Happy St. Patrick's Day!
WHICH OF THE FOLLOWING ARE GREEN?
- 540 nm or 600 nm
- bromothymol blue in a basic solution or a neutral solution
- copper(II) chloride dihydrate or copper(II) oxide
- chlorophyll or carotene
- BaCl2 salt or CaCl2 salt in fireworks
- flame test for boron or sodium
- hematite or malachite
- Al2O3, with Cr3+ replacing a few Al3+ in octahedral sites or Be3Al2(SiO3)6, Cr3+ replacing a few Al3+ in octahedral sites
Source: Taken from the March 2007 issue of Chem 13 News