[{"from": "human", "value": "Provide a brief overview of this molecule. [Ni]"}, {"from": "gpt", "value": "The molecule is extremely fine powdered nickel. It is grayish colored. Insoluble in water. Nickel catalyst is used to promote the chemical action in manufacturing synthetics and to process vegetable oil and petroleum. If exposed to air or moisture, it may become hot enough to ignite. It is insoluble in water and does not react with larger volumes of water."}]