Water Properties Flashcards
Why are water molecules considered as polar molecules?
They have an uneven distribution of charges, with the oxygen being slightly positive and the hydrogen being slightly negative
Why is water a solvent?
It dissolves charged molecules and polar molecules by bonding with the negative ions going to the positive hydrogen and the positive ions going to the negatively charged oxygen.
What is the bond between water molecules called, is it strong and what is the attraction between water molecules called?
Hydrogen bonds which are weak but collectively make water strong.
Cohesion
What is specific heat capacity and is it high or low for water? How does it influence the environment?
The energy it takes for the temp. of water to increase by 1 degrees. It is high for water meaning that natural life in ponds and rivers don’t die.
What is high latent heat of vapourisation and is it high or low for water? How does it influence the environment?
The energy it takes for water to change from liquid to gas. It is high for water meaning that natural life in ponds and rivers don’t die and in animals they can sweat.
How would you draw and label two bonded water molecules?
2 positive hydrogens, 1 negative oxygen bonded by a hydrogen bond.
Is water or ice less dense? What does that mean it can do? How does it help the environment?
Ice is less dense so it floats above water. It creates an insulating layer for aquatic creatures and plants
What colour is water? How does it benefit the environment?
It is colourless so light can pass through it and plants underwater can photosynthesis.
What is cohesion and adhesion?
Cohesion is the attraction of water molecules and adhesion is the attraction of water molecules to other substances.
Why is water considered a metabolite?
It breaks down substances in reactions
