Materials included:
- 1.0 mM hydrogen tetrachloroaurate
- 1% trisodium citrate
- gold nanoparticles, 70nm and 30nm
Materials required but not included (check out separately):
- 50 mL Erlenmeyer flask or beaker
- Stirring hotplate with 1" or 1 cm stir bar
- Laser pointer, polarizing filter
- Droppers
- Test tubes
- NaCl Solution
- light colored or colorless sports drink
Find the full experiment here and demo video here.