Biology paper 1 terms

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hydrogen bonds

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hydrogen bonds

In water molecules, hydrogen bonds are formed between the partially positive hydrogens of one water molecule and the partially negative oxygens of other water molecules.

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2

hydrophilic

Hydrophilic substances are attracted to water and form intermolecular bonds. They are said to be soluble in water.

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3

non-polar

Non-polar molecules are hydrophobic and do not interact with water

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4

Cohesion

cohesion explains water’s surface tension properties, and is responsible for maintaining an uninterrupted water column

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5

adhesion

adhesion explains capillary action, in plants, adhesion allows water to travel by capillary forces

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6

viscosity

stroperigheid

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