Chapter 15 - Water and Aqueous solutions Flashcards
What is chaotic movement of colloidal particles?
Brownain motion
What are dissolved particles?
solute
What are water samples containing dissolved substances?
Aqueous Solution
What is the dissolving medium?
solvent
What is another name for a homogeneous mixture?
solution
What is a wetting agent such as soap or detergents?
surfactant
What occurs when a solute dissolves?
solvation
What are compounds that conduct electricity in aqueous solutions or the molten state?
Electrolyte
What are mixtures containing particles that are intermediate in size between those of suspensions and true solutions?
Colloid
What are compounds that do not conduct electricity in aqueous solutions or the molten state?
non electrolyte
Are detergents used in washing machines because the reduce the surface tension of water?
YES
Is the general rule - - likes dissolves likes?
YES
Are electrolytes compounds that do not conduct electricity in aqueous solutions?
NO
Do most polar and ionic solutes dissolve in water?
YES
Is a hydrate a compound that includes a specific number of oxygen molecules bound to each formula unit?
NO
Are emulsifying agents essential for forming and maintaining emulsions?
YES
Why does ice float on water?
Its density is lower than that of the water
What is the water considered when salt is dissolved in water?
solvent
What is is the scattering of visible light know as as it passes through a colloid?
tyndal effect
What is surface tension?
The inward force that tends to minimize the surface area of a liquid
What is the typical particle size of suspensions?
1000 nanometers
Why do we have large bodies of water?
Low vapor pressure
At what temperature does the density of ice change?
4* C
How is Gelatin best classed?
a colloidal dispersion
What is the high surface tension of water due to?
hydrogen bonding between water molecules
Why is the density of ice less than the density of water?
hydrogen bonding in ice produces an open framwork
What is an example of a solution?
salt water
What are the colligative properties of a solution?
1, high solubility
- cannot be filtered
- milky or cloudy in appearance
Be able to draw and label a water molecule
See your notes
Explain what the phrase - - “Like dissolves Like” means.
Compounds that are similar to each other have a better chance of dissolving within each other
Draw and explain how solvation occurs.
See your notes
Know the percentage chart of water on Earth.
See your notes
