
Give an example of physical as well as chemical change ?
Answer
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Hint: Everything in our environment changes over time. Physical or chemical changes may occur. All that has mass and occupies space is referred to as "matter." It has physical and chemical properties and is made up of tiny particles.
Complete answer:
When only the physical properties of a material change, such as its form, size, colour, state, or appearance, it is said to undergo a physical change. Its chemical composition has not changed. The following are some characteristics of a physical change:
The internal structure of a material is unaffected; only the molecules are rearranged.
There is no new substance created.
When the chemical properties of a material change, it is said to have undergone a chemical change. As a consequence, atomic bonds are either formed or broken at the molecular level. The following are some characteristics of a chemical change:
One or more new substances are created as the original composition of the substance changes.
Heat, light, and electricity are examples of energy that can be released or consumed.
The burning of wood is an example of a change that is both chemical and physical. When heated, the moisture in the wood turns to vapour, which is a physical change. Burning wood produces carbon dioxide (among other products) and results in a chemical change.
Note:
Physical change is temporary in nature, whereas chemical change is permanent in nature. The majority of physical changes can be reversed. Even after the change, we can get the substance back. In certain cases, a chemical change is permanent. It cannot, at the very least, be reversed by simple physical means.
Complete answer:
When only the physical properties of a material change, such as its form, size, colour, state, or appearance, it is said to undergo a physical change. Its chemical composition has not changed. The following are some characteristics of a physical change:
The internal structure of a material is unaffected; only the molecules are rearranged.
There is no new substance created.
When the chemical properties of a material change, it is said to have undergone a chemical change. As a consequence, atomic bonds are either formed or broken at the molecular level. The following are some characteristics of a chemical change:
One or more new substances are created as the original composition of the substance changes.
Heat, light, and electricity are examples of energy that can be released or consumed.
The burning of wood is an example of a change that is both chemical and physical. When heated, the moisture in the wood turns to vapour, which is a physical change. Burning wood produces carbon dioxide (among other products) and results in a chemical change.
Note:
Physical change is temporary in nature, whereas chemical change is permanent in nature. The majority of physical changes can be reversed. Even after the change, we can get the substance back. In certain cases, a chemical change is permanent. It cannot, at the very least, be reversed by simple physical means.
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