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What does it mean when there is physical change?
A physical change is one where no new substance is produced. Melting is an example of a physical change. When you melt iron, you get liquid iron, it's still the same chemical substance. If you melt copper, you get liquid copper, not liquid iron.
How does the force due to hammering affect the piece of iron from class 8th?
When hammering a piece of iron, the force applied by the hammer causes the iron to change shape through deformation. This force creates stress within the iron, which can lead to permanent deformation or reshaping of the iron piece. The impact of the hammering force depends on the intensity and frequency of the strikes, as well as the properties of the iron itself.
What kind of change causes iron to rust is a physical change?
The process of iron rusting is a chemical change, not a physical change. It involves a chemical reaction between the iron, oxygen, and water in the environment, resulting in the formation of iron oxide (rust).
What type of matter can change shape and volume?
The matter that can change shape and volume is gas.
What changes shape but doesn't change volume?
A gas can change shape but it doesn't change volume, a liquid also changes shape but doesn't change volume.
Is a change in shape a clue that indicate a chemical change?
It is a physical change unless it is caught on fire to mold into a different shape then it would be a chemical change. The substance that does change shape does not develop new chemical properties.
Is bending a nail a physical change or a chemical change?
That's a physical change. Assuming the nail is made of iron (Fe), when you bend it, you simply change its shape. You don't change the fact that it's still iron.
How is cutting a physical change?
Cutting iron is considered a physical change because there is not a new substance being formed. It is just changing the shape. It is still just iron.
What is an example of a physical change and a chemical change for iron?
Physical change: bending. Chemical change: Rusting (oxidation). An example of both in one item: A wrought iron fence was heated and bent into a decorative pattern. After 20 years, the fence shows evidence of deep rusting, especially on decorative curves.
Why is a hot piece of iron hammered?
Iron is hammered to change its shape to a more useful shape. This is done when it is hot because its tensile strength decreases rapidly as temperature increases; it is easier to deform it permanently when it is hot.
Hammering hot iron into a sheet chemical or physical change?
Hammering hot iron into a sheet is a physical change. The process involves changing the shape and size of the iron without altering its chemical composition. The atoms in the iron remain the same, only the physical properties are altered.
What changes in size shape or state?
This is a physical change. An example is breaking glass. It does not change its material, but its size shape or state. A chemical change is where it reacts with something. Iron rusting is an example, as the iron reacts to water.
Is expansion of iron a physical change?
Yes, the expansion of iron is a physical change. This is because the atoms of iron are not changing chemically when it expands, but rather the arrangement of the particles is changing due to heat causing them to move farther apart.
How does an iron ball and water differ with respect to their shape size compressibility and diffusion?
because of the change of state of matter
Hard brittle iron is iron is poured into a particular shape?
Cast iron
Is it a physical or chemical change when iron rusts?
When iron rusts, it is a chemical change. The substance that is produced (the rust) is a completely new substance. Therefore, the iron has changed chemically, and not just physically, like being melted into a different shape. It's chemical structure has been altered.
Does iron take the shape of it's container?
When molten or gaseous, yes.
