Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
Classify the following as either suspensions, colloids, or solutions...
Sand mixed with water. |
Sand mixed with water is a suspension because sand will eventually settle to the bottom. The molecules of the sand do not become evenly distributed among the water.
|
|
Classify the following as either suspensions, colloids, or solutions...
Brass Doorknob |
A brass doorknob is a solution because it does not seperate on standing, nor by filtration.
|
|
Classify the following as either suspensions, colloids, or solutions...
An Atmospheric Cloud |
An atmospheric cloud is a colloid because it has disperesed particles and scatters light (Tyndall Effect).
|
|
Classify the following as either a heterogeneous or Homogeneous mixture...
Orange Juice |
Orange Juice is a heterogeneous micture because the pulp and what not in the orange juice will eventually settle to the bottom. It doesnt all become one substance.
|
|
Classify the following as either a heterogeneous or Homogeneous mixture...
Tap Water |
Tap water is a homogeneous mixture because it is all one solution without any other visible different parts that will settle if left alone for a while.
|
|
What are the properties of a...
Solution? |
Homogeneous
0.01 - 1 nm solute particles:atoms, ions molecules Does not seperate on standing Cannot be seperated by filtration No light scattering |
|
What are the properties of a...
Colloids |
Heterogeneous
1-1000 nm dispersed particles: particles or large molecules Does not seperate on standing Cannot be seperated by filtration Scatters light (Tyndall Effect) |
|
What are the properties of a...
Suspensions |
Heterogeneous
Over 1000 nm suspended particles: large particles or aggregates Particles settle out Can be seperated by filtration May scatter light, but not transparent. |
|
What is an...
Alloy? |
Alloys are mixtures or solutions in which the atoms of two or more elements (usually metals) are uniformly mixed.
|
|
What is a...
Solution |
A solution is a homogeneous mixture of two or more substances in a single phase.
|
|
What is a...
Solvent |
The dissolving medium in a solution is called the solvent.
|
|
What is a...
Solute |
The substance dissolved in a solution is called the solute.
|
|
What is an...
Electrolyte |
A substance that dissolves in water to give a solution that conducts electric current is called an electrolyte.
|
|
What is a...
Nonelectrolyte |
A substance that dissolves in water to give a solution that does not conduct an electric current is caled a nonelectrobyute
|