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When a metal changes color because it has reacted with another substance and what change occured?
The change in color of a metal when it reacts with another substance is due to the formation of a new compound on the metal's surface. This compound may have different optical properties that manifest as a distinct color change. The reaction could involve oxidation or the formation of a thin layer of a new compound.
What physical changes may take place when a substance is heated?
When a substance is heated, it may undergo physical changes such as melting (solid to liquid), boiling (liquid to gas), sublimation (solid to gas), or expansion when the particles move faster and spread apart. Additionally, some substances might change color, texture, or shape due to the heat affecting their molecular structure.
What is observed when Fe2SO4 and FeSO4.7H2O are heated strongly?
When FeSO4·7H2O is heated strongly, it loses its water molecules and forms anhydrous FeSO4. The color changes from blue to white or pale green due to the removal of water molecules, and the compound becomes anhydrous iron(II) sulfate (FeSO4).
What is it called when a substance changes color in response to pH?
This is a pH indicator.
What do you call a substance which is used to show changes in pH by its change in color?
An indicator. It is a substance that changes color in response to a change in pH, making it a useful tool in chemistry to visually determine the acidity or basicity of a solution.
What change might be observed when a substance is heated?
When a substance is heated, it may undergo physical or chemical changes such as melting, evaporation, sublimation, or decomposition. These changes can result in alterations in the substance's physical state, color, texture, or chemical composition.
Why green color of feso4 changes when heated?
The green color of FeSO4 changes when heated because it undergoes a dehydration reaction. Heating causes the water molecules in the compound to be removed, leading to a change in the oxidation state of iron from +2 to +3, resulting in a color change.
What changes color when heated?
Thermoschroism
What substance changes color when exposed to an acid or base?
An indicator is a substance that changes color when exposed to an acid or base.
When a metal changes color because it has reacted with another substance and what change occured?
The change in color of a metal when it reacts with another substance is due to the formation of a new compound on the metal's surface. This compound may have different optical properties that manifest as a distinct color change. The reaction could involve oxidation or the formation of a thin layer of a new compound.
Which combination describes the flame color of the compound when heated?
Which combination describes the flame color of the compound when heated?
What is the color of copper carbonate when heated?
When copper carbonate is heated, it changes from its green color to black copper oxide.
Why does an egg chang color and texture when heated?
because its getting heatAn egg changes color and texture when heated due to a chemical change and the proteins escaping turning it solid and changing the color.
What color if the ferrous sulphate is heated?
ferrous sulphate when it is heated it changes into red brown color
What physical changes may take place when a substance is heated?
When a substance is heated, it may undergo physical changes such as melting (solid to liquid), boiling (liquid to gas), sublimation (solid to gas), or expansion when the particles move faster and spread apart. Additionally, some substances might change color, texture, or shape due to the heat affecting their molecular structure.
What is a compound that changes color when in contact with an acid or a base called?
That compound is called an acid-base indicator. These indicators change color based on the pH of the solution they are in, making them useful for identifying whether a substance is acidic or basic.
What is a substance that changes color?
An example of a substance that changes color is litmus paper. Litmus paper is commonly used in chemistry as an indicator to determine the acidity or alkalinity of a solution, as it changes color in response to the pH level of the substance it is in contact with.
