Start with a mild base to have it be blue, just a little NaOH, then you have a moderate acid, like vinegar, to make it red. Then, when nobody is looking, drop a grain of NaOH into the first empty vessel. When you pour it back it changes back to the original blue.
that bouncing ball demo was cool
I have that same version of Jimmy Stewart's Calculus book.
Can you explain in more detail how to use the food dye? How does it go back to blue from red?
Start with a mild base to have it be blue, just a little NaOH, then you have a moderate acid, like vinegar, to make it red. Then, when nobody is looking, drop a grain of NaOH into the first empty vessel. When you pour it back it changes back to the original blue.
I guess it's quite off topic but does anybody know a good place to watch newly released movies online ?
@Dominic Finley I use FlixZone. You can find it by googling =)
@Royce Lennox yup, I've been using FlixZone for since march myself :D
@Royce Lennox thank you, I went there and it seems like they got a lot of movies there :D I really appreciate it !
Thank you so much 👏👏👏🔥
You're welcome 😊