Experiments that we can do

1-BALANCING HEX NUT CHALLENGEThis teeter-tottering tower of hex nuts can balance on the edge of a glass, but you’ll need help from magnets.There are a number of things that can help your balance. You could try walking with books on your hand, walking a tightrope, or taking some ballet classes. If you’re a hex nut, however, you’re going to need some help from magnets and their magnetic fields. Do you think you have the magnetism it takes to master the Balancing Hex Nut Challenge?Materials

4 soda cans 2 ceramic magnets Ruler 5 hex nuts Tall drinking glass (empty) Adult supervision

EXPERIMENT1. Stack the soda cans, two on each side, at ruler’s length apart.2. Place the magnets on either side of the ruler’s midpoint so they stay in place.3. Set the ruler on top of the soda can towers and place the drinking glass between the towers.4. Attach hex nuts, one at a time, to the magnet underneath the ruler. Continue attaching hex

nuts until all 5 hang from the magnet.5. Slowly, and carefully, detach the hex nut chain and balance it on the edge of the glass. Make

sure the edge is directly below the magnet.The hex nuts will balance, precariously, atop the drinking glass’s edge until you remove the magnet. Go ahead… remove the magnet and watch them drop.

HOW DOES IT WORK?Balancing the hex nuts on the edge of the glass seems like an impossible task. In fact, we doubt you can do it without the help of magnets.It’s easy to tell, as you attach hex nut after hex nut, that the magnets are causing the hex nuts to attract each other. While the hex nuts are in contact with the magnet, they actually develop their own magnetic field. Their magnetic fields even last after you detach them from the magnet, but the field is much weaker.When you balance the hex nuts on the edge of the drinking glass, they still have a little bit of magnetism left. This weak magnetic field is just enough to attract the hex nuts to the magnet, and the magnet’s much stronger magnetic field, overhead. The attraction is enough to allow you to complete the Balancing Hex Nut Challenge… just don’t move that magnet.

http://www.stevespanglerscience.com/lab/experiments/balancing-hex-nut-challenge

I think that this experiment is good because it demonstrates that we can balance the 5 complete nuts, I think that this experiment can be easier because it looks like.

2-Magnetic Money

It's true, money is magnetic! You'll need to get your hands on a super strong neodymium magnet to uncover an amazing secret.Materials

Super Strong Neodymium Magnet Dollar bill

EXPERIMENTBelieve it or not, dollar bills are printed with magnetic inks as a way to reduce counterfeiting. Fold the dollar bill in half as shown and hold the neodymium magnet near the bottom of the bill. Notice how the bottom of the bill moves when the iron in the bill is attracted to the magnet. Bob Becker, a teacher in Kirkwood, Missouri, takes the experiment one step further by turning a dollar bill into soup in a blender. That’s right, he blends a dollar bill with about 200 mL (1 cup) of water. The magnet is held on the outside of the blender while the slurry is whirling around. The blender is stopped and the magnet is slowly pulled away from the blender to reveal the spot of iron. Be sure to perform the experiment with a borrowed bill! Just remind the lender that you’re increasing his “liquid assets” or that you’ve found a way to increase her “cash flow” problems. Yes, Bob Becker is a funny guy... or at least that’s what his attorney says.If you are interested in this activity, see Money in a Blender.

HOW DOES IT WORK?Neodymium magnets (Nd-Fe-B) are composed of neodymium, iron, boron, and a few transition metals making them some of the strongest magnets in the world. Magnets of all types create a magnetic field, with both north and south poles. The magnetic field created by the neodymium magnets is so strong, it will line up to match the magnetic north and south of the earth. It makes a great compass!Stick one in your pocket and accidentally walk by the refrigerator, and your family will find you stuck to the door! Just one of these magnets will hold 25 of our catalogs to a steel filing cabinet (the things we do when we’re bored!).On a more serious note, the large magnets are so strong that they may even be dangerous if not handled properly. A pair of these magnets will leap into a deadly embrace from over 6 inches apart and may knock chips off themselves from the force of the impact. You'll be amazed at the super strength of the magnets, but we must warn you to be careful. Any type of magnetic media will be history in the presence of one of these large neodymium magnets.

http://www.stevespanglerscience.com/lab/experiments/magnetic-money

I think that this experiment is good because it is easier to do, and another thing is that it don’t use many materials, only 2 materials and the experiment looks nice.

