Well, you could heat it to about 30,000 K. It would be a gas at that temperature, but it would definitely be glowing blue.
Other than that, copper doesn't turn blue simply from heating. You might be able to get a blue patina on copper by heating it and forming a very thin layer of oxides on the surface, but controlling the color is tricky, because the exact color is very dependent on the thickness of the oxide layer (this same effect is what's responsible for the "rainbow" colors of oil on water).
No, copper will not turn red litmus paper to blue. Red litmus paper changes to blue in the presence of a basic (alkaline) substance, while copper is a metal and does not exhibit basic properties. Therefore, it does not affect the color of litmus paper.
To change blue copper sulfate to white copper sulfate, you can heat the blue copper sulfate to drive off the water molecules and get anhydrous white copper sulfate. This process is known as dehydration. Be cautious when heating copper sulfate as it can release toxic fumes.
Not necessarily. They might be blue, green, or essentially white depending on how many waters of hydration are associated with the copper (II) ion. It's very easy to see this if you just take some copper (II) sulfate pentahydrate (blue vitriol) in a test tube and heat it; as the waters of hydration are driven off, the crystals turn white (some people call it a very light green; it looks white to me). When the crystals are allowed to cool they will absorb water from the air and eventually turn blue again. Aqueous solutions of copper (II) compounds are blue, as far as I know; at least I can't think of any counterexamples.
Sugar donates electrons that reduce blue copper (II) sulfate to orange copper (I) oxide.
Copper is very reactive to the air and skin and will likely turn colors due to oxidization. With the purple and blue colors showing, especially so quickly, it is likely the bracelet was heat treated specifically for this purpose.
When you heat copper sulfate, it undergoes a physical change where it loses its water of hydration, turning from blue crystals to a white powder (anhydrous copper sulfate). This change is reversible, as adding water to the white powder will turn it back to blue crystals.
When heated, copper sulfate crystals lose their water molecules and turn into anhydrous copper sulfate, releasing steam in the process. The color of the crystals changes from blue to white as they lose the water.
To turn copper blue using a chemical process, you can apply a solution of ammonia and water to the copper surface. This will create a blue-green patina on the copper over time.
When copper reacts with water, it forms copper hydroxide which has a blue color. This is why when copper objects such as pipes or fittings corrode, the water turns blue due to the presence of copper hydroxide in the water.
When heat is added to anhydrous copper sulfate, it will undergo an endothermic reaction and absorb the heat energy to form hydrated copper sulfate. The anhydrous form of copper sulfate will turn blue as it absorbs water molecules from the surrounding environment, forming hydrated copper sulfate.
Blue, because the copper cations become hydrated and the hydrated ions have a blue color.
A darker shade of blue.
because copper dissolves in salt.
When water is added to copper sulfate powder, it dissolves to form a solution. This dissolution is an exothermic process, meaning it releases heat, causing the solution to become warm. The blue color of the solution is due to the copper ions in the copper sulfate forming a blue complex with water molecules.
You have this backwards. Copper sulfate, CuSO4.5H2O is blue. When it is gently heated, it loses water and turns white.CuSO4.5H2O --> CuSO4 + 5 H2O.The white substance is anhydrous copper sulfate. If you put water on it it turns blue again.
Any water soluble blue salt (and which does not react with water) can turn the solution blue. For example = Copper(II) sulfate[CuSO4], Oxovanadium(IV) sulfate[VOSO4], Copper(II) nitrate[Cu(NO3)2], etc.
No, copper will not turn red litmus paper to blue. Red litmus paper changes to blue in the presence of a basic (alkaline) substance, while copper is a metal and does not exhibit basic properties. Therefore, it does not affect the color of litmus paper.