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Chalk comes from underground : if you are talking about chalk that you write with on cement. Anyways, here is how you can make it at home.

Items Needed :

- a ziplock bag (something that will close completely)

- rock salt

- baking powder

- a t-spoon

- a small cup (a bathroom paper cup - or at least similar to that)

- a measuring thing, to measure ml

- water

INSTUCTIONS (follow them CAREFULLY) :

1st: pick up your t-spoon and measure out 1 t-spoon of baking powder.

2nd: now measure with your t-spoon 2 t-spoons of rock salt.

3rd: pour these into the ziplock bag

4th: measure out 10 ml of water (H20)

5th: now pour that water into the small dixie cup (or whatever you are using)

6th: carefully have someone hold the bag open and set the dixie cup full of water into the bag up-right

7th: close the bag TIGHTLY and try to get ALL OF THE AIR OUT of the bag

8th: pick the bag up and shake it so that the water comes out of the dixie cup

9th: watch what happens; it is pretty cool - observe the bag and touch the bag

10th: take the new substance out of the bag and set it onto something hard and sturdy. Wait for 5 hours and it should be dry by then.

11th: after the 5 hours lift it up in your hands and go outside and play with it on the driveway!!

HAVE FUN!!!!

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12y ago
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Q: Where does chalk come from and can you make it?
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