CATEGORY 1
What is water?
A substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states.
What happens if water changes phase?
The liquid water is changing to gaseous water, or steam.
How do we determine the solubility of liquids in water?
Determined by inter-molecular interactions
How is a water molecule built up?
A water molecule consists of three atoms; an oxygen atom and two hydrogen atoms.
How does water evaporate?
When a liquid substance becomes a gas
What are thermal properties of water?
It takes a lot of energy to heat it.
How are water molecules bond together?
Hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules.
Why does ice float on water?
because wherever water freezes it is less dense
What is the unique attractive forces that keep water molecules together?
How much does a water molecule weigh?
18.01528 grams per mole
How come not all substances are water-soluble?
They are non-polar and do not interact well with water molecules.
What are physical and chemical properties of water?
Physical- color, temperature,
Chemical- The chemical formula of a molecule of water is H2O
In what states can water be found?
Solid, liquid and gas
How do we determine the solubility of gasses in water?
Experiments and using equation of state
Where can water be found?
Above the Earth in the air and clouds