Element #37 (LN2): Name: Liquid Nitrogen Very cold, disappears whenever it touches anything warmer. Also ignites C-5. Element #51 (NICE): Name: Nitrogen Ice Nitrogen Ice. Very cold, will melt into LN2 when heated only slightly. Element #147 (EMBR): Name: Ember/Spark An element used for graphical effects such as BOMB explosions and fireworks (FWRK and FIRW). Most elements cause any EMBR that touches them to disappear.