As I was reading the mnemonic for this vocabulary word I was thinking all the time about ‘bake’. I know the pronunciation is something like /beik/, but read it as if you were reading hiragana; ばけ.
Now, we know 化ける means ‘to transform’. What happens when you bake (ばけ) something? Just that. It transforms.
Imagine you are baking dough into a pizza. Holy shit. The dough transformed into the best pizza you ever tried. Time to eat the the pizza in order to transform it into energy to study more kanji!
This might have helped you, or maybe not. In any case, just procrastinating here, don’t take me too seriously.