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Glow in the Dark Alum Crystal

Alum crystals are among the quickest, easiest, and most reliable crystals you can grow. Did you know you can make them glow in the dark by adding a common household ingredient to the crystal growing solution?
* fluorescent highlighter pen (I used yellow, but you can use another color for different colored glowing crystals. Check to make certainthe highligher will glow under an ultraviolet or black light. Pretty much all yellow highlighers glow, as do most other colors. Many blue pens will not glow.)
* alum (sold as a pickling spice)
* water
Grow Glowing Alum Crystals
1. Carefully cut open the highlighter and remove the strip that contains the ink. You may want to wear gloves, since highlighter can stain your fingers.2. Pour 1/2 cup of hot tap water into a clean container.
3. Squeeze the highlighter strip into the water to color it with the fluorescent ink. Discard the ink strip when you are finished.
4. Slowly stir in alum, a little at a time, until it stops dissolving.
5. Loosely cover the jar with a coffee filter or paper towel (to keep dust out) and allow the jar to sit undisturbedovernight.
6. The next day, you should see small alum crystals at the bottom of the container. If you don't see crystals, allow more time. You can let these crystals grow, though they will conpete with each other for material. Alternatively, you can use one of these crystals to grow a large single crystal.
Growing a Large Single Crystal
1. If crystals are present, pour the alum solution into aclean jar. Collect the small crystals, which are called seed crystals.
2. Tie nylon line around the largest, best-shaped crystal. Tie the other end to a flat object (e.g., popsicle stick, ruler, pencil, butter knife). You will hang the seed crystal by this flat object into the jar far enough so that it will be covered in liquid, but won't touch the bottom or sides of the jar. It may take a fewtries to get the length just right.)
3. When you have the right string length, hang the seed crystal in the jar with the alum solution. Cover it with the coffee filter and grow a crystal.
4. Grow your crystal until you are satisfied with it. If you see crystals starting to grow on the sides or bottom of your jar, carefully remove your crystal, pour the liquid into the clean jar, and putthe crystal in the new jar.
Making the Crystal Glow
When you are satisfied with your crystal, remove it from the crystal growing solution and allow it to dry. Just shine a black light (ultraviolet light) on the crystal to make it glow. Depending on the ink you used, the crystal may glow under fluorescent light or sunlight.
You can display your crystal or store it. You can wipe dust from adisplay crystal using a cloth, but avoid dampening it with water or else you will dissolve part of your crystal. Crystals kept in storage may be wrapped in paper for added protection from dust and changed in temperature and humidity.

Fire is made up of light and heated gases from combustion. You can control the temperature of fire by selecting a fuel that burns with a cool flame. Ifyou pour the fuel onto a substance that won't burn, you can make a fireball that you can hold in your hand or juggle. Here are written instructions for making your own handheld fireballs. There is also a step-by-step video tutorial of this fire project if you would like see what to expect.
* 2" x 5" strip of cotton cloth (like from a t-shirt)
* 100% cotton thread
* needle* naphtha lighter fluid (e.g., Ronsonol™)
* match or lighter
How to Make a Fireball
* Thread the needle with cotton thread.
* Tightly roll the cotton strip into a ball.
* Pierce the ball with the needle and wrap the ball with the thread. End by running the needle through the ball one more time and break off the thread.
* Soak the ball with lighter fluid. Don't...