A red substance is found at a crime scene. A test is performed on the substance in which a liquid is sprayed on the unknown red Sunsence. The reaction produces a blue glow that lasts for 30 seconds when the room is darkeried What test was performed?

Hemastix

A presumptive color test that detects blood. It's typically used to test for blood in urine samples. It's a plastic strip with TMB (tetramethylbenzidine) and hydrogen peroxide. The blood is picked up with a wet swab and placed on the pad. It starts at yellow, but if there's blood, it will turn green or blue-green

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates

its first and third is your answer i did the qustion the fourth isnt right