Solution Day 1 Matter substances vs mixtures Solution

Solution Day 1

Matter- substances vs mixtures

Solution: How do we make? We need a solute and a solvent. Demo #1: What part was the solvent: solute: solution: Now describe the following in your own words: solvent: solute: solution:

Watch the video clip and in your own words describe saturated, supersaturated, and unsaturated.

HW: A review of Naming & Molecular Polarity Formula Ionic vs Covalent? Ionic ( Ca is a metal) Name Calcium Bromide Pb. O 2 Ionic ( Pb is a metal) Lead (IV) oxide CS 2 Covalent ( C is a nonmetal) Carbon disulfide Fe(OH)2 Ionic ( Fe is a metal) Cl. O 31 - Covalent ( Cl is a nonmetal) Chlorate Ga 2(SO 3)3 Ionic ( Ga is a metal) N 2 O 5 Covalent ( N is a nonmetal) Dinitrogen pentoxide Ca. Br 2 Iron (II) hydroxide Gallium Sulfite

HW: A review of Naming & Molecular Polarity H 2 O CH 4 N 2 CH 3 Cl

Likes Dissolve Likes Demo #2: Blue colored isopropyl alcohol (C 3 H 7 OH), Yellow colored water ( H 2 O), & Vegetable oil (C 6 H 5 O 6) are mixed together. Now, answer the following: 1. 2. 3. 4. 5. What happened when all three were added together? Explain why these observations make sense. What did the color change represent? Why is water considered to a universal solvent? Compare the terms Soluble and Insoluble.

Likes Dissolve Likes Conclusion to demo: Water is polar or nonpolar Isopropyl alcohol is polar or nonpolar Vegetable oil is polar or nonpolar

Look at the image below, what word would you use to describe: miscible or immiscible.

� Look at the image below, what word would you use to describe: miscible or immiscible.

E. C. Explain how soap can “clean” ( dissolve) oils but it can also dissolve in water to make soapy water.

Molarity Formula: moles of solute Liter of solution *** remember if your solute is given/measured in grams you can convert to moles by using molar mass ( unit 5)

Molarity Unit(s) : moles/L or molar or M (which stands for molar) or [value in brackets] ex: 3 moles/L or 3 molar or 3 M or [3]

Molarity Vocab; Concentrated: a lot of solute per solvent Dilute: small amount of solute per solvent Think of the following scenario: Your making chicken & stars soup, you dump the can into a bowl (this is concentrated) and then you add water (making it more dilute).

Examples 1. A saline solution contains 0. 90 g Na. Cl in exactly 100 m. L of solution. What is the molarity of the solution? 2. How many moles of solute are present in 1. 5 L of 0. 24 M Na 2 SO 4?