Question:

When potatoes are put in salt, why do they grow while others don't?

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So if you put a potato into salt water and wait, it will increase in size. Why is this solute concentration happening? And also, why don't other vegetables grow when they are put in that same water?

PLEASE HELP.

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2 ANSWERS


  1. because potatoes are heated


  2. When the potato pieces are put in to the water there are more water molecules in the water then there is in the potato cells; therefore the water molecules move by osmosis into the potato cells through the membrane. This means that the mass of the potato piece will increase and the potato will feel harder.

    When the potato pieces are put in to the salt water there are more water molecules in the potato cells then in the salt water; therefore the water molecules by osmosis into the water from the potato. This means that the mass of the potato piece will decrease, and it will feel really soft. The stronger the concentration of the salt solution the more it will decrease in weight.

    Going by the two theories above which makes sense to me - unless the salt water is really low in salt concentration to the extent where the water is moving INTO the potato [Potato may also have very little water inside].

    If I happen to find out why I'll post back - sorry I can't help you just yet ! Good luck.

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