Structure & Polarity | Cohesion | Adhesion | Thermal Properties | Solvent Properties |
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What is water?
This is formed when 2 hydrogen atoms and 1 oxygen atoms combine
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What is cohesion?
Cohesion is when molecules of the same type are attracted to each other.
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What is adhesion?
The joining of two different substances due to attractive forces that hold them.
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What are the thermal properties?
Water has the capacity to absorb significant amounts of heat before changing state.
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What is the Universal Solvent?
A common term for water.
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What is Negative?
This is the polarity of oxygen
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Name cohesive properties.
-Cohesion is the ability of like molecules to stick together
OR -Water is strongly cohesive (it will form hydrogen bonds). |
What are polar bonds?
Electrons are not shared evenly over the covalent bond and the atoms involved have small partial charges
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What is the significance of hydrogen bonds in thermal properties?
The H-bonds need to be broken before a change in state can occur and this requires the absorption of energy.
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What are Ions?
Water can dissolve any substance with this in it.
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what is positive?
This is the polarity of hydrogen
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Explain surface tension.
The hydrogen bonding between water molecules allows the liquid to resist low levels of external force (surface tension).
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What is capillary action?
Attraction to charged or polar surfaces allow water to flow in opposition to gravitational forces.
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Why is water is an excellent medium for living organisms?
Water is relatively slow to change temperature.
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What are electronegative atoms?
Water can dissolve these.
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What is a hydrogen bond?
This forms between an oxygen and a hydrogen atom
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What are hydrogen bonds?
The bond is between the hydrogen of one water molecule and the oxygen atoms of another water molecule, not between the two hydrogen atoms.
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What is the significance of capillary action?
This capillary action is necessary to allow water to be transported up plant stems via a transpiration stream.
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What is heat capacity?
Water supports the maintenance of constant conditions, internal and external.
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What is the dissociation of the atoms?
This occurs because the polar attraction of large quantities of water molecules can sufficiently weaken intramolecular forces.
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What is a Net Charge?
What is the total Polarity of H20 Called
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Why is surface tension important?
The high surface tension of water makes it sufficiently dense for certain smaller organisms to move along its surface.
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What are the adhesion properties?
-Adhesion is the ability of dissimilar molecules to stick together
OR -Water will form intermolecular associations with polar and charged molecules. |
What are hydrogen bonds?
A weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.
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What are dispersive hydration shells?
What are the slightly charged regions of the water molecule surround by atoms of opposing charge called...
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