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Why Iron expands on heating is a physical change?
Iron expands on heating due to an increase in the kinetic energy of its atoms, causing them to vibrate more and occupy a larger volume. This process does not alter the chemical composition of iron; it remains iron throughout the expansion. Since the change is reversible and does not produce a new substance, it is classified as a physical change.
Why iron expands on heating is considered as a physical change?
Iron expands on heating because the increased thermal energy causes its atoms to vibrate more vigorously, leading to greater distances between them. This process is reversible; when the iron cools down, it contracts back to its original size without any change in its chemical composition. Since the substance remains iron throughout the process and no new substances are formed, this expansion is classified as a physical change.
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.
Is a sugar cube grounded up a chemical or physical change?
Physical.
Is iron nail rusts in water a chemical change or a physical change?
Chemical change, oxygen binds with iron.
Why Iron expands on heating is a physical change?
Iron expands on heating due to an increase in the kinetic energy of its atoms, causing them to vibrate more and occupy a larger volume. This process does not alter the chemical composition of iron; it remains iron throughout the expansion. Since the change is reversible and does not produce a new substance, it is classified as a physical change.
What is a example of a physical change of iron?
Melting is a physical change of iron.
Is expansion physical or chemical change?
Expansion is a physical change because it involves a change in the state or size of matter without altering its chemical composition.
Is melting a iron rod a physical change?
Melting an iron rod is a physical change
Is melting iron physical change or physical property or chemical change or chemical property?
Melting iron is a physical change because it does not alter the chemical composition of the iron. It is a change in state from solid to liquid without forming a new substance.
Is iron melting a physical change?
Melting iron is a strictly physical change (change of state). The molten and solid iron would be identical by any chemical test or reaction.
Is iron a chemical or physical change?
Iron is a chemical element, not a "change".
Is an iron a chemical or physical change?
Iron is a chemical element, not a "change" !
Is bending an iron nail physical change or chemical change?
physical
Is heating an iron nail a physical or chemical change?
Heating is a physical change.
Why is a rusted nail chemical change not physical change?
Because the Iron in the nail is no longer just iron but oxidation plus iron, a physical change to the nail would be to cut it in-half.
Why iron expands on heating is considered as a physical change?
Iron expands on heating because the increased thermal energy causes its atoms to vibrate more vigorously, leading to greater distances between them. This process is reversible; when the iron cools down, it contracts back to its original size without any change in its chemical composition. Since the substance remains iron throughout the process and no new substances are formed, this expansion is classified as a physical change.
