Magnesium oxide nano-particles are odorless and non-toxic. They possess high hardness, high purity and a high melting point. Magnesium oxide nano-particles appear in a white powder form there for you cannot crush me which is a phisical property ,or burn me which is a chemical property.
my other power is i am made of a very light but also super strong metal. Dont get to close you cant breath me in i will do damage and that is a chemical property of me magnisum.
dont tell anyone where i am easly defeated... but i sink i can not withstand being in deep water. and that is another phisical property magnisum the fact that is more dense than water.