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Differentiate between contraction and expansion. Are they always reversible?

List the physical and chemical changes that take place during the germination process.

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Final answer:

Contraction and expansion explain size changes in substances, with physical changes often reversible but chemical changes irreversible. Germination involves physical and chemical transformations in seeds.


Explanation:

Contraction and expansion refer to changes in volume or size of a substance. Contraction involves a decrease in volume, while expansion involves an increase. In general, physical changes are usually reversible, while chemical changes are often irreversible.

During the germination process of a seed, several physical and chemical changes occur. Physical changes include the swelling of the seed coat and the emergence of the radicle and plumule. Chemical changes involve the breakdown of stored food into usable nutrients by enzymes, initiating growth.


Learn more about Physical and chemical changes here:

https://brainly.com/question/38267226


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