Complete the paragraph to describe the characteristics of the sun and rigel, a blue-white supergiant.
rigel and the sun have similar characteristics, but they also differ in some ways. rigel and the sun are spheres of gas that use nuclear fusion to produce energy. rigel is ? the sun. rigel has ? the sun. rigel has a surface temperature of about?

Rigel is 74 times larger than the Sun.

Rigel has radiation 66,000 times more powerful than the Sun’s radiation output due to its output of other radiations besides visible light, the Sun.

Rigel has a surface temperature of about over 20,000 degrees, twice that of the sun and 3 1/2 times hotter than Betelgeuse.

Rigel: Astronomers classify it as a blue supergiant at a distance of 860 light years. Rigel is a massive blue supergiant calculated to be anywhere from 61,500 to 363,000 times as luminous (brighter) as the sun.  Rigel's radius is over 70 times that of the sun.  

h

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.