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If you take borax and boiling water and make crystals is this a physical change or a chemical change?

It is a chemical change, because the borax reacts to the heated water.


Is adding water to heated copper sulfate crystals chemical or physical?

Adding water to heated copper sulfate crystals is a chemical change. When water is added to heated copper sulfate crystals, the copper sulfate undergoes a chemical reaction where it dissolves in the water to form a solution. This is a chemical change because the chemical composition of the copper sulfate is altered during the process.


Is black crystals of iodine turning into purple vapour of iodine a physical change or a chemical change?

The transformation of black crystals of iodine into purple vapor of iodine is a physical change. This is because the change does not involve a change in the chemical composition of iodine; it only involves a change in the physical state from solid to gas.


Is water is heated and changed to steam a physical change or chemical change?

chemical


Is putting pottery in heated place a physical or chemical change?

It is a physical change


When you roast a marshmallow is it a physical change or a chemical change?

Roasting a marshmallow is a physical change, not a chemical change. The marshmallow undergoes a change in its physical state as it is heated, but its chemical composition remains the same.


Does Heated oil turns brown is a physical or chemical property?

physical change hunnythe color would be the property of the oilbut as you can see the color changesthe chemicals do not


Reaction of copper and heat is physical change or chemical change?

The reaction of copper with heat is a physical change because no new substances are formed. When copper is heated, it undergoes a change in state from solid to liquid without changing its chemical composition.


Is heating air a chemical change or physical change?

between your 2 choices its physical, when air is heated molecules move more quickly


Is fireworks a physical or chemical change?

Fireworks involve both physical and chemical changes. The lighting of the firework (ignition) is a chemical change that triggers a series of reactions which results in the colorful display seen (physical change) as different elements are heated and produce light.


Is chemical change a black solid when heated changes into a purple gas?

Yes, this observation of a black solid turning into a purple gas when heated suggests a chemical change. The change in color and state indicates that new substances are being formed through chemical reactions taking place in the solid material.


When cheese is heated and melted is physical or chemical?

As long as you don't burn the cheese while heating it, the change is purely physical.