What would happen if you put a drop of blood into fire?

Putting a drop of blood into fire can have several effects depending on the temperature and other characteristics of the fire:

1. Evaporation: If the fire is relatively cool, the drop of blood will quickly evaporate due to the heat. As water makes up the majority of blood's volume, most of the water content in the blood droplet will turn into water vapor. Some of the non-volatile components in the blood may vaporize as well.

2. Combustion: If the fire is hot enough, the blood droplet may undergo combustion, meaning it will react with oxygen in the air and release energy in the form of heat and light. Burning blood produces acrid smoke and pungent odors due to the breakdown of various organic compounds present in blood, including proteins, lipids, and carbohydrates.

3. Spattering: As the blood droplet is heated, water vapors rapidly expand, causing increased pressure inside the droplet. When this internal pressure becomes too high, the droplet may burst, dispersing blood particles as tiny droplets in the immediate vicinity.

4. Charring: If the intense heat is sustained, and oxygen levels are present, the charred components resulting from burning blood may become blackened soot deposits, leaving blackened residue in the fire.

Note that the behavior and rate of evaporation, combustion, and charring of the blood droplet can be influenced by factors such as the flame's temperature, oxygen availability, airflow, and surface characteristics of the fire.