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AKS 6 Solutions TEST
solutions, acids, bases, concentration, conductivity
| Question | Answer |
|---|---|
| What is a solution? | a homogeneous mixture of two or more substances |
| How does the concentration of a solution change? | The concentration of a solution can change if volume or the solute changes, ie. concentration increases if volume decreases or concentration decreases if volume increase |
| Why is pure water not a conductor of electricity? | Pure water has no available ions; until a solute is dissolved in the water, no ions are produced |
| What factors affect the dissolving rate? | surface area (cubed vs. crushed) temperature stirring (agitation) |
| What is solubility? | The amount of solute that can dissolve in a given amount of solvent at a given temperature |
| How is the solubility of solids different from the solubility of gases? | The solubility of solids increases at higher temperatures; the solubility of gases increases at lower temperatures (decreases at higher temperatures) |
| What determines the solubility of solution on a solubility curve? | The point of saturation |
| Distinguish between saturated, unsaturated and supersaturated. | Saturated=cannot dissolve more "ENOUGH" (on the line of solubility curve graph) Unsaturated=can dissolve more "NOT ENOUGH" (under the line) Supersaturated =too much has been dissolved "MORE THAN ENOUGH" (above the line) |
| Which factor directly affects the solubility of solids and gases? | Temperature |
| How does a solubility curve look for an increase in solubility with an increase in temperature of a solution? | A positive slope for solids and liquids (gases have a negative slope) |
| What are the properties of an acid? | positive ions (H+) called hydronium , conducts electricity, reacts with metals, sour taste, pH<7 |
| What are the properties of a base? | negative ions (OH-) called hydroxide, conducts electricity, does not react with metals, bitter taste & slippery, pH >7 |
| What is the result of an acid reacting with base? | A neutral product, pH=7; the H+ ions from the acid and OH- ions from the base create a neutralized reaction |
| Which substance will cause litmus paper to turn red? | Acids |
Created by:
Y.Miller
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