Because it lowers the boiling point of the water so I can add the pasta sooner.
Because it raises the boiling point of the water, so that it will be hotter when it boils and the pasta will cook faster.
Only because it tastes good. There is no effect on the way it cooks.
Solids > liquids > gas
liquid > gas > solid
liquid > solid > gas
gas > liquid > solid
Metallic solids tend to have low melting and boiling points.
The attractive forces are low between the atoms, ions, or molecules of a solid.
A crystalline solid has an ordered structure, while an amorphous solid has no ordered arrangement.
A gas changes to a liquid
A solid changes to a liquid
A liquid changes to a gas
Hot air rising
Water vapour condensing
Evaporation is a change that can be reversed
Evaporation only happens at 100°C
Evaporation is helped by heat and by wind
The water cycle
The Sun evaporates water on the Earth's surface into water vapour
The water vapour rises, and cools and condenses into clouds
When it rains, the clouds melt
Here's an interesting quiz for you.