The metal wire in an incandescent lightbulb glows when the light is switch on and stops flowing when it is switched off. This simple process is which kind of a change?

In a closed or isolated system , matter can not be created or destroyed. it can change forms but is conserved true or false

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

Part of molten rock at mid-ocean ridges