1. RHS SCIENCE TAKS REVIEW PROPERTIESOFMATTER Part 3

2. Solutions * Is a homogeneous mixture Solution Solvation * Is the process of dissolving

3. Solutions Solvation

4. The neg.end of water mc will attract the sodium ion; the positive end of water will attract the chloride ion. Solutions

5. * Substance that does the dissolving * Water is the universal solvent * Usually present in greater amount Solvent Solute * The substance that is dissolved

6. 1. Identify the solvent 2. Identify the solute Check For Understanding 5 g of sugar are added to 100 mL of hot coffee. Coffee Sugar

7. Solutions Temperature * Temperature Increasing temperature usually increases solubility Molecule size * Molecule size Larger, heavier mc are less soluble Polarity * Polarity Like dissolves like Factors Affecting Solvation

8. Pressure * Pressure The greater the pressure the greater the solubility of a gas in a liquid Factors Affecting Solvation

9. How many grams of NH 4 Cl can be dissolved at 40 o C? Examine the graph... 50 g

10. For which compound does solubility decrease as temp. increases Examine the graph... NaCl

11. Degrees of Solubility Saturated * Contains maximum amount of solute possible at that T Unsaturated * Capable of holding more solute Super saturated * Contains more solute than it should be able to hold at the given temperature

12. Examine the picture. Solution A is supersaturated. B and C are the same solution after adding additional solute

13. Solutions Electrolyte solutions * Contain dissolved ions * Conduct electricity

14. Solutions Nonelectrolyte solutions * Donot contain ions * Donot conduct electricity

15. Check For Understanding Explain why tap water can conduct electricity while distilled water does not Tap water contains dissolved ions; distilled water does not.