Final answer:
The process that treats hazardous liquid chemically to turn it into a solid is known as solidification. This way, it becomes easier to handle and reduce the risk of contamination spreading.
Step-by-step explanation:
The chemical decontamination process that involves treating a hazardous liquid chemically so that it turns into a solid is known as solidification. This process is used to manage and dispose of hazardous waste in a safer manner by converting it to a less hazardous solid form. Solidification can often involve adding materials such as concrete or polymers to the liquid waste to stabilize it. This way, it becomes easier to handle and reduce the risk of contamination spreading.