Chemical Reactions

Make a Christmas-time glitter globe (aka snow globe)

In this science experiment we will mix molecules to make a glitter globe ( a "snow globe"). We will combine rubbing alcohol, vegetable oil, and a few other tiny, shiny things to make a cool science toy. How to make a glitter globe Fill a clear plastic or glass bottle 1/4 full of rubbing alcohol. Add one drop of food coloring if you want to give the liquid mix some color (and make it easier to differentiate the alcohol layer from the layer of oil that we will add next).Note: if you want to use your snow globe for decorative purposes, skip the food coloring altogether. Fill the remainder of the bottle with baby or vegetable oil (the oil will sit on top of the alcohol).  Leave…
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Pressure

Magical inflating balloons

Magical inflating balloons One of the first things a little scientist should learn is that heat causes things to expand (get bigger) and cold causes things to contract (get smaller). Things such as air will contract and take up less room when cooled. Similarly, things will expand when they get hot. If you don't believe this, carefully observe Dad's head the next time you break one of his expensive tools (Reeko tip - observe from a distance). Ok, so Reeko's gonna save you some heartache. Rather than test this by breaking one of Dad's tools, let's try the following experiment instead. Fill the bottle with hot water. Fill the bowl with cold water. Let both sit for one minute. Then empty out the bottle. Stretch…
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Pressure

Homemade Barometer experiment

Homemade Barometer The air pressure around us greatly affects our weather. Notice how your weatherman always mentions various pressure systems (low pressure system, high pressure system, etc.) and how they will affect tomorrow's weather. In this experiment, we will create a tool that lets you gauge the pressure of the air around you. Fill the measuring cup or glass with water and add some colored dye to it. Flip the empty soda bottle upside down into the glass measuring cup. Make sure that you use a bottle that is just the right size. The thicker body of the bottle should fit snugly in the measuring cup so that the mouth of the bottle does not touch the bottom of the cup. Make sure that the…
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Floatation

The homemade pen cap sinker

Make a pen cap sinker to demonstrate Pascal’s law Fill the plastic bottle with water. Attach a piece of clay to the arm of a plastic pen cap. Put the cap in the bottle so that it floats. Put the lid on the bottle and tighten so that it does not leak any air. Squeeze the sides of the bottle. What do you think causes the pen cap to sink when you squeeze the sides of the bottle? By squeezing the bottle, you increase the pressure inside, thus forcing more water up into the pen cap. The added water in the cap increases its weight and causes the cap to sink. A submarine works along these same principles. If the average density of the submarine…
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Cohesion

Rocket powered pennies

Rocket powered pennies Remember - heat causes things to expand (or get larger). Cold causes things to contract (or get smaller). Heating an object sealed inside another object can produce some interesting results. Let's demonstrate with this experiment. Take an empty soda bottle and place it in the freezer for about 1 hour. Take the bottle out of the freezer. Wet the top and place a penny on the top so that it covers the mouth of the bottle (there should be no air leaks). Place the bottle back in the freezer for at least another hour. Take the bottle out of the freezer and grasp the sides with both hands. Hold the bottle tight and wait. Were you surprised? Placing your hands around the…
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Chemistry

Using dry ice to blow up a balloon

Blow up a balloon with solid carbon dioxide Most substances have three states – solid, liquid, and gas. When they go from a solid to a gas, they usually turn into a liquid in between. Ice is a good example. It first melts into a liquid and then evaporates into a gas. Sublimation is when a chemical compound turns from a solid to a gas without turning into a liquid in between. Solid Carbon dioxide (or dry ice) and iodine are two compounds that sublime. When dry ice sublimes, it turns directly into carbon dioxide gas which expands in the process. Therefore, we can take dry ice, let it sublime into a gas, and use the gas to blow up a balloon. Follow these steps:…
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Chemistry

Ultra Cold LN2 Replacement

Ultra Cold LN2 Replacement that will instantly freeze anything! NOTE: THIS EXPERIMENT IS HIGHLY HAZARDOUS AND CAN RESULT IN INJURY OR DEATH. IT IS NOT INTENDED TO BE CONDUCTED BY CHILDREN BUT RATHER, SHOULD BE CONDUCTED BY SICENCE TEACHERS ONLY! Liquid nitrogen, represented by the equation LN2, is often used in higher level science experiments. In this experiment, we’ll create a liquid with the same “ultra cold” properties found in liquid nitrogen. You’ll need two plastic bottles, one slightly smaller than the other. Cut the tops off of both bottles. Cut a few inches down so all of the curved neck of the bottle is removed. In the smaller bottle poke a bunch of holes in the sides and bottom of the bottle. Now place…
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Chemical Reactions

Look out, she’s gonna blow!

The infamous baking soda volcano experiment Now we're going to get a little messy. In this experiment we build a real working volcano. After mixing just the right amount of ingredients together, we'll add the final item to make our volcano 'blow its top' spewing red lava down the sides.  Yes, this is the famous “Baking Soda Volcano” experiment - found exclusively at Reeko’s Mad Scientist Lab (and on the websites of the millions of Reeko’s minion slaves). First we need to create the 'salt dough'. Mix 6 cups flour, 2 cups salt, 4 tablespoons cooking oil, and 2 cups of water in a large bowl. Work the ingredients with your hands until smooth and firm. Add more water to the mixture if needed. Stand…
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Chemical Reactions

Elephant Toothpaste

Help an elephant with those 9-pound molars So you don’t want to be a kid and instead want to be an elephant because Reeko said elephants never have to brush their teeth? Well Reeko has news for you – there’s a lot more differences between kids and elephants than just their teeth. If you don’t believe that, try picking one up. Imagine being an elephant and always loosing at hide and seek. Even when dressed in yellow and disguised as a banana they are easy to find in a crowd. They are large, gray, and wrinkly. And when they do brush their teeth – well, those are 9 pound molars they have to deal with. Now that we have your elephant yearnings out of the…
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