3. Place a dot of ink near the bottom of each strip. Use a pencil to identify which strip belongs to which pen. 4. Poke a pencil through one of the loops you just made.
4. Place the aluminum foil packet of crayon “sediment” between the two boards. Then hammer on the top board to flatten the crayon shavings. 5. Open the foil packet and examine your crayon “sediment”.
The bottom of the test tube contains sodium hydroxide pellets to absorb any carbon dioxide emitted by the seeds. A loose cotton plug separates the seeds from the caustic
Paper: white, red, blue, and black construction paper b. Scissors c. scotch tape d. ruler e. thermometer f. stopwatch 2. Measure construction paper to the size 5”x 8” 3. Cut paper to that size 4. Now fold each paper in half. 5.
Gather paper towels, Petri dish, Control dish, blue and green non toxic markers, a timer, and pencil and paper. 3. Colored two paper towels one green the other blue and one was left as original color. (cut paper towels to the size control dish.) 4.
Drop a very small amount of iodine on a piece of paper and observe what happens to the paper. (Paper has lots of starch in it) The Iodine turned black on the paper. Supplies Needed: -plastic baggie/cheap works well -water (tap is fine—or bottled) -iodine (use caution if you are allergic to iodine/betadine) -cornstarch -measuring cup -about a 2 cup size cup/beaker/bowl—clear would be great Procedure: Fill a plastic baggie with a teaspoon of corn starch and a half a cup of water tie bag. Fill a cup (about a two-cup size)halfway with water and add ten drops of iodine. Place the baggie in the cup so that the cornstarch mixture is submerged in the iodine water mixture.
Make a bee stinger by cutting about an inch of grey pipe cleaner, and poking it into the foam at the back end of the bee. Careful you don’t get stung! Cut about a half an inch off of the end of the foam. Pinch the tip of the foam
Introduction Caffeine is a molecule that is similar to the purine base xanthine. The only recognizable difference is that caffeine has a methyl group. The goal of this experiment is to isolate caffeine from tea leaves, and then purify it by using sublimation. This experiment will use three techniques, extraction, recrystallization and melting point determination. A sequence of extractions has to be done to take out the other components from tea.
Title: Separation of a Mixture of Solids Purpose: To learn about separating solids and how this happens. By separating the solids one will be able to tell the difference between a mixture and a pure substance. Procedure: Four main steps. Separating the iron from the mixture with a magnet. Separate the sand by boiling water and pouring the water off, then move on to separating the Benzoic acid using filter paper.
Next, get 2.00 grams of MgSO4 and combine it with the paste. Place pieces of wool into the neck of a funnel and place the funnel over a beaker. Mix 15 mL of 50/50% into the beaker, stirring to get a liquid from the paste. Then, pour just the liquid into the funnel to filter it out. Do this one more time the exact same, and then a third time using only 10 mL of the mixture.