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How is a chemical change different from a physical change?
a physical change can be reversed a chemical one can'tA chemical change is when a new substance, with new and different properties, is produced. The identity of the original substance is changed. In contrast, a physical change is when one or more of a substance's physical properties have simply been altered; no new substance is produced.
Is a change that produces a new element a physical change?
No, it is a chemical change. ---------------------------------- Yes, it is a physical change because this change not involve a chemical reaction but a nuclear reaction followed by a change in the number of protons and neutrons.
What happens to the identity of a substance when it makes a physical change?
there is to types of change to a substance chemical and physical in a physical change the result is a mixture also most times you can change your end result into what you started with e.g.freeze-melt evaporate-condesate
Is heating a mixture a chemical or physical change?
Heating a wood splint is a chemical change. If this was done in something like a test tube, you will see many things occur that indicate this. First, you will see a werid kind of smoke, the splint turning into black stuff, and a really bad smell. Well the smoke is CO2 and the black stuff is ash from the burning. Because there is a new substance being made and the identity of the original substance(your splint) has changed, the reaction is chemical.
Is flattening a physical or chemical change?
Flattening is a physical change because it does not alter the chemical composition of the object being flattened. The molecules in the object are simply rearranged to change its shape without forming new substances.
Why is separating sand from gravel a chemical change?
No it is not a Chemical Change. It is a Physical Change.
Is a chemical change a physical blend of two or more components?
No. A chemical change is when the chemical identity of substance or set of substances changes to a new substance or set of substances. Physically blending or mixing two components is a physical change.
Does the release of the scent perfume from a bottle show a chemical change?
No. It is a physical change. Substances are only move from inside a container to outside it, the identity of the substances does not change.
Is the change of identity a physical or chemical property?
If you mean a change in chemical identity, that would be a chemical change.
Is Molding food a chemical or physical change and why?
its a physical joking its a chemical change a physical is one substances, and a chemical change is two or more substances so the answer is to food molding a chemical change
What of the following involves a change in the identity of the matter undergoing change?
A change in the identity of the matter undergoing change involves a chemical change. During a chemical change, the substances involved undergo a transformation that results in new substances with different properties. Examples include reactions such as rusting of iron or combustion of wood, where the original materials are fundamentally altered. In contrast, physical changes do not alter the chemical identity of the substance.
What happens in a chemical change but not in a physical change?
If you bend a paper clip it is a physical change because it is still a paper clip. It's chemical identity has not changed. In a chemical change, the chemical identity of a substance changes. For example, if the paper clip were made of steel and rusted, then it's chemical identity would change to include oxygen chemically bonded to the metal, iron oxide.
When substances are formed that are different from the starting substances has physical change occurred?
No, a physical change refers to a change in the form or appearance of a substance without any change in its chemical composition. If new substances are formed with different chemical properties, then a chemical change has occurred, not a physical change.
Is it a physical change or a chemical change when substances combine to make new substances with new properties?
Chemical change.
What is the diffeference between a physical and a chemical change?
A physical change is when a substance changes, but still keeps its identity. When a chemical change occurs, the substance changes its identity.
How do you determine weather a property is physical or chemical?
To determine whether a property is physical or chemical, consider whether the property can be observed or measured without changing the substance's identity. Physical properties, such as color, melting point, and density, can be observed without altering the material. In contrast, chemical properties, like reactivity and flammability, describe how a substance interacts with other substances and involve a change in chemical composition. If a property involves a change in identity or formation of new substances, it's chemical; if not, it's physical.
What are facts about physical and chemical change?
Chemical changes take place on the molecular level
