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When green powder is heated it turns black and a gas is produced is this a reversible or irreversible change?
when green powder is heated, it turns black and a gas is produced. in irreversible changes, new materials are always formed. given that a gas is produced, which is a new material, heating green powder is an irreversible change.
What happen when iron filling is heated with sulfur powder?
Heating iron filings with sulfur powder will result in a chemical reaction known as a thermite reaction. This reaction produces iron sulfide and a significant amount of heat and light. The iron sulfide formed is a black compound.
What metal forms a black oxide when heated?
copperCopper (cupric) oxide is produced. Therefore, copper is the metal that produces a black oxide when heated.
What happens when copper powder is heated?
When copper powder is heated, it undergoes a series of color changes as it oxidizes. Initially, it turns black as copper oxide forms on the surface, then it changes to a red-brown color as cupric oxide forms. Finally, at higher temperatures, it transforms into a black solid known as cupric oxide.
What is the best oxidizer for black powder?
Potassium nitrate is the oxidizer used in black powder. Although other oxidizers are stronger(potassium perchlorate for example), it must not be replaced by them. If the term used is black powder, potassium nitrate is the only oxidizer that ought to be used.
A white powder when heated produces a colourless gas and a black solid is the white powder a element?
It's a compound. If it was all one element it would all change the same way into the same thing. Since it's a compound, the molecules break up and the groups of atoms react differently to the heating (one becomes a gas, the other remains solid).
Why the colour of heated copper powder becomes black when air is passed over it?
When air is passed over heated copper powder, the copper undergoes oxidation, forming copper oxide. Copper oxide is black in color, which is why the heated copper powder appears black when air is passed over it.
What is a blue solid that produces a black solid when heated?
Either sodium carbonate or copper carbonate
When green powder is heated it turns black and a gas is produced is this a reversible or irreversible change?
when green powder is heated, it turns black and a gas is produced. in irreversible changes, new materials are always formed. given that a gas is produced, which is a new material, heating green powder is an irreversible change.
When a metal powder is heated in open dish it turns black which metal is that?
The metal powder that turns black when heated in an open dish is likely to be magnesium. This is due to the formation of magnesium oxide on the surface of the metal powder when it reacts with oxygen in the air during heating.
When a green powder is heated it turns black and a gas is produced is this a reversible or irreversible change?
when green powder is heated, it turns black and a gas is produced. in irreversible changes, new materials are always formed. given that a gas is produced, which is a new material, heating green powder is an irreversible change.
What happen when iron filling is heated with sulfur powder?
Heating iron filings with sulfur powder will result in a chemical reaction known as a thermite reaction. This reaction produces iron sulfide and a significant amount of heat and light. The iron sulfide formed is a black compound.
If a light green powder is heated in a test tube A gas is given off while the solid becomes black In which classification of matter does the green powder belong?
The green powder belongs to the category of chemical substances. This is because it undergoes a chemical change when heated, giving off a gas and forming a black solid, indicating a chemical reaction has occurred.
What is observed when air is passed over heated copper powder?
When air is passed over heated copper powder, the copper powder will react with the oxygen in the air, leading to the formation of copper oxide. This reaction can result in a color change in the copper powder from its original metallic color to a reddish-brown color.
Why diamond is colourless where as the content is carbon is black?
Some formations of carbon atom collections are black: the formation of carbon atoms for diamond is colourless.
What metal forms a black oxide when heated?
copperCopper (cupric) oxide is produced. Therefore, copper is the metal that produces a black oxide when heated.
What is the nature of a solid when it is heated it melts at a definite temperature and further heating produces black solid and a gas?
carbon
