Bearly alive Solution Concentration Chem Catalyst Which solution

Bearly alive Solution Concentration

Chem Catalyst • Which solution do you think has the greatest amount of sugar in it? Explain your reasoning. • What do you think caused the bears to change size? (Hint - think about the eggs in Biology last year)

What do you remember about the following terms? • Solution: • Solute: • Solvent:

What do you remember about the following terms? • Solution: A mixture of two substances that is uniform at the ion/molecular level • Solute: The substance that gets dissolved (e. g. sugar or salt) • Solvent: The substance that dissolves the solute (e. g. water or alcohol)

Lab Prep • Purpose: To determine how much sugar vs salt will dissolve in 100 ml of water. • Tape in the procedure and table • Safety: Glassware • But before you go to the lab…

Homework • Lesson 13 - Bearly Alive • Questions 1 -10 • Due tomorrow • Tonight at 9: 00 on PBS (ch 9): NOVA: Venom (a toxin in solution) • What is the relationship between doing home work practice and test success? • Signed progress report due tomorrow.

Complete the Calculations and Analysis • (Paper on front demo station)

Solutions • Solution Concentration: The amount of solute dissolved in a specific volume of solution. • Molarity: The concentration of a solution expressed in moles of solute per liter of solution. Symbol = M.

Saturation • Saturated Solution: A solution that contains the maximum amount of solute in a solvent at that temperature. • Unsaturated Solution: A solution in which more solute can be dissolved at that temperature. • Supersaturated Solution: A solution that contains more solute than the solution can hold at that temperature.

Demonstration • Given what we’ve learned in this lab, how can you explain the demonstration?

Check-In • Suppose 10. 0 g of salt, Na. Cl, is dissolved in 0. 50 L of water. What is the molarity of this solution?