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When platinum is heated then cooled to its original state is a physical change?
Wiki User
∙ 11y ago
physical change, because the platinum is restored to its original state.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoYes. Phase changes are always physical changes.
Wiki User
∙ 11y agophysical change
Wiki User
∙ 14y agoYes it is, but why?
Wiki User
∙ 11y agoyes it can be if heated enough to melt
Wiki User
∙ 6y agoHeating is a physical process.
Wiki User
∙ 7y agoYes, we do.
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Setting of a jelly-is it a chemical change?
Yes, it is. This is because there is a physical change. Being a liquid forming a solid. There is a chemical reaction when the hot water is added to the powder, forming a liquid, which is cooled, forming a solid
A shiny black solid was heated and formed a purple vapour which on cooling became a black solid again Is this a physical or chemical reaction and explain?
This is a physical change. The solid is Iodine, which sublimes on heating to form gaseous Iodine. When cooled, it sublimes again to form solid Iodine. Since this change is only the change of physical states, and since there's no change in the chemical structure of Iodine, this is a physical change.
If cooled does most solids change into gases?
When cooled gases change to liquids (usually) and then solids Solids don't change to gases upon cooling
Is when a burner gets red hot an example of a chemical change?
This is indeed a physical change. There is a colour change, but if the substance is cooled down it is still the same. All that providing electricity is really doing is adding Energy to the burner.
Is the conversion of liquid water into gaseous water is a chemical change?
No, the only thing being changed are the physical properties of the water, its still just water after the conversion
Is wax melting a chemical or physical or chemical property?
Physical change. The wax was solid and now it is a liquid. All phase changes are physical changes.
Is metal cooled and taken out of a mold a physical or chemical change?
This would be a physical change because there is no change in the chemical make up of the metal and there is no creation of new substances there is simply a change in state for the metal.
When liquid is cooled Its particles become?
At the feezing point the liquid become a solid.Freezing is a physical change.
Does metal expand when heated or cooled?
No. A chemical change occurs only when a new substance is produced with new and different properties. In your example, a physical change occurred because only the metal's physical properties were affected. Nothing new was created.
Which of these is defined as the change in physical state from gas to liquid?
When gases are cooled, they convert to liquids. This is termed as condensation.
Is butter turning hard when cooled a physical change?
Yes, whenever a substance changes its physical form without changing the chemical composition, it is considered a physical change. In this case, liquid butter turning hard does not become a different substance, so it is a physical change.
Is Change of state is chemical or physical property?
No, a change of state is not a chemical change, for it can be changed back to its original form and their is no change in the molecular composition of the substance. A chemical change is when it cannot be changed back. The above example is an example of a physical change. Example:- ice when heated changes into water and water when cooled changes into ice.
When water turns into steam is it a chemical change?
no, physical. The steam can return to water if cooled. Chemical changes are irreversible.
Is heating a chocolate chemical change?
Yes, burning of a sparkle is a chemical change because once sparkle has changed its form it cannot come into its previous form. For understanding you can also take the example of cooked rice which once cooked cannot be raw again.
Setting of a jelly-is it a chemical change?
Yes, it is. This is because there is a physical change. Being a liquid forming a solid. There is a chemical reaction when the hot water is added to the powder, forming a liquid, which is cooled, forming a solid
Why liquid water changing into steam is a physical not a chemical change?
The steam when cooled changes back to liquid water. A chemical change is usually not so reversible.
What is change in a substance that does not involve a change in the identity?
Then the physical characteristic of a substance change, it is called a change in state. This most commonly occurs when a substance is heated or cooled. The states that substances are solid, liquid and gas. A common example would be water: ice (solid), water (liquid), and steam (gas).
