this its amazing
thank you for assisting me in my lab report hahaha
Teacher told us to do this at home ourselves but I'm cheap so THANK YOU
I'm definitely doing helping my brother do this for his project
+Karen Trinidad-Meza That is really nice of you :)
Add a dash of thermodynamics, and one might have a homemade snow-cone coloring recipe, if that fridge has a freezer. The blender is already accounted for...
Also, french press filtration, maybe? I'm thinking of grapefruit and orange juice derivatives as a pH spectrum.
Hi! Any idea as to how we could draw a graph showing the pH values of different solutions i.e. If we've got some solutions with known concentrations, and we add this indicator to obtain a set of colours. Thanks.
Why does the coloured pigment leave the cell when boiled?! It's just sooo cool this experiment! Want to know more about it, lol
Do you think there is any way you could add anthocyanin into a plastic and if so could that plastic change colour if dipped in say lemon juice or would the plastic compound prevent the colour change? Finally, using the plastic example is there any way you could reset the indicators reaction with the solution so that you could use it multiple times? Thanks, great video, very helpful.
this is so cool
The amount I wanted to hear Ryan from the next room go "Poyple!" at 1:13 is unheard of
hey guys, can you make a video on how to find research questions for lab reports? It is really important
Excellent
Wow I feel so much better about myself... I look at the comments thinking I’m the only one here watching this video for my science project but literally everyone here is doing science homework.
I'm doing this tomorrow in my AS biology practical empa... Thanks for the video!! X
kalyna McCool Thanks for letting us know :) How did it turn out?
The Sci Guys It was ok - thank you guys!! Got more of it yet to do tomorrow... :SJust checked out your video again...Going to look to see If you have any chemistry ones :D thanks !!X
kalyna McCool We do have a bunch of chemistry videos. You can also find our videos on our website www.thesciguys.ca and you can filter our videos by type of science.
i will use it in my science fair on thursday !! :D
+mahmoud morsy awesome!!
I thank my science teacher for sending this to my class.
tequila best waifu
@@ultrafreakysrilankan Lol yes
This teaches me so much thanks :DDDDDDDDDDD
TheCoolBacon You're most welcome :)
Wow, I didn't realise how acidic vinegar and lemon juice were! Thanks guys!
I'm just wondering if you've matured since making this comment..
@@TB-vz3oj honestly? no
Good evening. At 4:20 seconds into the video your slide shows (HO+). It should display (HO-).
Hi to everyone in my class watching this
its october and were still doing it
@@c0m3t19 Even in January 2021 people are still using this video for online work, seems to me teachers like to use any lessons already made even though they might have lost relevance over time which is very annoying since most of these don't get to the point immediately or effectively and now I'm wasting my time looking for facts about acids and alkalis even though I'll forget about the information in about an hour to a week!
Hi Sci Guys- how far in advance can I make the cabbage juice indicator? Does the strength of it degrade over time if I keep it in the fridge for a few days? Also- can I use hydrogen peroxide for this experiment? Thanks!
+Talia Steiger I think it should still work but because it's a food product without any preservatives make sure you put it in a sealed container before putting it in the fridge. You should be able to make it the night before or day before and it should still work. If you're concerned, test it out on a small batch prior to doing it with the kids it to see if you still get strong results from a day or two old solution.
can I use general indicator pH scale as a reference to indicate these solution pH in this experiment;
or we have to use pH scale for Red cabbage indicator?
I’m doing this for a project
i am another who is being forced to watch something for science and driven through more pain. gl on your lesson/hw
Thanks!!
very very very very nice
Hey just wondering but when you put the lemon juice in, it's still edible right? like nothing happens to make it dangerous?
HI Sci Guys, can you PLEASE make a video about the viscosity of liquids and measure their flow rates. Last time you did density now, this time you should do viscosity. PLEASE do that experiment ! Thank you
Hi Daiyan Mahfuz That is a GREAT idea!! We will add this experiment idea to our list of experiments. We have the next 2 or 3 experiments already prepared but we will add it to our current schedule of videos as soon as possible. We really appreciate you submitting this idea and THANK YOU!!
