Question

what is physical change and periodic change
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Answer 1

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Periodic Changes :

Periodic changes are changes that occur periodically at regular intervals .

Physical Changes :

A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible.

Answer 2

Answer:

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Explanation:

Physical change is a type of change where the physical properties of matter change. A change of state of matter, change in colour, odour, solubility, etc. all are examples of physical change.

During a physical change, neither the composition nor the chemical nature of matter is changed. During this change, molecules rearrange themselves without affecting the internal composition. A physical change doesn’t affect the chemical property... Eg;- melting of ice.

a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns. This has 118 elements in it...