| Mixtures |
| #1 |
A combination of two of more substances that are NOT chemically combined is a(n) |
mixture |
| #2 |
Mixtures are separated through __________ changes. |
physical |
| #3 |
When two or more materials combine chemically they form a(n) ___________. |
compound |
| #4 |
All solutions are __________, but not all of these are solutions. |
mixtures |
| #5 |
List three methods to physically separate a mixture. |
Evaporation, filtering, magnet, distillation, or centrifuge |
| Solutions |
| #1 |
Which of the following is NOT true of solutions? a. The contain a dissolved substance called a solute. b. They are composed of two or more evenly distributed substances. c. They appear to be more than one substance |
C. They appear to be more than one substance. |
| #2 |
In a solution, the ________ is the substance that is dissolved. |
solute |
| #3 |
In a solution, the _______ is the substance in which it is dissolved. |
solvent |
| #4 |
When two gases or two liquids form a solution, the substance that is present in the largest amount is the __________. |
solvent |
| #5 |
Salt is ______ in water because it dissolves in water. |
soluble |
| Concentration of Solutions |
| #1 |
A measure of the amount of solute dissolved in a solvent is called ____________. |
concentration |
| #2 |
The ability of a solute to dissolve in a solvent at a certain temperature and pressure is called ___________. |
solubility |
| #3 |
In our Dominade/Sodium Chloride experiment, which cup(s) had the highest concentration? |
cup 8 because all four scoops of Dominade dissolved in 10 drops of water. |
| #4 |
Solubility of solids in liquids tends to __________ with an increase in temperature. |
increase |
| #5 |
In our Dominade/Sodium Chloride experiment, which cup(s) had the lowest concentration? |
cups 1 and 4 because 1 scoop of each solute dissolved in 10 drops of water. |
