Notice that the solid (steel) is the most dense, the gas (air) is the least dense, and the density of the liquid (water) is in between.

Density is defined as mass per unit volume of a substance. Solids have higher density whereas liquids have lower density. For ex-density of iron is greater than water. In increasing order of density of different states of matter = gas

solid state

The properties of matter include any traits that can be measured, such as an object’s density, color, mass, volume, length, malleability, melting point, hardness, odor, temperature, and more.

The bottom line is that a flame only becomes a plasma if it gets hot enough. Flames at lower temperatures do not contain enough ionization to become a plasma. On the other hand, a higher-temperature flame does indeed contain enough freed electrons and ions to act as a plasma. A candle flame is therefore not a plasma.

If you touch the plasma ball, all of the electrons will go through you to the ground. You see only one big spark inside the ball where you put your hand. If you touch it long enough, you get filled with electrons and can light up a light bulb!

That is the main reason that fire is not considered a plasma. Plasma will have a much larger fraction of its atoms and free electrons above the ionization threshold and have a much higher ionization.

The ITER plasma will be ten times hotter than the centre of the Sun. For a physicist, temperature is not only an indication of “cold” or “hot”; it also describes the energy of the particles that make up an object or a particular environment such as a plasma. …

The Sun is a main-sequence star, and, as such, generates its energy by nuclear fusion of hydrogen nuclei into helium. In its core, the Sun fuses 620 million metric tons of hydrogen and makes 616 million metric tons of helium each second.

Certainly radioactive decay occurs because the sun contains many radioactive isotopes including thorium, uranium etc. Basically fission happens irrespective of any environmental constraints because it is an intrinsic property of radioactive nuclides.

The Sun shines by turning hydrogen into helium in its core. This process is called nuclear fusion. Fusion happens when lighter elements are forced together to become heavier elements. When this happens, a tremendous amount of energy is created.

In the core of the Sun hydrogen is being converted into helium. This is called nuclear fusion. It takes four hydrogen atoms to fuse into each helium atom. During the process some of the mass is converted into energy.

It is not much possible to divide a helium atom of mass number 4 into two atoms. As fissioning it with beta particles gives one hydrogen atom. As fissioning it with protons gives three hydrogen atoms. As fissioning it with alpha particles gives four hydrogen atoms.

No. Stars like the Sun just aren’t massive enough to become black holes. Instead, in several billion years, the Sun will cast off its outer layers, and its core will form a white dwarf – a dense ball of carbon and oxygen that no longer produces nuclear energy, but that shines because it is very hot.

The inward pressure that keeps a star from exploding is the gravitational attraction of the gas mantle surrounding the core (which is most of the volume of the Sun, and is very hot but does not burn itself).

The Sun would need to be about 20 times more massive to end its life as a black hole. Stars that are born this size or larger can explode into a supernova at the end of their lifetimes before collapsing back into a black hole, an object with a gravitational pull so strong that nothing, not even light, can escape.

The answer is that the reactions take place in the core; the pressure from overlying layers (gravity) keep the core contained; the energy finds its way out quietly and slowly (over millions of years). The Sun is in balance – gravity vs. pressure gradient. No imbalance to produce an explosion.

The most massive stars end their lives in massive explosions, called supernova explosions (or super- novae). The Sun is not such a star; it has a modest mass and will not explode at any time in its life. When the fuel runs out at the center of the star, gravity makes it collapse.

As of yet, no one has ever witnessed this phenomena in action – but that may be about to change! According to study from a team of researchers from Calvin College in Grand Rapids, Michigan, a binary star system that will likely merge and explode in 2022.

Even humans are made of star stuff! If the sun suddenly exploded like this, the whole solar system would be destroyed. You don’t have to worry though – only stars ten times the size of our sun, or bigger, can explode like this. Our sun will end its life in a different way.

The Sun won’t explode. Eventually (in five or seven billion years time), the Sun’s life will come to an end. Our star will swell up, becoming something called a “Red Giant” star. It might even get so big that it swallows the Earth whole.