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Make Magnetic Slime (Physics)

01:26

BeardedScienceGuy

Make Magnetic Slime (Physics)

This video shows you how to make Ferromagnetic slime from borax and PVA (Elmer's) glue. TRANSCRIPT: Bearded Science Guy here, and today I'm going to show you how to make magnetic slime. Start with half of a cup of Elmer's glue in a container. And then follow it up with half of a cup of warm water. Stir the solution until it's mixed with even consistency. Now take a full cup of warm water and add one teaspoon of Borax. Make sure to stir this until the Borax dissolves. Stir small amounts of this solution into the glue mixture until it thickens into slime. At this point, fold the slime 20-30 times until it's the same consistency throughout. It's time to mix in your magnetic powder. For this step, I used iron filings but many compounds containing iron, nickle, or cobalt have ferromagnetic properties. Once you've mixed your slime together, you can manipulate it using a neodymium magnet. Ceramic magnets will also work, but have a weaker magnetic field than neodymium. The slime will even appear to eat the neodymium magnet because of the iron filings interacting with the magnetic field. ➡️ Get the supplies here: http://www.beardedscienceguy.com/magnetic-slime-materials 1. Place 120 ml (½ cup) of PVA glue (Elmer’s School Glue) in a 500 ml container. 2. Add 120 ml (½ cup) of warm water to the same container. 3. Sir this solution until it is mixed to an even consistency and set this solution to the side to be used in a later step. This is solution number 1. 4. In a second 500 ml container add 240 ml (1 cup) of warm water. 5. Add 5 ml (1 tsp) of borax powder to the container and stir until the borax powder is completely dissolved. This is solution number 2. 6. Slowly add small amounts (10 drops at a time) of the borax mixture (solution 2) to the glue mixture (solution 1) until it thickens into slime. Make sure to continue stirring the glue mixture (solution 1) as you are adding the borax mixture (solution 2). Add about ten drops and then stir these drop into the mixture completely before adding ten more drops. Stop once the mixture has turned into a slime consistency. Note: If too much borax solution is added the slime will be very stiff and not very slimey, so make sure to add solution 2 slowly and be careful not to add too much. If you end up adding too much borax solution and your slime ends up being stiff and rigid make more glue and water solution and fold the slime in this solution until it loosens and becomes slimy (This can take anywhere from five minutes to two hours depending on how much borax solution was added so it is sometimes easier to start over if your slime is extremely hard and thick.) 7. Take your slime and fold it 20-30 times to make sure all the ingredients and mixed well. 8. Add 60 - 160 grams (2 Tbsp) of iron filings to the slime and mix it together by folding the slime 10-20 times. 9. Now you can use a neodymium magnet to manipulate the slime. The iron filings are attracted to the neodymium magnet and because they are mixed into the slime the entire blob can be manipulated via a strong magnetic field. Note: As you play with your slime water will evaporate and need to be replace by dipping the slime in warm water and then folding the water on the surface of the slime into the slime itself.

Make an Electric Motor (Physics)

01:43

BeardedScienceGuy

Make an Electric Motor (Physics)

Make your own simple electric motor with 20 gauge magnet wire, a D battery, a neodymium magnet, some clay, and a couple of paper clips. Get supplies here: https://www.beardedscienceguy.com/electric-motor-supplies TRANSCRIPT: Bearded Science Guy, here, and today I'm going to show you how to make a simple electric motor. Begin by wrapping 20 gauge magnet wire around a D battery, until you have about ten coils. Now take the ends of the wire and wrap them around the coil until they hold it securely in place. Make sure both wires are directly opposite of one another on the coil. With the coil stand vertically, sand the top half of the insulation off both wires. Now take two paperclips and bend them into long hooks with loops of wire at the end. After that, use electrical tape to secure the two paper clips to the D battery. Make sure that the loops of wire are about the same height off the battery. Now you're ready to put your electric motor together. Start with a base of either clay or play-dough. Place the D battery securely in the center with the loops of wire facing upward. Now place a neodymium magnet on the top of the D battery. Finally, you're ready for your coil of wire. The coil of water is an electromagnet and, when connected, it will begin to line up its magnetic fields with that of the neodymium magnet. However, since only half of the insulation was removed, as the electromagnet rotates, it turns off, gliding through the second half of the turn, only to repeat the process. If the insulation is removed from both sides of the wire, the electromagnet will turn to face the neodymium magnet, but then stop once both of the magnetic fields are lined up.

Fire Tornado (Physics)

02:09

BeardedScienceGuy

Fire Tornado (Physics)

In this science experiment you can do at home, we walk through how to make a fire tornado. Using isopropyl alcohol, a wire trashcan, a ceramic bowl, and a Lazy Susan, we see how air movement affects fire! To use this experiment for a science fair project, consider questions like: How fast does the air need to be moving to create a fire tornado? What is the impact of the wire trashcan on a fire tornado? Fire tornado experiment materials and procedures here: http://www.beardedscienceguy.com/how-to-make-a-fire-tornado 1. Place a sponge, cotton balls, or other absorptive material into a heat resistant container, such as a ceramic baking dish. 2. Pour isopropyl alcohol into the heat resistant container, enough to soak the absorptive material. 3. Place a wire trashcan into the middle of a Lazy Susan. 4. Place the container of isopropyl alcohol into the trashcan. 5. Using matches or a lighter, ignite the isopropyl alcohol inside the container. 6. Gently spin the Lazy Susan. Note: To smother the fire and extinguish the flames, place a heat resistant lid over top the container until the fire is put out.

