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Thermal Decomposition
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What is the name of the substance formed when iron is heated?
The substance formed when iron is heated in the presence of oxygen is called iron oxide, commonly known as rust.
When a substance is blank it gains thermal energy?
When a substance is heated, it gains thermal energy. This increased energy causes the substance's particles to move faster and its temperature to rise.
When something is heated what changes?
When something is heated, the temperature of the substance increases, causing the molecules in the substance to move faster. This increased molecular movement can lead to changes in the physical state of the substance, such as melting or boiling.
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 do gases and liquids rise when heated?
Gases and liquids rise when heated because the increase in temperature causes the particles in the substance to gain energy and move faster, leading to a decrease in density. This causes the heated substance to become less dense than its surroundings, resulting in it rising.
What is the name of the substance formed when iron is heated?
The substance formed when iron is heated in the presence of oxygen is called iron oxide, commonly known as rust.
What type of substance is heated by radiation?
Any substance that absorbs the radiation is heated by it.
What substance is heated with limestone to prodce cement?
its heated with something
When substance are heated they?
They expand
Does the volume of an object change if heated?
The volume of a substance increases when heated
What is the name of the substance created when zinc is heated with sulphur?
The substance created when zinc is heated with sulphur is zinc sulfide.
When a substance is heated the particles do what?
accelerate
What happens when a ferromagnetic substance is heated to high temperature?
At a specific high temperature, called Curie point, the ferromagnetism disappear.
When a substance is blank it gains thermal energy?
When a substance is heated, it gains thermal energy. This increased energy causes the substance's particles to move faster and its temperature to rise.
What is the necessary temperature for a liquid to change to a gas?
It is called the boiling point. It varies according to the substance being heated and the ambient pressure
What is the symbol for mass of the substance being heated?
The symbol for mass of the substance being heated is typically represented by the letter "m" in physics and chemistry equations.
How does the volume and density of a substance change when it is heated?
When a substance is heated, its volume generally increases due to thermal expansion. On the other hand, the density of the substance usually decreases since the same amount of matter now occupies a greater volume.
