Water Analysis Part 3 Flashcards
What is involved in the polarity of water?
Electrostatic forces
Which element of water is positive and which element is negative?
Hydrogen is positive and oxygen is negative
What would a lower surface tension of an object result in?
Increased wetting
What would a higher surface tension of an object result in?
Decreased wetting
What are molecules in a droplet of liquid attracted to each other by?
Intermolecular bonds
What are hydrophilic surfaces?
Surfaces which are wet by water
What are hydrophobic surfaces?
Surfaces which are not wet by water
What is the order of surface tension between oil, water and detergent?
Highest- Water, oil, detergent- Lowest
What are the physical properties of water?
Transparent, colourless and odourless
What does a water molecule consist of?
Two hydrogen atoms attached to one oxygen atom
What can water be found as?
Solid, liquid or gas, the only natural substance to exist in all 3 states
In chemical terms, what is the water molecule?
Strongly dipolar
What temperature does pure water freeze at?
0°C
What does water vapour in the atmosphere do?
Absorbs the suns harmful ultraviolet radiation
How much of the water molecule do oxygen atoms comprise in weight?
80%
