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Whimsical Wednesday

T ake out homework (don’t TURN in YET! KEEP at your desk!) Answer the Catalyst below: 1. How would you separate a mixture of alcohol and water if: Boiling Point of Alcohol is 77 degrees Celsius Boiling Point of Water is 100 degrees Celsius 2. Name 2 heterogeneous mixtures. Whimsical Wednesday.

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Whimsical Wednesday

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  1. Take out homework (don’t TURN in YET! KEEP at your desk!)Answer the Catalyst below:1. How would you separate a mixture of alcohol and water if:Boiling Point of Alcohol is 77 degrees CelsiusBoiling Point of Water is 100 degrees Celsius2. Name 2 heterogeneous mixtures Whimsical Wednesday

  2. BIG GOAL: Class average of 80% Mastery on all Tests and Quizzes!

  3. ExplosionPractice!

  4. Explosion: Rapid fire questions! What day is today? What is the scientific method? What is the first step to the scientific method? What is an experimental problem? What is a hypothesis? What is the Passaic mascot? What is a Pure Substance? What are the 2 types of Pure Substances? Name 3 elements. Name 2 Compounds. What is a Mixture? What are the 2 types of Mixtures? What is a homogeneous Mixture Give 1 example of a Homogeneous Mixture. Give 1 example of a Heterogeneous Mixture. What is the Law of Conservation of Mass? What is 9x8? What is 7x11? What is 6x12? What is 12 x 12? What is the square root of 81? What is the square root of 169? Spell Chemistry.

  5. Exemplary Lab Report Introduction!

  6. Introduction:Alka Seltzer is commonly used by many people as a way to relieve pain, mostly dealing with issues in the stomach. The drug was developed by Maurice Treneer was specifically marketed for relief of minor aches, pains, inflammation, fever, headache, heartburn, sour stomach, indigestion, hangovers, and neutralize excess stomach acid. Alka-Seltzer was launched in 1931 and it is owned by Bayer Schering Pharma. When doing the experiment with AlkaSeltzer and water, it was observed that it quickly dissolved and rose to the top. The experimental question “How long does it take Alka-Seltzer react in different types of liquids?” was developed and tested. It was hypothesized that Alka-Seltzer would dissolve quicker in alcohol. Overall the goal in this experiment was to see how Alka-Seltzer would dissolve and how long it took in different liquids because it was dissolving moderately fast in water. Background information Prior observations Experimental question! Stated Hypothesis Stated purpose

  7. Exemplary Lab Report Materials and Procedure!

  8. Materials: - 100 mL Sprite- 100 mL Water- 100 mL isopropyl alcohol- 100 mL Apple Juice- 4 one-half tablets of Alka Seltzer- 1 250 mL beaker- 1 timer Quantitative amounts! Quantitative amounts! Procedure:Step 1: bring all materials to group work spaceStep 2: Pour 100 mL of water into the 250 mL beaker Step 3: Drop 1 one-half Alka-Seltzer tablet into the beaker and begin the timer when the tablet hits the water Step 4: Stop the time once the tablet has completely dissolved (bubbles may still be present but tablet is gone). Step 5: Record Data and observations Step 6: Rinse beaker with water and dry with paper towel Step 7: Repeat Steps 2-6 with Sprite, Isopropyl Alcohol, and then Apple Juice (all in separate tests) Specific Actions! Refers to previous steps

  9. Exemplary Lab Report Conclusion!

  10. Restated the Purpose Conclusion:This lab was performed in order to determine the reaction time of Alka-Seltzer to different liquids. Figure 1 shows that the fastest reaction time was in water at 24.31 seconds. The results are not close to the hypothesis in which it was stated that alcohol would have the fastest reaction time. Alcohol actually had the longest reaction time. It took so long, that it was impossible to get an exact reaction time. Although the experiment appeared accurate, there may have been errors. Referred to Figures and added quantitative values Restated hypothesis and said if it was correct or incorrect

  11. Many things went wrong such as; non-accurate timing, and mixed liquids. Timing was not accurate based on slow response to when the tablets were placed in the beaker. Impurities in the beaker may include mixed chemicals due to dirty glassware. This cold be improved by having a person with faster reflexes time the reaction. Also, having someone that is more careful clean out the glassware. Pointed out possible errors Recommen-dations Overall: was to the point and easy to read. No fluff! And… It’s in 3rd PERSON!

  12. States of Matter

  13. SOLID • Hold their own shape • Particles are packed together • Particles vibrate in place • Fixed Volume

  14. SOLID • Take the shape of the container • Pourable • Particles Slide past each other • Fixed Volume

  15. GAS • Expands to fill the container • Particles have HIGH energy • Takes the SHAPE of the container

  16. Energy INCREASES as you go from solid  liquid  gas That’s why we heat it up! To increase the energy of the sample! Energy Increases!

  17. Changes in States of Matter

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