The current version of The Powder Toy contains 13 categories of elements.
Walls
Conductive Wall
E-Wall
Detector
Streamline
Fan
Liquid Wall
Absorb Wall
Wall
Air Wall
Powder Wall
Conductor
E-Hole
Gas Wall
Gravity Wall
Energy Wall
AirBlock Wall
Electronics
Duplicator Ray
Tungsten
Particle Ray Emitter
WireWorld Wires
Mercury
Electromagnetic Pulse
Ray Emitter
Wireless Transmitter
Instant Wire
Tesla Coil
Insulated Wire
Switch
Battery
Electrode
Positive Temperature Coefficient Thermistor
Negative Temperature Coefficient Thermistor
Insulator
N-Type Silicon
P-Type Silicon
Spark
Metal
Sensors
Invisible
Detector
Temperature Sensor
Pressure Sensor
Force
Pipe
Accelerator
Decelerator
Force Emitter
Repel*
Damage*
Piston
Frame
Explosives
Fire
Gunpowder
Nitroglycerine
C-4
Rubidium
Liquid Rubidium
Lightning
Thermite
Sub-Zero Flame
Fireworks
Lightning
More Destructive Bomb
Original Fireworks
Bomb
Cold Explosive
Trinitrotoluene (TNT)
Ignition Cord
Gravity Bomb
Gasses
Gas
Steam
Plasma
Noble Gas
Smoke
Oxygen
Carbon Dioxide
Caustic Gas
Fog
Variable Pressure Gas
Hydrogen
Liquids
Water
Oil
Lava
Acid
Distilled Water
Saltwater
Melted Wax
Liquid Nitrogen
Diesel
Liquid Oxygen
Glow
Carbonated Water
Bizarre
Paste
Gel
Soap
Virus
Powders
Dust
Stone
Snow
Concrete
Salt
Broken Metal
Sand
Bagels
Yeast
Fuse Powder
Broken Coal
Freeze Powder
Very Light Dust
Anti-Air
Powdered Quartz
Broken Electronics
Clay Dust
Solids
Goo
Ice
Wood
Plant
Breakable Metal
Wax
Glass
Nitrogen Ice
Coal
Brick
Fuse
Iron
Dry Ice
Sponge
Rime
Vine
Shield
Filter
Quartz
Titanium
Gold
- Uranium (URAN)
- Plutonium (PLUT)
- Neutrons (NEUT)
- Fighter (FIGH)
- White hole (WHOL)
- Black hole (BHOL)
- Tron (TRON)
- Stickman 2 (STK2)
- Portal Out (PRTO)
PRTI
BCLN
CONV
STKM
VENT
VACU
DMND
VOID
CLNE