Most elements in this category all burn or react when exposed to FIRE (except FIRE itself, C5 and CFLM), and each element has different properties that cause it to react differently. Pressure, heat, electricity, contact with other particles, fire, plasma and even water can be triggers to certain elements in this category.

Fire

Description: Ignites flammable materials. Heats air.

Type: Gas (considered a powder for some walls)

Ignites flammable substances and heats up most elements. When FIRE is hot enough, it turns to Element:PLSM.

Gunpowder

Description: Gunpowder. Light dust, explodes on contact with fire or spark.

Type: Powder

Explosive powder.Can be ignited by electricity and fire and 400.00C temp.

Nitroglycerin

Description: Nitroglycerin. Pressure sensitive explosive. Mix with CLST to make TNT.

Type: Liquid

Explodes under high pressure, SPRK and FIRE. Turns to GAS and a very small amount of DESL when exposed to NEUT. When mixed with CLST, you can make TNT (similar process to real life).

C-4

Description: Solid pressure sensitive explosive.

Type: Solid

Will explode when exposed to high pressure, SPRK, heat, or FIRE. Transforms into GOO when exposed to NEUT.

Rubidium

Description: Rubidium. Explosive, especially on contact with water. Low melting point.

Type: Solid

Explodes on contact with WATR, ACID and FIRE. Will not explode with SPRK, unlike other explosives. It will instead conduct just like normal metal. Melts into liquid rubidium at ~37.8c.

Liquid Rubidium

Description: Liquid Rubidium.

Type: Liquid

The same as RBDM, except it's a liquid.

Lightning

Description: Lightning! Very hot, inflicts damage upon most materials, transfers current to metals.

Type: ???

Very hot liquid-like substance, passes a SPRK to any conductive materials. One of the most destructive elements, will create a strong pressure shock wave (256 pressure) as well as conducting its temperature when in contact with non-metals (or metals that are unable to conduct electricity because a spark has just passed by). THDR's movements are not affected by pressure.

Thermite

Description: Thermite. Burns at extremely high temperature.

Type: Powder

THRM will react with fire, plasma, lava and life. It generates very large amounts of heat (Around 3000 C just after ignition). Molten THRM produces BMTL when cooled

Sub-zero flame

Description: Sub-zero flame.

Type: Gas

'Fire' that burns at -273.15 degrees. Will ignite C-5 and ANAR, but not other elements.

Fireworks

Description: Fireworks! Colorful, set off by fire

Type: Powder

After contacting FIRE, FIRW will shoot off upward and explode with hot (6000°-9000°) and colorful embers. Use decorations to change ember colors.

Explodes when TMP > 1, and LIFE = 0.

Lightning

Description: Lightning. Change the brush size to set the size of the lightning.

Type: ??? (Energy?)

Bolt or "Arc" Lightning, Very short-lived element ~2 to 5 frames. Upon clicking a "bolt" of LIGH will extend from the brush in a downward angle (Angle is random, but always downward), then dissipate, leaving a "thunderclap" pressure wave in its wake. Generates a HUGE amount of heat and pressure upon making contact with another element, will not penetrate other element, striking the surface only. will spark conductors that survive the impact. Can be produced be sparking TESC. Length, temp, and pressure of bolt based on brush size.

Destructive Bomb

Description: More destructive Bomb, can break through virtually anything.

Type: Powder

Much more destructive than BOMB. When within 2 pixels of another element (except for DMND, any type of clone, or any type of Wall), DEST releases high amounts of heat and pressure, melting and then scattering most elements. DEST survives for many frames after the initial impact and often tends to dig into whatever is in the way.

Original Fireworks

Description: Original version of fireworks, activated by heat/neutrons.

Type: Powder

Explodes with neutrons or heat (200°). Jumps higher than FIRW but has odd trajectories and pale embers. Explodes when hot (7000°-10000°).

Bomb

Description: Bomb. Explodes and destroys all surrounding particles when it touches something.

Type: Powder

Explodes when it touches any other particles except for DMND, any type of clone, or any type of Wall. When BOMB explodes, all particles within an 8 pixel radius are replaced by EMBR (except for diamond, clone, etc) at 9725.85 degrees. Bomb shrapnel is ejected at the explosion temperature after explosion occurs, causing damage. However, the shrapnel's conductivity rapidly decreases with its life and will cease to exist after a while.

C-5

Description: Cold explosive, set off by anything cold.

Type: Solid

Explodes when cold, produces CFLM and pressure. Only reacts with LO2, LN2, CFLM, TRON and any other liquid cooled to below 99K (-174C). Not pressure sensitive.

Trinitrotoluene

Description: TNT, explodes all at once

Type: solid

A solid explosive similar to C-4, but creates more pressure and less fire. It is quite a hot explosive, hot enough to melt METL. TNT will explode into bomb shrapnel upon detonation. TNT is the only explosive that explodes instantaneously upon ignition. It was added in version 69.0 beta.

Ignition cord

Description: Ignition cord. Burns slowly with fire and sparks.

Type: Solid

A slow burning fuse-like material. IGNC, unlike FUSE, can be ignited by fire as well as hot materials. It burns with EMBR and FIRE at low temperatures. Ignition cord can be used as a delay to set off low grade explosives, and it also burns in water. Neutrons can pass through Ignition cord without distortion. Added in v70.0.

Gravity Bomb

Description: Gravity bomb. Sticks to the first element it touches and produces a strong gravity push.

Type: Powder

Sticks to the first particle it touches and creates a burst of positive gravity, then a strong burst of negative gravity. Newtonian Gravity must be enabled for it to work.