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Answer:
Reversible change
A reversible change is a chemical change where no new materials are created and the original material can be recovered. Examples include freezing water to make ice or melting chocolate.
Irreversible change
An irreversible change is when something cannot be changed back to its original form. In many irreversible changes, new materials and substances are formed.
Physical change
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.
Chemical change
A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed. It results when a substance combines with another to form a new substance (synthesis or either decomposes to form more substances).
A practical use of expansion of liquids
liquid expands at a faster rate than the tube, it rises as the temperature increases and drops as the temperature decreases. Automobile engine coolant systems provide a practical example of a liquid-thermal expansion problem.
Answer:
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