Water

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Describe the structure of water
Hydrogen and Oxygen, polar molecule, hydrogen slightly + and oxygen slightly - , hydrogen bonds for because of this (weak bonds) which break and reform all the time
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What are the characteristics of water, in relation to structure?
High boiling point (hydrogen bonds), less dense as a solid (hydrogen bonds hold molecules apart), cohesive- molecules are attracted to each other (H bonds), adhesive- attracted to other molecules (H bonds)
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What is surface tension?
The water molecules are more attracted to each other (cohesive) than the air, this creates surface tension, making it harder to split apart the molecules.
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Why is water a good transport medium?
Polar so acts as a solvent, adhesive and cohesive forces in water exhibits a capillary action
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Why is it good that water has a high boiling point and a high heat capacity?
Our bodies are made of a large amount of water, it keeps our bodies at an optimum temperature so that our enzymes can work and so it acts as a temperature buffer
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Give an advantage of ice being less dense than water
Ice floats on water so it provides an insulating layer for aquatic animals
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Other cards in this set

Card 2

Front

What are the characteristics of water, in relation to structure?

Back

High boiling point (hydrogen bonds), less dense as a solid (hydrogen bonds hold molecules apart), cohesive- molecules are attracted to each other (H bonds), adhesive- attracted to other molecules (H bonds)

Card 3

Front

What is surface tension?

Back

Preview of the front of card 3

Card 4

Front

Why is water a good transport medium?

Back

Preview of the front of card 4

Card 5

Front

Why is it good that water has a high boiling point and a high heat capacity?

Back

Preview of the front of card 5
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