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It is sometimes difficult to decide whether an observed change is physical or chemical because of its expression. Some reactions create subtle changes and some may appear to be physical or chemical until, upon closer observation externally or internally, it is actually turns out to be the opposite.

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โˆ™ 2014-10-06 20:20:00
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Q: Why is it sometimes difficult to decide whether an observed change is physical or chemical?
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How do you decided whether an observed property of matter is a physical chemical property?

If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.


How do you decide whether an observed property of matter is a physical property?

If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.


How is chemical property different than a physical property?

A chemical property can only be observed by changing the chemical composition of the substance, while a physical property can be observed without a change in chemical composition.


What is the diffence between physical and chemical properties as well an physical and chemical changes?

Physical properties can be observed without changing the chemical composition of a substance. Chemical properties can only be observed by changing the chemical composition of the substance. In a physical change, the chemical composition of the substance does not change. In a chemical change, the chemical composition of the substance changes.


Chemical or physical something you can observe?

Physical changes are those that can be observed.


How does physical property differs from chemical property?

A physical property can be observed without changing what the substance is made of. A chemical property can only be observed by altering a substance through a chemical change.


Difference between physical property and a chemical property?

A physical property can be observed without changing the material's composition. A chemical property can only be observed when a chemical change takes place.


Difference between chemical property and physical property?

A physical property can be observed without changing the material's composition. A chemical property can only be observed when a chemical change takes place.


What is the different between the physical and chemical properties of a substance?

A physical property can be observed without changing the material's composition. A chemical property can only be observed when a chemical change takes place.


What are physical property and a chemical property?

A chemical property can only be observed during a chemical reaction in which the substance in question changes chemically. A physical property can be observed without a chemical reaction, in which the substance does not change chemically.


What is the difference between a chemical and physical properties of matter?

A chemical property can only be observed by causing a change in the chemical composition of the substance through a chemical reaction. A physical property can be observed without changing the chemical composition of the substance.


What is the difference between the physical properties and chemical properties of a substance?

A physical property can be observed without changing the material's composition. A chemical property can only be observed when a chemical change takes place.


How do you decide whether an observed property of matter is a chemical property?

If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.


Why are chemical properties harder to observe than physical properties?

Physical properties can be observed and measured, chemical cannot.


How do you observe chemical properties?

Chemical properties are observed by chemical reactions and their products, the identity of products can be observed either by physical changes or by further reactions and their products.


Physical and chemical property?

A physical property of matter is something that can be observed without changing it (weight, color, volume). A chemical property is observed through changing the chemical identity of a substance (flammability, oxidation, reactivity).


Is physical state chemical or physical?

A physical state is physical and not chemical Physical Property is observed without changing a substance into another substance. Chemical property is the ability of a substance to change into different substance.


What are physical and chemical properties of paper that can be observed?

Physical:It's white and it's soft.Chemical:It burns when set to fire.


Is bitterness a chemical or physical property?

Bitterness is a physical property because it can be observed without changing the chemical composition of the substance.


Is bitterness a physical or chemical property?

Bitterness is a physical property because it can be observed without changing the chemical composition of the substance.


Is state is physical or chemical?

A physical state is physical and not chemical Physical Property is observed without changing a substance into another substance. Chemical property is the ability of a substance to change into different substance.


How will identifying if a property is chemical or physical?

A physical property can be observed without changing the sample. Chemical properties requires you to change the sample.


Can neutralize a base is physical property or chemical property?

This is a chemical property because it can only be observed in a chemical reaction.


What are some physical and chemical properties of paper that can be observed?

it white and its soft


What is difference between a physical property and a chemical property?

A physical property can be observed without changing the material's composition, such as size, shape, color, and density. A chemical property can only be observed when a chemical change takes place, such as the formation of a gas or precipitate.