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Physical change is a concept introduced to contrast with the concept of chemical change. A physical change is any change not involving a change in the substance's chemical identity. Matter undergoes chemical change when the composition of the substances changes: one or more substances combine or break up (as in a relationship) to form new substances. Physical changes occur when objects undergo a change that does not change their chemical nature. A physical change involves a change in physical properties. Physical properties can be observed without changing the type of matter. Examples of physical properties include: texture, shape, size, color, odor, volume, mass, weight, and density. An example of a physical change occurs when making a Baseball bat. Wood is carefully crafted into a shape which will allow a batter to best apply force on the ball. Even though the wood has changed shape and therefore physical properties, the chemical nature of the wood has not been altered. The bat and the original piece of wood are still the same chemical substance. Changes are sometimes hard to categorize strictly as physical or as chemical. Dissolving a salt in water involves the breaking of chemical bonds, yet is often described as a physical change. Some teachers hold that a chemical change is a rearrangement of atoms, but many physical changes also involve the rearrangement of atoms. Many chemical changes are irreversible, and many physical changes are reversible, but reversibility is not a certain criterion for classification. Although chemical changes are often recognized by an indication such as odor, color change, production of a precipitate, or production of a gas, every one of these indicators can result from physical change.
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What phiscal change does water go throgh when it heated or cooled?
you tell me
i neeed 30 phiscal change and 100 chemical change got its boi?
give me 50 physical changes and 10o chemical change
Is melting butter for popcorn a phiscal change?
Physical because once you melt it you can put it in a fridge and it will go back to the original state from before you melted it
What doE phenotype?
an organisms phiscal appearance
Cement hardens a phiscal change?
Describe the manufacture of cement and know how changes at the molecular level that take place during the setting of concrete give it its strength and durability
Why is the Rocky Mountains bigger than the appalachian?
Because of phiscal geography
What does phiscal properties mean in science?
Physical properties in science refer to characteristics of a substance that can be observed and measured without changing the composition of the substance. Examples include color, density, melting point, boiling point, and conductivity. These properties help us identify and classify different materials.
Where do phiscal therapist work?
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how did martin Luther king fight to get equal rights for everyone?
he used mental and phiscal
Which two regions are named because of phiscal features that are common to the group of the states?
THat is what i want to know
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 water boiled to make pasta a chemical or a physical Change?
Boiling water to make pasta is a physical change because the water undergoes a phase change from liquid to gas, but its chemical composition remains the same. The molecules in water are rearranged, but no new substances are formed during the boiling process.