3-MAGNETIC SLIMEGrab a magnet, make some slime, and experience stretchy magnetism.

You’re a hands-on scientist, right? That means you’ve definitely played with magnets and slime. Did you know that you can play with both at the same time? Our ever-amazing slime-ologists have discovered a way to make Magnetic Slime. Seriously, we’re very “attracted” to this new kind of slime that jumps to a super-strong neodymium magnet. This is a hands-on

science activity you have to do to believe.Materials

8 oz. bottle of school glue Borax Large mixing bowl Plastic cup Measuring cup and utensils Zipper-lock bag Iron filings Neodymium magnet Water Adult supervision

EXPERIMENT1. Empty the entire bottle of school glue into the large mixing bowl.2. Add water to the empty glue bottle, tighten the lid, and shake it up.3. Pour the water and glue solution from the bottle into the bowl.4. Add some iron filings to the mixture of water and glue before stirring the entire mixture.5. Measure 1/2-cup of water and pour it into the plastic cup.6. Add 1 teaspoon of borax to the cup of water and stir the solution.7. Add the borax solution to the mixture in the bowl.8. Mix it up VERY well.9. Hover the neodymium magnet near the slime and witness some ooey, gooey, slime-based

magnetism.Wanna play with the slim later? Store it in a zipper-lock bag.

HOW DOES IT WORK?What makes this slime magnetic? A simple way of discovering which component of your slime causes the magnetic attraction is to test the components individually. For the sake of saving your iron filings to their demise at the hands of a super-strong magnet, we’ll tell you that the iron filings are the magnetic material. Iron is one of three elements (cobalt, iron, and nickel) that are magnetic at room temperature.The mixture of school glue with borax and water produces a putty-like material called a polymer. In simplest terms, a polymer is a long chain of molecules. You can use the example of cooking spaghetti to better understand why this polymer behaves in the way it does. When a pile of freshly cooked spaghetti comes out of the hot water and into the bowl, the strands flow like a liquid from the pan to the bowl. This is because the spaghetti strands are slippery and slide over one another. After awhile, the water drains off of the pasta and the strands start to stick together. The spaghetti takes on a rubbery texture. Wait a little while longer for all of the water to evaporate and the pile of spaghetti turns into a solid mass -- drop it on the floor and watch it bounce.

Many natural and synthetic polymers behave in a similar manner. Polymers are made out of long strands of molecules like spaghetti. If the long molecules slide past each other easily, then the substance acts like a liquid because the molecules flow. If the molecules stick together at a few places along the strand, then the substance behaves like a rubbery solid called an elastomer. Borax is the compound that is responsible for hooking the glue’s molecules together to form the putty-like material. There are several different methods for making this putty-like material. Some recipes call for liquid starch instead of Borax soap. Either way, when you make this homemade Silly Putty you are learning about some of the properties of polymers.Now, what prevents the iron filings from flying out of the slime? The slime is able to hold onto its iron filings by adhesion. Adhesion is the force that holds molecules of different substances together. In addition to adhesion, the slime is bonded together by cohesion, the force that holds molecules of the same substance together. The combination of magnetism, adhesion, and cohesion results in the weird, stretchy volcanoes that appear when you hover the neodymium magnet near the slime!

http://www.stevespanglerscience.com/lab/experiments/magnetic-slime

I think that this experiment is good because it looks nice and I think that is easier to do , and with this experiment we can prove that what is the magnetism and it can be in all the things.

Experiments videos

https://www.youtube.com/watch?v=f6pxtfrbxSU – I think that is a good experiment because it need materials that we can have in the house.

https://www.youtube.com/watch?v=g4lW7xydnH8 – I think that is a good experiment because if we talk about physics it can’t be possible