the gravitational force
Gas
A protostar forms when gravity pulls the dust and gases in a nebula together.
It varies from same as in a solid (glass, mercury), to that of a gas (and check out the "triple point") You should study - surface tension.
it is a gas but when it condenses it becomes a liquid
The interstellar medium is all the matter that exists between the stars in a galaxy. It mainly consists of gas (99%), with about 75% of this gas being in the form of molecular or atomic hydrogen, and about 25% in the form of helium. The other 1% is in the form of dust. The density of the interstellar medium is also very small: about 1 atom per cubic centimetre.There are two main types of interstellar mediums:Cold clouds of neutral atomic or molecular hydrogen, which are the raw materials wherein stars can be formed if it becomes gravitationally unstable and collapses.Hot ionized hydrogen near hot young stars.
An interstellar cloud made of gas, dust, and plasma in a galaxy.
These are generically referred to as, not surprisingly; 'interstellar clouds'
As an interstellar gas cloud shrinks in size, it's gravitational potential energy gradually transforms into other forms of energy.
A nebula IS a cloud of dust and gas loosely held together by gravity.
With all due respect, an interstellar cloud is, by its definition, gas, plasma and/or dust (molecular particulates) in greater quantities than normally found in interstellar space. So, perhaps the answer is No, because there are other elements present.
a nebula
The solar system was previously a cloud of interstellar gas.
Scientists believe that the solar system is about 4.5 billion years old, and that it began as a cloud of interstellar gas and dust. This cloud of matter then condensed and fragmented into tiny ( compared to planets ) objects called planetesimals. These planetesimals then came together due to gravity to from the planets we know now. It is thought that many asteroids are planetesimals that never came together.
No, The nebula is an interstellar cloud of dust, hydrogen gas, helium gas and plasma. Look on Wikipedia.
An interstellar cloud is a vast region in space that contains gas and dust particles. These clouds can vary in size and density, and serve as the birthplace for new stars. They are also important in the formation and evolution of planetary systems.
A diffuse mass of interstellar dust and gas is known as a nebula. Nebulae are often regions where new stars are forming, as the dust and gas are the raw materials from which stars are born. They can vary in size, shape, and composition.
That would be a nebula, which is an interstellar cloud of hydrogen gas, dust, and plasma. It is the first stage of a star's cycle.