You need to take one metal
And a different metal oxide
Mix the two powders together.
And heat them in a roaring flame
They need to be powders so they have a large surface area.
And they need to be mixed so every particle of metal oxide is touching a metal particle.
Then look for signs of a reaction like smoke, glowing or a change in appearance.
Then repeat with a different metal and metal oxide
But make sure you note down all of your results carefully.
