3.1.7 - Water
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4 Terms
Why is water polar?
There is an uneven distribution of charge due to the oxygen being slightly negative and the hydrogens being slightly positive
What is the structure of 2 water molecules bonded together
What are 5 key properties of water?
It is a metabolite - meaning used in many reactions (such as condensation and hydrolysis)
It is a solvent - meaning solutes can be dissolved in it (important because metabolic reactions happen in solution)
Has a high heat capacity - meaning it takes a lot of energy to raise temperature of water therefore buffers temperature changes
Has a large latent heat of vaporisation - meaning it takes a lot of energy to turn liquid water to a gas (provides a cooling effect)
Has strong cohesion between water molecules - supports water columns (for example in a plant xylem)
What is a metabolic reaction?
A chemical reaction that happens inside a living organism to keep it alive and functioning