Our objective for the Sherlock Holmes Experiment was to illustrate that some chemicals can be identified or differentiated by simple chemical tests‚ such as solubility‚ pH‚ or color tests. In our group we had to test come common powders such as Alka-Seltzer‚ baking soda‚ flour‚ Vitamin C (ascorbic acid)‚ and salt. Other chemicals that were used to do this experiment were vinegar‚ and Iodine 2 Solution. The equipment used to do this experiment was red litmus paper‚ and 5 test tubes per group. After
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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 your
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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 the
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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 make both parts weight as close as possible. 3. One person set the timer while the other person put half of the tablet into the film canister
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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)" (Senese
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Place about 10mL of distilled water into the wide mouth square bottle. Into the cap place about 1/4 to 1/3 of an Alka Seltzer tablet. 2. Place both the bottle with water and the cap containing the Alka Seltzeron the beam balance and read and record the initial total mass. 3. Remove the bottle and cap with Alka Seltzer from the beam balance. Drop the Alka Seltzer into the bottle and quickly place the cap on
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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 experiments
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The purpose of this experiment was to find how certain factors of a chemical reaction affect the rate of reaction. This experiment focused on how temperature affects the rate of reaction for the reaction of alka-seltzer and water. The rate of a reaction is a value calculated to figure out how fast a chemical reaction occurs. There are three factors that can be changed that will affect the rate of a chemical reaction: surface area‚ concentration‚ and temperature. Temperature specifically affects
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The reaction that 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 bicarbonate ions in the tablet react with the hydrogen ions from the acids that are also contained in the
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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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