Water

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  • Created by: zoolouise
  • Created on: 27-03-16 15:22
Why is water a polar molecule?
Water is a polar molecule because of the slightly negatively charged oxygen portion and slightly positively charged hydrogen portion.
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What's the charge of water?
Water has no charge.
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What happens when the hydrogen and oxygen portions interact?
The hydrogen and oxygen portions interact and form hydrogen bonds. Individually they're weak, collectively they're a strong lattice framework (cohesion)
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What does water having a high specific heat mean?
A large amount of energy is required to raise the temperature of water due to hydrogen bonds in liquid water restricting movement of individual molecules
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What does water having a high latent heat mean?
A lot of energy is required to change liquid water to gaseous water.
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What is less dense, liquid water or solid water?
Water as a solid is less dense than liquid water so it floats, therefore ice forms an insulating layer, allowing organisms to survive beneath it.
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Why is water transparent?
It allows light to pass through and enables aquatic plants to photosynthesise.
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What allows chemical reactions to take place?
Water being a solvent, it attracts other charged particles such as ions and other polar molecules such as glucose. Water acts as a transport medium as these chemicals dissolve in water.
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Why can insects support their whole body mass on water?
It's because water has the highest surface tension and it's so strong that an insect can support its whole body mass on the surface of water and not fall through.
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Other cards in this set

Card 2

Front

What's the charge of water?

Back

Water has no charge.

Card 3

Front

What happens when the hydrogen and oxygen portions interact?

Back

Preview of the front of card 3

Card 4

Front

What does water having a high specific heat mean?

Back

Preview of the front of card 4

Card 5

Front

What does water having a high latent heat mean?

Back

Preview of the front of card 5
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