Lets study

Have u ever heard of making a sugar crystal?

Yup! we done at school using salt to make crystal. Unfortunately, mine is bad when I am really lazy to take care of it!To let you know, i just copied from the internet to have some source.Let's see how it works.

Sugar crystals are also known as rock candy since the crystallized sucrose (table sugar) resembles rock crystals and because you can eat your finished product. You can grow beautiful clear sugar crystals with sugar and water or you can add food coloring to get colored crystals. It's simple, safe, and fun. Boiling water is required to dissolve the sugar, so adult supervision is recommended for this project.

Here's How:

1. Gather your materials.
2. You may wish to grow a seed crystal, a small crystal to weight your string and provide a surface for larger crystals to grow onto. A seed crystal is not necessary as long as you are using a rough string or yarn.
3. Tie the string to a pencil . However, you want the string to hang nearly to the bottom. Adjust the length of the string, if necessary.
4. Boil the water. If you boil your water in the microwave, be very careful removing it to avoid getting splashed!
5. Stir in the sugar, a teaspoonful at a time. Keep adding sugar until  it won't dissolve even with more stirring. This means your sugar solution is saturated. If you don't use a saturated solution, then your crystals won't grow quickly. 
6. If you want colored crystals, stir in a few drops of food coloring.
7. Pour your solution into the clear glass jar. If you have undissolved sugar at the bottom of your container, avoid getting it in the jar.
8. Place the pencil over the jar and allow the string to dangle into the liquid.
9. Set the jar somewhere where it can remain undisturbed. If you like, you can set a coffee filter or paper towel over the jar to prevent dust from falling into the jar.
10. Check on your crystals after a day. You should be able to see the beginnings of crystal growth on the string or seed crytal.
11. Let the crystals grow until they have reached the desired size or have stopped growing. At this point, you can pull out the string and allow the crystal to dry. You can eat them or keep them. Have fun

Tips:

1. Crystals will form on a cotton or wool string or yarn, but not on a nylon line. If you use a nylon line, tie a seed crystal to it to stimulate crystal growth.
2. If you are making the crystals to eat, please don't use a fishing weight to hold your string down. The lead from the weight will end up in the water -- it's toxic. Paper clips are a better choice, but still not great.

What You Need

• 1 cup water
• 3 cups table sugar (sucrose)

• clean glass jar

• pencil
• string
• pan or bowl for boiling water and making solution
• spoon or stirring rod

This is how it look likes!