careful not to let the Alka-Seltzer tablet get wet before the bottle is closed by wiping the lip of the bottle and the cap so it remains dry‚ or risk gas escaping into the air and not being captured by the bottle. Also‚ the group must be sure to close the bottle tightly with the cap‚ because gas may escape this way as well. During this investigation‚ it was determined that there is 0 change in mass when a gas is produced‚ because the mass of the bottle‚ water‚ Alka-Seltzer tablet‚ and cap remained
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06.05 Rate and Collision Theory: Assessment Instructions Investigation of the Rate of a Reaction Background: The reaction you will be investigating is the reaction that occurs when an Alka-Seltzer tablet is placed into a given amount of water. Alka-Seltzer is an over-the-counter antacid and pain relief medication that is dissolved in water before it is ingested. Each tablet contains aspirin (acetylsalicylic acid)‚ citric acid‚ and sodium bicarbonate. As the tablet dissolves in water‚ the
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changes. Materials: * * Hot plate * Water * Salt * Evaporating dish * Candle * Matches * Ammonium hydroxide * Watch glass * Phenolphthalein * Paper towel * Cornstarch * Iodine * Cup * Alka-Seltzer tablet * Pipet * Milk * Vinegar * Copper II sulfate * Lead II nitrate Safety: * Goggles were worn. * Aprons were worn. * Lab station was cleaned up directly following experiments. * Hands were washed after
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different temperatures would change the reaction rates we had three flasks all containing varying temperatures of water(H20). One with cold water (4°C)‚ one room temperature (21°C)‚ and one with hot water (44°C). In each flask‚ we dropped one tablet of Alka-Seltzer‚ all within 0.008 grams of each other‚ into the three separate beakers and the duration until the tablet dissolved. The results showed a large change in the average reaction rate between the different temperatures. The cold water took 256.91 seconds
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questions with your team. Use your knowledge from Middle School! Materials Clean‚ plastic water bottle Vegetable oil Food coloring Alka-Seltzer package A funnel Water Procedure 1. 1) Add 100 ml of tap water to the bottle. 2. 2) Add 100 ml of vegetable oil to the bottle. 3. 3) Add a maximum of 3 drops of food coloring to the bottle. 4. 4) Add 2 alka seltzer tablets and observe. 5. 5) Say ‘ Wow‚ that is so cool!’. ‘I love Science!’ Questions Define the following terms and use them in
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base react to form water and salt. To illustrate‚ H+ hydrogen ions from the acid react with the hydroxide ions OH- from the base. Antacids are taken to relieve heartburn or indigestion caused by excess stomach acid. For instance‚ antacids such as alka-seltzers contain baking soda which is highly reactive with acids‚ settling the discomfort of indigestion. During the lab we used vinegar and various antacids to test what was most effective and why. The brands consisted of name brand and generic‚each type
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solution that allows resistance to significant change in pH when small amounts of strong acids or base are added to it. (Boundless‚ 2015) This is usually formed when a weak acid is added to a salt of its conjugate base. (Chemicool.com‚ 2014) When an Alka Seltzer tablet is dissolved in water‚ a buffer is formed when the weak acid citric acid is present with sodium citrate (citrate ion) the conjugate base (Buffer Balancing Acts Buffers‚ 2009) "Na3C3H5O7 (aq) + 3 HCl (aq) H3C3H5O7 (aq) + 3 NaCl (aq)"
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are several supplies that are needed to make this lava lamp. 1. You will need Water. 2. The second item is a clear plastic bottle. 3. The third item is vegetable oil. 4. The fourth item is food coloring of your choice. 5. The fifth item is Alka-Seltzer tablets. Transition: Now that we’ve collected all the materials we can begin on our steps. 1. Pour water into the plastic bottle until it is around one quarter full (you might want to use a funnel when filling the bottle so you don’t spill anything)
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time to see the difference between the rates of reactions speed. Materials: - 1 graduated cylinder - 1 film canister - Vinegar - Water - Phone (as timer) - 2 Alka-Seltzer tablets - Electronic scale Procedure: 1. Fill the graduated cylinder with 10ml of vinegar and put it in the clean film canister. 2. Break the Alka-Seltzer tablets to two parts from the middle‚ measure both parts on the electronic scale (half tablet is 1.5g) and break little pieces from the bigger half if necessary‚ to
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MT-11 02/20/15 Investigatory Project in Chemistry How Green Algae Can Be One of the Best Ways to Help Reduce CO2 Concentration in the Atmosphere Members: Urrutia‚ Maria Veronica S. Sevilla‚ Ruth Consuegra‚ Donita Reloj‚ Mary Roschael Dela Cruz‚ Samantha Claire Introduction Some hope fertilizing tiny‚ floating plants in the ocean‚ prompting them to suck carbon dioxide out of the air
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