is there another form of matter other than solid, liquid and gas?

Answer 1

Yes.
Plasma.
Plasma is an electrically neutral, highly ionized gas composed of ions, electrons, and neutral particles. It is a phase of matter distinct from solids, liquids, and normal gases.

Answer 2

Yes, 3 other states of matter have been observed, bringing the total to 6!

Plasma, which others have addressed well already, is made up of a gas-like soup of ions and free electrons, but has some liquid properties as well. The closest-to-home example of a plasma is the contents of a flourescent light bulb when it is on. These require very high energy.

Keep adding energy, and you can actually get the electrons and protons to fuse together, producing neutrons. You're left with...neutrons! A neutron star, to be precise. If you have one in your house, get rid of it before someone gets hurt. If you can move it, that is. A piece of neutron star the size of a sewing needle would weigh as much as the Sears Tower.

At the opposite temperatre extreme, very near absolute zero, is something called the Bose-Einstein condensate (yes, that Einstein. He and Bose predicted its existence). This is where all the atoms of a material start acting like one giant atom, sort of. So I've never seen one, but I somehow doubt that you will, either.

Answer 3

antimatter (made of positron, antineutron, antiprotons and antineutrinos)

plasma (is what stars are made out of)

darkmatter (makes up 90% of of the universe)

here is more information on antimatter:
In particle physics, antimatter is matter that is composed of the antiparticles of those that constitute normal matter. If a particle and its antiparticle come into contact with each other, the two annihilate; that is, they may both be converted into other particles with equal energy in accordance with Einstein's equation E = mc2. This gives rise to high-energy photons (gamma rays) or other particle–antiparticle pairs. The resulting particles are endowed with an amount of kinetic energy equal to the difference between the rest mass of the products of the annihilation and the rest mass of the original particle-antiparticle pair, which is often quite large.

Antimatter is not found naturally on Earth, except very briefly and in vanishingly small quantities (as the result of radioactive decay or cosmic rays). This is because antimatter which came to exist on Earth outside the confines of a suitable physics laboratory would almost instantly meet the ordinary matter that Earth is made of, and be annihilated. Antiparticles and some stable antimatter (such as antihydrogen) can be made in minuscule amounts, but not in enough quantity to do more than test a few of its theoretical properties.

There is considerable speculation both in science and science fiction as to why the observable universe is apparently almost entirely matter, whether other places are almost entirely antimatter instead, and what might be possible if antimatter could be harnessed, but at this time the apparent asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics. Possible processes by which it came about are explored in more detail under baryogenesis.

Answer 4

Actually, there is one other "state" of matter - that is super critial fluids. Super Critical Fluids are found if you raise the temperature and pressure of a substance until you get a state of matter that acts both as a liquid and a gas. Super critical carbon dioxide is used to extract caffine from coffee beans and is used by analytical chemists as a solvent for extractions and separations.

Answer 5

Yes, a gel is a combination of a solid and a liquid but is neither a pure solid nor a pure liquid.

Answer 6

yeah plasma- it is a 'fluid like' in appearance, but moves and behaves much more like a gas with it's interaction. Needs tons of energy- closest natural place is the sun, but also can be created on earth with electromagnets holding and manipulating the matter.

Answer 7

I suppose supercooled liquids qualify, only difference from a normal liquid is that they crystailize as soon as some sort of instability(not sure if thats the right word) is introduced.

Answer 8

Anti-Matter

Answer 9

Yes. It is called half-melted. It's not quite solid. Not quite liquid and
definitely not gaseous.

Answer 10

A Soquid. A Wendy's frosty.