3.2Water Flashcards
Polar molecule?
Electrons are not equally shared between the atoms and there becomes regions of slightly positive and slightly negative atoms
Hydroxyl groups in water
Oxygen and hydrogen bond
Polar molecule as oxygen has the greater share of electrons
Water contains 2 hydroxyl groups
Hydrogen bonds
Polar molecules interact with each other as the positive and negative regions attract and form bonds
Weak interactions that break and reform
Occurs in high number
Why does it have a High boiling point
Due to its hydrogen bonds and it takes a lot of energy to break these bonds
What happens to water when it becomes solid (ice)
It becomes less dense due to the hydrogen bonds fixing the the polar molecules further apart than average distance
What’s the structure of water when it becomes a solid
A giant rigid open structure
Tetrahedral arranges of H atoms
How is it cohesive
Molecules are attracted to one another so move as one mass
How can it act as a coolant
Due to hydrogen bonds it needs a lot of energy to change its temperature
Why is it a good solvent
It’s polar molecules
What is it effiecnt at
Being an effiecnt transport medium
Molecules will stick together due to cohesion
What is capillary action and why does water exhibit it
Waters adhesive and cohesive effects results in it
It’s the process by which water can rise up a narrow tube against the force of gravity
