Sulfur before being heated in the mixture weighs less and is less reactive than in the heated mixture.
Simply heating (warming) sulfur could be a physical change if nothing happens to the sulfur other than it just getting warmer, and when you remove the heat, it stays as the original sulfur. However, more likely than not, heating sulfur will cause a CHEMICAL change where the sulfur combusts and turns into sulfur dioxide (SO2).
No, this is a chemical change.
solid, yellow powder
No, dissolving solutes in a solvent is always a physical change!
Sulfur and iron filings together are a mixture.
At room temperature pure sulfur is yellow and hasn't odor.
Yes you can. You might do it with a magnet.
Sulfur alone is a bright yellow solid with a faint odor, while in the unheated iron sulfur combination, it appears as a mixture of yellow sulfur and grayish iron. When heated, the iron sulfur combination undergoes a chemical reaction to form iron sulfide, resulting in a color change to a darker gray-black solid compared to the original components.
Sulfur before being heated in the mixture weighs less and is less reactive than in the heated mixture.
Sulfur is a fine powder that is light yellow in color; iron filings are metallic. A mixture would be just that: a light yellow powder intersperced with metallic particles.
Sulfur before being heated in the mixture weighs less and is less reactive than in the heated mixture.
The three states of sulfur are solid (as a yellow crystal), liquid (molten sulfur), and gas (sulfur vapor).
Physical change occurs when sulfur and sodium chloride are separated. This is because their chemical compositions remain the same, but their physical states are altered when they are no longer combined.
Burning of sulfur (or anything else) is a chemical change, not a physical change.
Grinding sulfur is a physical change because the substance is still sulfur; only the form has changed from solid pieces to smaller particles. No new substances are formed during grinding.
Simply heating (warming) sulfur could be a physical change if nothing happens to the sulfur other than it just getting warmer, and when you remove the heat, it stays as the original sulfur. However, more likely than not, heating sulfur will cause a CHEMICAL change where the sulfur combusts and turns into sulfur dioxide (SO2).