human
What are some chemical properties of matter that can be hazardous or unstable?
gpt
Radioactive, flammable, and combustible materials can be hazardous, and may react with oxygen to their harm.
Explanation: Chemical properties that make a matter hazardous or unstable include its ability to react with oxygen, causing it to catch fire or explode, and its potential for radioactivity and toxicity. Certain elements and compounds exhibit these properties, posing risks to human health and the environment if not handled properly.