We would classify this as chemical property of matter.
Chemical properties are the properties that can only be observed when a matter undergoes a change to become a different type of matter. Chemical change may alter the composition of original matter.
Following are the types of chemical properties;
1.Reactivity
2.Toxicity
3.Flammability
Reactivity is the aptness of matter to combine with other substances.
Toxicity is the extent to which a combination of chemicals may harm an organism.
Flammability is the aptness of matter to burn.
Chemical properties can only be detected when a material is in the process of being changed into another substance.
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