Science Experiment help!!!!!!!

I need to conduct an experimemt to test the electrical conductivity on silicon dioxide in its solid state
im not sure how to connect it to the electrical circuit since its a powder

it needs to be in its SOLID STATE meaning i cant dissolve it

Your SiO2 IS in the solid state. It doesn't have to be one large chunk to be in the solid state. And you need not worry about dissolving it. It won't dissolve in water or most acids, for that matter. Simply put the two wires from your conductivity tester in the SiO2 powder. That will be enough to establish that it is a nonconductor. For comparison, you could put the two wires from the conductivity tester into graphite powder and you will see evidence of conductivity since graphite is a reasonably good conductor.

SiO2 does not dissolve in water.
Maybe you can melt it down with an alcohol blast burner, and then let it cool down to a solid state.
Not sure.