The Sci Guys very nice experiment but what i did not understand exactly the changing of color, i know when the indicator indicates a base the color will change right? but how this is happened the changing i mean and i would be very thankful if u letting me know more :)
Hey I really loved the video can any one please tell me how the strongest base turns into green colour but it must tur purple right acc. To scale
Awesome people
Thanks mate, u just saved me like $20
The Sci Guys, why did you use 4 cups of water for the experiment? Like what is the basis for measuring how much water we will use? Is it how many grams of red cabbage you used? I really need help and thanks for the video. :D
I wish these guys were my teachers
I am a 6th grader and this was simple but helpful.☺☻
here for science project~~
I did this many years back, with several household items that I thought would be acidic or basic. Most gave what I expected, the lemon juice was acidic, the water was neutral, and the baking soda was basic. And most of the other items I used also changed the indicator like I expected. But one thing confused me. I put liquid hand soap in one of the samples and I saw no change whatsoever. I expected it to turn blue but it didn't. Is it cause the PH, while basic(at least, I'm pretty sure it's basic), is too close to neutral for this indicator, that I'd need something like universal pH paper to detect subtle alkalinity like the soap?
How long does this cabbage solution hold? Can I keep it in a flask for how long?
I am confused. The pH of ammonia is about 11, which makes it a fairly weak base. Isn't it?
That should be in between weak and strong. a weak base would be an 8 or 7.5
you guys make science funny and interesting, i love you
Can you please tell me why the dark purple solution needs to be diluted with water to become light purple solution before it is used?
Good question 😊 it's to make the colour change easier to see (more light can pass through the solution and reach your eye)
What are possible alternate for the red cabbage? We cant find a red cabbage in our area. A rare vege. Thankyou
can we mix other chemicals fro like a science fair project?
Go SciGuys
At 4minute23; your text has OH+. I thought that should read OH-. At 5minute22, you have reversed the order of acid and base compared to the graphic shown earlier. Thank you for the video.
Could this be poured over white paper and left to evaporate in the sun and then cut into strips to be used like store bought ph test strips
are there any specific measurements or do I just eyeball it.
Could you add drops of a solution that was indicated acid into a solution that was indicated base until they became neutral?
+Abigail Hardy yes.
2. Prepare red cabbage extract. Use it as indicator to classify substances at home as acid and base.
( lemon juice, pineapple juice, bitter gourd extract, water gourd extract, turmeric, detergent etc.)
i want that bro will you plz tell me the steps to do it
Narayani Trading The steps to identify liquids at home, is exactly what we do in this video :)
is this reversible? Can you add base and then acid, and the juice will indicate the change?
+juahnful Yup, we show an example in the video of pouring one and then the other and the colour changes back and forth.
can we put in the liquid we test with in first then red cabbage liquid?
Why must the anthocyanins be refrigerated?
hi to everyone in my class for the friday lesson ;))
I am doing this experiment at school and we are using it to determine stomach ph. How would i do this?
Hannah Pate Well if you had a container of stomach acid, you would pour some of the pH indicator in until the colour change stops. Then compare that colour to the colour of another tested liquid that you know the pH of and it should be around that pH. Hopefully :)
Heyy did you do Task 3 the written paper? Can we compare our answers
Can I use tap water? Or does that affect the results
What PH colour scale is being used because the one on the internet shows that water should turn out green?
+Aditya Juneja I am not sure why water was green. If using red cabbage as the pH indicator then it should be close to neutral. That is unless something has contaminated it.
Bro does anyone know.what happens when you mix milk with red cabbage
Gud work
thank you alot(:
I will be conducting this test in Haiti where red cabbage does not grow naturally....
Are there any other vegetables or fruits that could possibly replace the red cabbage... like tropical/Caribbean fruits/vegetables?
Sarah Schulkins I just did a search and here are some ideas from a website I found. chemistry.about.com/od/acidsbase1/ss/Edible-Ph-Indicators-Color-Chart.htm
Ik we cant but what happends if we drink it?
Hi guys. Does anyone know how the pigment in the cabbage leaves the cabbage?
Fatima Omer I think what happens is when the cabbage is blended or boiled, the cell walls are broken apart and the pigment inside the cells escapes into the solution.
Will it work if I don't use distilled water?
any tips on what to revise for task 3?😂
One of my favourite experiments as it's pretty much fool-proof yet the results are fairly dramatic.
I have mixed feelings about how the experiment is carried out.
I can see lab coats, safety glasses, gloves etc. teach proper lab safety from the get-go, which is fantastic.
However not everyone has them, and likewise coffee filters and distilled water (while setting a useful base line) might not be available to everyone.
If it's about instilling a sense of wonder, this is one experiment that can be simplified considerably, making it more accessible to anyone.
I did this experiment, but I just boiled the water with the cabbage, and that way I didn't need distilled water...
pinche tarea ojt, Juanjo te amo❤❤❤❤
What are some sources of error in this experiment