Iron(II) carbonate [green] to Iron(II) oxide.
The water has evaporated and left behind the solid residue of the sweet material, resulting in the green solid. This process is called evaporation and leaves the solid substance behind as the water in the liquid evaporates.
Sulfur is a yellow solid that, when heated in the absence of air, sublimes into a black solid as it undergoes a phase change from solid to gas.
Iodine is a purple-black non metal that changes to a deep purple gas when heated.
The solid residue that remains when a hydrate is heated is the anhydrous compound, which is the compound without any water molecules. Heating a hydrate removes the water molecules through the process of dehydration, leaving behind the anhydrous form of the compound.
The black solid left by sugar when it is burned or heated to high temperatures is primarily carbon, along with some other compounds resulting from the decomposition of sugar. This process, known as caramelization, can lead to the formation of charred remnants that are very dark due to the breakdown of the sugar's molecular structure. This black residue is often referred to as carbonized sugar or charred sugar.
The water has evaporated and left behind the solid residue of the sweet material, resulting in the green solid. This process is called evaporation and leaves the solid substance behind as the water in the liquid evaporates.
A solid insoluble residue remain after the evaporation of water.
Sulfur is a yellow solid that, when heated in the absence of air, sublimes into a black solid as it undergoes a phase change from solid to gas.
What is left after heating sucrose is charcoal or solid carbon (C2). Heating causes sucrose to decompose as referred to this chemical reaction: C12H22O11 + O2 (the air is filled with it) - Heated --> CO2 + H2O + C2
The gas and the solid are two different compounds, they won't be the same therefore they'd be a mixture.
Either sodium carbonate or copper carbonate
When heated, zinc oxide (white powder) decomposes into zinc vapor (colorless gas) and solid zinc suboxide (black solid).
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.
Iodine is a black solid that sublimes directly to a purple vapor without passing through a liquid phase when heated gently.
After the total evaporation of water a small solid residue can remain in the beaker.
Iodine is a purple-black non metal that changes to a deep purple gas when heated.
The solid residue that remains when a hydrate is heated is the anhydrous compound, which is the compound without any water molecules. Heating a hydrate removes the water molecules through the process of dehydration, leaving behind the anhydrous form of the compound.