Metals aren't thermite, even more so you need tremendously high temperatures, and it needs to be sustained. Finally, liquid surfaces only burn if there is enoug

Metals aren't thermite, even more so you need tremendously high temperatures, and it needs to be sustained. Finally, liquid surfaces only burn if there is enough air firstly and enough temperature to sustain the flame. Dumping a match into a vat of kerosene will put out the match.