Entrance Question

1. Entrance Question Mark the following as heterogeneous or homogeneous • Salt water • Orange juice • Salad dressing • Brass • Air homogeneous heterogeneous heterogeneous homogeneous homogeneous

2. Solutions and Mixtures Ch 7

3. Vocab • Find in you book the following words and define them • Heterogeneous – • Immiscible - • Colloids - • Emulsions -

4. heterogeneous • Mixture with nonuniform blend of two or more substances • Example Granite Orange Juice Blood Smoke Paint Salad dressing

5. Immiscible • Two or more liquids that do not mix These particles are in suspension the particles can settle out and be seperated

6. Colloids • Mixture with small particles that can’t be filtered out • Fog • Smoke • Egg whites • Blood • Whipped cream • paint

7. Emulsions • When two immiscible liquids are combined • Mayonnaise • Drops of oil in vinegar and egg holds it together

8. What you need to know • Heterogeneous – define and be able to identify examples • Know that colloids and emulsions are types of heterogeneous mixtures

9. Find the following words and define • Homogeneous • Solution • Solvent • Solute • alloy

10. Homogeneous • Mixtures that are a uniform blend of substances • Fresh water • Salt water • Rubbing alcohol • Nail polish remover • Brass • Gasoline • Air • CO2 in pop

11. Solution Solvent Solute The thing being dissolved (salt, sugar, juice mix, etc) • The substance doing the dissolving (water typically)

12. alloy • Two or more metals mixed together • Zinc + copper = brass • Tin + copper = bronze • Mercury + silver = amalgam

13. What you need to know • Homogeneous – define and identify examples • What is the solvent and solute • Solutions can be gasses, liquids, or solids

14. Identify the solute when baking soda is dissolved in water. • Water • Baking Soda • The water baking soda mix • Colloids • I don’t know

15. What term means uniform (same) throughout • Equilibrium • Heterogeneous • Exothermic • Homogeneous • I don’t know

16. A mixture of two or more metals is called a(n) • Heterogeneous mixture • Alloy • Solution • Solvent • I don’t know

17. Granite is an example of • A heterogeneous mixture • An alloy • A homogeneous mixture • A solution • I don’t know

18. What type of heterozygous mixture has large particles that you could filter out easily • Suspensions • Colloids • Emulsions • Immiscible • I don’t know

19. What term means will not mix • Suspension • Heterogeneous • Immiscible • Emulsions • I don’t know

20. I would say that the sugar has dissolved, not disappeared. The sugar is now spread evenly throughout the drink, making it a homogeneous solution. To get the sugar back I could not filter it out, dissolved particles can not be filtered out no matter how fine of a filter is used. The only way to get the sugar back would be to evaporate the liquid. During evaporation, only the liquid water in the drink would evaporate, the sugar would be left behind as crystals on the glass. Write your answer on paper • A friend watches you stir a spoonful of sugar into a glass of clear lime drink. They say that sugar went away because it can not be seen anymore. How would you explain what happened to the sugar, and how could you show how you could get the sugar back. My answer looks like yours and is similar in length and detail, I have used scientifically appropriate words and fully understand the question My answer lacks supporting detail, I understand the question but did not answer in full detail, my answer is only half the length or less of yours. My answer is weak, I used one or two words and did not complete my answer with any facts or vocabulary Nope, didn’t get it, wrong idea, I am not on the right track.