Burning Money Experiment (Chemistry)

01:16

BeardedScienceGuy

Burning Money Experiment (Chemistry)

This experiment looks like we are burning money, but actually we are transferring heat energy from a chemical reaction to water molecules. The high specific heat of water allows it to absorb the heat energy from the combustion reaction protecting the hundred dollar bill from the flames.

Paper Rockets for Under Five Dollars (Physics)

06:17

BeardedScienceGuy

Paper Rockets for Under Five Dollars (Physics)

This video shows how you can make a paper rocket and a paper rocket launcher for less than five dollars worth of materials. These rockets are capable of traveling over 100 yards and because of this eye protection should be used. Building the Paper Rocket Step 1: Wrap a sheet of cardstock around a ½” pvc pipe. Make sure the cardstock tube can slide freely along the pipe and tape it in place. But sure not to wrap it too tight or the rocket won’t launch when the time comes. Step 2: Seal up one end of the card stock tube with several pieces of tape. Make sure this area is sealed well because the pressure from the rocket launch is place almost entirely on this tape seal. Step 3: Roll up another piece of cardstock into a cone shape and tape it in place. This will be the nosecone of your rocket. Place the cone on the sealed end to the rocket body and the cut the nose cone to the right size to fit on the front of the rocket body. Then tape this nose cone in place on top of the sealed end to the rocket body. Note: It is important that the rocket body is sealed with tape before attaching the nose cone because it will only be able to hold a fraction of the pressure if the nose cone if the only thing sealing the end of the paper rocket. Step 4: Design and cut out three to four tail fins from card stock paper. Keep in mind that the larger the tail fin the more drag (air resistance) will be created. Now line them up at the base of the rocket and tape them to the body so that they stand perpendicular to the surface of the rocket body. Note: If all of the tail fins are slightly angled in the same direction the rocket will spin adding stability but be careful because too much spin will create excessive drag (air resistance) slowing the rocket. Building the Rocket Launcher Step 1: Start by building the base to your launcher. This can be made of many different materials but I chose to make my base with three one foot sections of ½” PVC pipe. Tape these three pipes together into a triangle shape. Step 2: Insert a one foot section of ½” PVC pipe into the opening of a two liter bottle. It will be a nearly perfect fit as long as it is the standard ½” opening. Use electrical tape to make sure that the PVC pipe is attached to the bottle and stays in place when the rocket is launched. Step 3: Attach two ½” 90 degree PVC threaded elbows to create an adjustable launch angle. Use electrical tape to secure them to the other end of the pipe connected to the 2-liter bottle. Step 4: Attach a one foot section of ½” PVC pipe to the other end of the ½” PVC elbows and use electrical tape to secure it in place. This is where you will place your rocket for launching. Step 5: Tape the entire launcher apparatus to the base we made in step one. Tape it just behind the PVC elbows for maximum stability. The base will help your rocket stay pointed in the same direction during launch. Now you are ready to launch your rocket by sliding your rocket on the end of your PVC pipe and then stomping on the 2-liter bottle. Note: Everyone in the area should have on eye protection because the rockets can fly with a surprising amount of force and could easily blind someone.

Mini Vortex Cannon (Physics)

02:21

BeardedScienceGuy

Mini Vortex Cannon (Physics)

This video shows you how to make a mini vortex canon out of a red solo cup, a balloon, and duct tape.

Edison Graphite Light Bulb (Physics)

01:33

BeardedScienceGuy

Edison Graphite Light Bulb (Physics)

This video shows you how to make a graphite light bulb similar to the one Edison made. Instead of using a vacuum pump to remove the oxygen gas we replaced it with a less reactive gas much like a modern light bulb. CAUTION: Be careful not to let the wires connect without the graphite in between them because this will create a short circuit and cause the batteries to become extremely hot and could lead to injury.

Cabbage Acid Base Indicator (Chemistry)

01:49

BeardedScienceGuy

Cabbage Acid Base Indicator (Chemistry)

This video shows you the steps involved in making a color changing acid base indicator using red cabbage. The molecule which gives the red cabbage it's color changes color when exposed to solutions with acidic or basic pH ranges. The color changes are not specific enough to be uses to determine a precise pH but the color changes do include the entire pH spectrum with several different vibrant colors from red to pink to blue to purple to green to yellow.

Strawberry DNA Extraction

01:45

BeardedScienceGuy

Strawberry DNA Extraction

This video shows you how to extract DNA using materials you can find around your kitchen.

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