The main hub for accessing each type of element category.

The current edition of the powder toy (41.3) contains nine categories of element types, they are:

1. === Walls ===
2. === Electronics ===
3. === Explosives ===
4. === Gasses ===
5. === Liquids ===
6. === Powders ===
7. === Solids ===
8. === Radioactive ===
9. === Special ===

Each category contains elements relevant to the title.

Walls:

1. Gas permeable
2. E-Hole
3. Conductor
4. Solid permeable
5. Non-permeable wall
6. Wall (non conductive)
7. Eraser
8. Absorbing wall
9. Liquid permeable
10. Fan
11. Sign
12. Streamline
13. Detector
14. E-wall
15. Wall (conductive)

Electronics:

1. Switch (SWCH)
2. Liquid Crystal (LCRY)
3. Battery (BTRY)
4. Electrode (ETRD)
5. Lightning! (THDR)
6. Positive semi-conductor (PTCT)
7. Negative semi-conductor (NTCT)
8. N-type silicon (NSCN)
9. P-type silicon (PSCN)
10. Photon (PHOT)
11. Electricity (SPARK)
12. Metal (METL)

Explosives:

1. Liquid Rubidium (LRBD)
2. Rubidium (RBDM)
3. C-4
4. Nitroglycerin (NITR)
5. Gun powder (GUN)
6. Fire

Gasses:

1. Smoke (SMKE)
2. Noble Gas (NBLE)
3. Plasma (PLSM)
4. Steam (WTVR)
5. Gas

Liquids:

1. Liquid Nitrogen (LN2)
2. Liquid Wax (MWAX)
3. Salt water (SLTW)
4. Distilled water (DSTW)
5. Acid
6. Lava
7. Oil
8. Water (WATR)

Powders:

1. Broken glass (BGLA)
2. Sand
3. Broken Metal (BRMT)
4. Salt
5. Concrete
6. Snow
7. Stone
8. Dust

Solids:

1. Nitrogen Ice (NICE)
2. Glass (GLAS)
3. Breakable Metal (BMTL)
4. Plant (PLNT)
5. Wood
6. Ice
7. Goo

Radioactive:

1. Uranium (URAN)
2. Plutonium (PLUT)
3. Neutrons (NEUT)

Special:

1. Stickman (STKM)
2. White hole (WHOL)
3. Black hole (BHOL)
4. Insulatior (INSL)
5. Diamond (DMND)
6. Void
7. Clone (CLNE)
8. Particle Eraser
9. Vacuum (VAC)
10. Cool
11. Heat
12. Air