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What is the most important question to ask to determine whether a change is physical or chemical?
Wiki User
∙ 12y ago
did the composition change
Wiki User
∙ 12y ago
Mayhia Clark
Wiki User
∙ 13y agoPhysical changes do not change the properties of a substance. For example, water can freeze or boil, but it is still always water. Physical changes involve no chemical reaction.
Iron oxidizing, is an example of a chemical change. There was a rearrangement of atoms.
Wiki User
∙ 12y agoA physical change can be seen with your eyes. A chemical change may or may not be seen, but it is much harder to reverse. Also, in a chemical change a bi-product ( such as heat, light or some form of energy) is produced along with a change.
Wiki User
∙ 11y agoA physical change to a substance may alter the shape, size, color, or texture, but the basic properties are not changed. In many cases, a physical change such as temperature, phase, or shape can be undone using a reverse process.
A chemical change alters the molecular composition of the substance, creating a new substance that can have vastly different chemical properties. Chemical changes always involve the addition of new materials to the substance's molecules, or the removal of elements or compounds from it, or both.
Wiki User
∙ 11y agoA physical change does not change the chemical composition of the substance undergoing the change. A chemical change does involve a change in chemical composition of the reactants to form new products with different properties from the reactants.
Wiki User
∙ 7y agoA chemical change involve the modification of the chemical composition of reactants.
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Is support combustion chemical or physical change?
It is a phiscal change because the combustion doesn't change. I'm in the 7th grade and nobody older than me answered this question! That is a shame!
Is chemical reactions a physical or chemical properties?
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Is Antioxidants are used as food preservatives in margarine a chemical or physical property?
Answer this question…
Is melting of glass a chemical or physical change?
Physical change because no new substance is created.
Is when it remains unchanged in the presence of nitrogen chemical or physical?
When something remains unchanged in the presence of nitrogen is it a physical change?
What is the most important question to ask determine whether a change is a physical or chemical change?
did the composition change
Is iron a chemical or a physical property?
actually i cannot answer this question because i have no idea for this question....thank you(2x)
Is mashing banana physical or chemical?
It is a physical Change. If that answers your question
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Is uranium a physical or chemical?
What is the question exactly? If it is about Uranium having physical and/or chemical properties, the answer is that it has both. Every single element and compound in this universe has both physical and chemical properties.
what element cannot be either physical or chemical?
All elements have both chemical and physical properties. The question as asked has no meaning.
Is squeezing a watermelon to make watermelon juice a physical or chemical change?
physical, when it is changed by something not at the molecular level it is physical like your question, this is physical, if it were chemical it would be something like pouring acid on it
Is support combustion chemical or physical change?
It is a phiscal change because the combustion doesn't change. I'm in the 7th grade and nobody older than me answered this question! That is a shame!
Is uranium a physical or chemical property?
What is the question exactly? If it is about Uranium having physical and/or chemical properties, the answer is that it has both. Every single element and compound in this universe has both physical and chemical properties.
Is chemical reactions a physical or chemical properties?
ChemicalTo determine it, you must alter the identity of the substance. See the Related Questions link to the left of this answer: "What is the difference between a chemical and physical property?"PhysicalElements cannot be altered, without disrupting the physical structure of the atom, so the atomic structure between the protons, neutrons, and electrons are physical.Barney9So which one is it...? Chemical or physical?~Physical. Barney9's answer was a little confusing.. but overall, you can identify an element without disrupting the atomic structure of it's atoms.
Is Antioxidants are used as food preservatives in margarine a chemical or physical property?
Answer this question…
Is melting of glass a chemical or physical change?
Physical change because no new substance is created.
