Answer:
c solutions (a) larger than 1000 nm
a suspensions (b) 1 nm to 1000 nm
b colloids (c) smaller than 1 nm
2. A certain mixture has the following properties:
No solid settles out during a 48-hour period.
The path of a flashlight beam is easily seen through the mixture.
It appears to be homogeneous under a hand lens but not under microscope.
Is the mixture a suspension, colloid, or true solution?
3. Define electrolyte
A substance that conducts electricity when dissolved
4. The following are statements about the dissolving process. Explain each one at the molecular level.
a. Increasing the pressure of a solute gas above a liquid solution increases the solubility of the gas in the liquid.
Makes it difficult for the gas particles to escape attractions to liquid particles. Pressure acts like a lid.
b. Increasing the temperature of water speeds up the rate at which many solids dissolve in this solvent.
Water particles move faster and have more collisions with the solute, increasing the rate of dissolving
Explanation: