| A | B |
|---|
| What is the difference between a mixture and a solution? | In a solution the solute dissolves into the solvent, in a mixture it does not. |
| How can you tell if a chemical reaction has taken place? | Something new is produced such as a gas (fizzing), a precipitate, heat, cold. You have something that you didn't have before. |
| How do you dilute a solution? | Add water (solvent) |
| Name all of the solutes and solvents we have used in this unit. | Solutes - gravel, powder, Kool Aide, salt, citric acid, baking soda, calcium chloride. Solvents - water |
| If you had a saturated solution, how could you unsaturate it? | Add water |
| How can you separate a solution? | Evaporation |
| Name three ways you can separate a mixture. | Screen filter, paper filter, evaporation. |
| If you had a mixture of citric acid, gravel, and water, how could you separate it? | You could use a screen or paper filter to separate the gravel and then allow the water to evaporate. |
| If you were given a cup with three different concentrations, how could you determine which is more concentrated? | There are 2 ways - 1) put the same volume of each solution in each cup (50 ml for example). Use a balance to determine which is heaviest. Whichever is heavier is more concentrated. 2) Take the same volume of each. Using blocks weigh each solution. The one that is heaviest is the most concentrated. |
| Name four things that you learned from any experiment. | SOME EXAMPLES - the difference between a mixture and a solution, how to separate a mixture, how to separate a solution, how to dilute a solution, how to saturate a solution, how to determine how much solute it takes to saturate a solution, etc. |
