HNO3

Make Nitric Acid – The Complete Guide
NurdRage
Jun 3, 2009

a nitrate salt:

  • sodium nitrate
  • potassium nitrate
  • ammonium nitrate
  • a nitrate based fertilizer, as long as it passes the nitrate test

Cu + 4HNO3 → CuNO32 + 2NO2 + 2H2O | Copper react with nitric acid
Chemiday com
Nov 4, 2017

Nitric Acid From Thin Air
Cody’sLab
Aug 9, 2015
I make nitric acid out of air, water, and electricity.
[the same process that creates NO2 naturally: lightning]

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Egg in a bottle

How to get an egg inside a bottle | Live Experiments (Ep 28) | Head Squeeze
BBC Earth Lab
May 18, 2013

How to do egg in a bottle science experiment
Kidspot
Apr 4, 2015

Chemistry-Magic Show 2013
MrsPetersonChemistry
Aug 26, 2013

Phenolphthalein

Using Phenolphthalein As An Acid – Base Indicator
ScienceCompany
Apr 17, 2012
Phenolphthalein indicator is pink or fuchsia in alkaline solutions starting at about pH 8.2.
Phenolphthalein loses color again above pH 12.

Making Phenolphthalein
NileRed
Feb 3, 2015
phenolphthalein is synthesized by the condensation of phenol and phthalic anhydride
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Make phenolphthalein- A Acid Base Indicator
MRK Chemistry
Jul 31, 2016

Phenol is very poisonous, take extreme caution when working with it.
Wear a gas mask at all times.

Anthocyanin: a pH indicator

Make your OWN pH Indicator from Red Cabbage!
Thoisoi2 – Chemical Experiments!
Sep 29, 2014

red cabbage: 28.7 mg/100g anthocyanin
elderberries: 1317 mg/100g
blueberries: 48 mg/100g,

Natural indicators
FlinnScientific
Dec 18, 2012
Rose petals, herbal (hibiscus) teas, grape juice, apple skins—students will love testing their favorite flowers or fruits.