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Two substances that expand when heated are water and Mercury. Heating these substances causes their molecules to become more energized and move farther apart, leading to an increase in their volume.

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In a thar molecules --------expands on heating?

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Does matter expands or contrast when heated?

Matter typically expands when heated. This is because heating causes the atoms and molecules within a substance to vibrate more vigorously, leading to an increase in their average distance from each other. This results in an overall increase in volume or size of the material.


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 substance expands when frozen?

water


What happens to a substance or object when it is heated?

It expands.


Why you won't use copper as heating element?

we wont use copper as a heating element because it expands on heating and it can effect the thermostat


Why can a jammed metal lid of a jam jar be opened by heating?

When you heat the jar, the glass expands only slightly while the metal expands much more. This is governed by the coefficient of expansion for the substance. The greater the coefficient of expansion, the more the substance expands. Since metal generally has a much higher coefficient of expansion, the lid of the jar will get bigger while the jar only expands slightly. That makes everything a little looser, which makes it much easier to open the jar.


Heating a white substance produces a vapor and black material Was the substance an element or a compound?

compound as it decomposed into two separate things.


Which substance expands the most in boiling water when they are sealed in syringes is it air iron or water?

Air expands the most.


When heating a substance what happens?

Heating a substance can result in a chemical reaction, which usually results in a simple combustion reaction. This is because Oxygen, or O2, is added to the substance, which can dramatically alter the substance.


Substance left after heating coal or petrol?

The substance left after heating coal is coal ash. The substance left after heating petrol is a residue called coke. Both of these byproducts are typically composed of carbon and other elements.


Is the expansion of a substance due to heat?

YES, as far as I'm concerned, a substance expands when heated and contracts when cooled.