let's to do interesting experience to grow sweet crystals!
Thes chemical reaction, at first: we get a color, at second: we get a crystal that is possible to touch and eat!
Of the substances we need:
- - jars with a wide throat which will grow colored crystals
- - the skewers on which they will grow,
- - clothespins to fasten the skewers on jars
- food dye that will make our sweet crystals.
- - you may need the flavors, if necessary, to the crystals smelt
- and, of course, the most important ingredient, from which we will grow the crystals - is sugar!
If everything is ready, then prepare the following proportion of saturated sugar solution: 10 cups of sugar and 4 cups of water. Pour into a saucepan 4 cups of water and put to heat, then pour in it 4 cups of sugar (not 10, but 4 cups!). Wait until the water boils and, accordingly, the sugar will dissolve. You can stir. After boiling add the remaining cups of sugar, stir the sugar solution.
After final the dissolve of sugar remove the stop heating, let our "sugar syrup" cool down. Meanwhile, it needs to prepare the sticks. Before using them it is necessary to moisten with water, to sugar better attached and appear fine crystals, from which will grow large crystals.
Now attention! Put our wet sticks in a "sugar syrup" and pull them back for thorough drying. This operation is necessary in order to get the crystals on the sticks. After dropping the sticks have to dry well, otherwise it will not work.
If all is done correctly, begin to fun job! Pour the sugar solution from the pot in a few jars, add to each your food color and then slowly put in it prepared and dried a sticks that will hang (as on picture). Please note that the sticks don't touch the bottom, and each other and the walls of the container (if in a jar a few sticks). This will provide the free growth of crystals.
That's all. Now place the jars in a bright and relatively warm place (glass cabinet, shelf in the room) and leave them for a week for a sweet result!
interesting experience to grow sweet crystals
How to make a slime
How to make slime at home - use the means available - PVA (or polyvinyl alcohol), sodium borate (H3BO3). PVA glue can be purchased at office supply or business stores, and sodium borate - in the pharmacy as a disinfectant substance.
Take a bowl of small capacity, which is then no longer useful at home. Depending on what the size of the slime we need, pour the glue to the bowl and add a little borate of sodium (the proportions of the reactants are 3 : 1 where 3 parts is PVA glue).
Once the reagents are mixed, you need to carefully stir with a stick until you get a thick substance. Also to reagents (to glue) to add a dye, food dye, for larger effect. Then, when these already thickened solution (the lump), it is desirable to place in the pack and play a bit, flexing his hands. Then we release licking from the package!
Interesting chemical experiment with an egg
As we all know, the egg has a thin outer shell (shell), the main chemical component of which is calcium (Ca). Do an interesting chemical experiment with egg at home. For this we need: one egg, acetic acid, and glass cup (egg will have been placed in it).
So, put the egg in a glass and fill the glass with vinegar. In this form, leaving egg in a glass a couple days.
After the egg shell reacted with acetic acid, as that is calcium in the egg shell, reacted with acetic acid, formed a solution of calcium acetate, then protein and yolk denatured (changed shape of protein molecules) with the action of acetic acid (remember, protein denaturation occurs also at the temperature when the egg, for example, is brewed).
Now you can get the egg. Elastic translucent yellowish-orange shell, such properties must have the egg. If the lights off and light to egg with flashlight, that egg turns into a luminous capsule, just beautiful!