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Making Chalk

Making Chalk. By: Alyssia Roch e. W hat y ou n eed t o k now a bout m aking c halk. The good news about chalk: Excellent medium for adding soft color, aging or shading to letters, borders, backgrounds, and embellishments Versatile, inexpensive, and easy to use

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Making Chalk

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  1. Making Chalk By: Alyssia Roche

  2. What you need to know about making chalk The good news about chalk: Excellent medium for adding soft color, aging or shading to letters, borders, backgrounds, and embellishments Versatile, inexpensive, and easy to use Doesn't dry out and never needs sharpening (unless in pencil form) Takes up little space Comes in dozens of colors Forgiving (erasable) and flexible Great investment Long lasting Chalk forms from the deep marine accumulation of the plates of organisms called coccolithophores. The plates are composed of the mineral calcite.

  3. Reason Why You would want to Make Chalk Why Do You think people put Chalk on the end of a Pool Stick? • The reason is friction. It may seem a bit unlikely that something so outwardly minor could actually supply a fundamental force of physics such as this, but the surface roughness made by applying the chalk affects the sliding friction and the "motion-resistance" between the pool cue and the contact area on the cue ball. Ultimately, it prevents the player from a miscue, typically a faulty contact where the tip slides off the ball without the proper spread for the stroke. • The reason why people eat chalk is because they have a disorder called Pica. is a medical disorder characterized by an appetite for substances largely non-nutritive (e.g. metal, clay, coal, sand, dirt, soil, feces, chalk, pens and pencils, paper, batteries, spoons, toothbrushes, soap, mucus, ash, gum, etc. or an abnormal appetite for food ingredients flour, raw potato, raw rice, starch, ice cubes, salt. • You are advised to undergo rectal examination to rule out fissure / piles (haemmeroids) 2. With regards to the black tarry stool you have to undergo endoscopy to rule out the cause for upper gi bleed,, once in a while bloody stools are caused in ulcerative colitis for that you need to undergo coronoscopy and barium enema,, in the mean time take medicine :liquid disogel 3 times a day 8 hourly , shun from drinking , tablet Sazo :salazopyrine can also give some relief. you can also contact me directly,, info in profile. • Why do people eat chalk? Reasons for using chalk piece when Blood in stool ?

  4. Na2CO3 +CaCl2“Yields” CaCO3 + 2NaCl Conservation Of Matter Reactants Products aq= aqueous S= solid

  5. Na2Co3 Sodium carbonate also known as Na2CO3 is a sodium salt of carbonic acid. It most commonly occurs as a crystalline heptahydrate, which readily effloresces to form a white powder, the monohydrate. Sodium carbonate is domestically well known for its everyday use as a water softener.

  6. CaCl2 Calcium chloride is a salt of calcium and chlorine. It behaves as a typical ionic halide, and is solid at room temperature. Common applications include brine for refrigeration plants, ice and dust control on roads, and desiccation. Because of its hygroscopic nature, anhydrous calcium chloride must be kept in tightly-sealed air-tight containers

  7. Making Chalk • 1st experiment Beaker with out salt (148.86g) Beaker with salt(154.65g) 154.65g -148.86g 5.76g Chalk with paper(14.16g) paper(2.37g) 14.16g - 2.37g 11.79g

  8. Chalk % is 117.9% Hypothesis Was more salt in it.

  9. After my 1st Experiment Chalk Chalk Salt

  10. Making Chalk • 2ed experiment Beaker with out salt (148.89g) Beaker with salt(15809g) 158.9g - 148.89g 10.01g Chalk with paper (8.84g) Chalk with out paper (1.15g) 8.84 - 1.15 7.69g

  11. Chalk % is 76.9% Hypothesis = in my 2ed experiment was that I should wash the product more and make sure that it ‘s mixed more.

  12. After my 2ed Experiment Salt Chalk

  13. Results for both experiments 1st time I did my experiment I had less salt left over , this can be a good thing it also can be a bad thing, the reason being is because I had way more chalk in my out come. The 2ed time I did my experiment I had more salt and less chalk, I believe the reason why this happened is because the salt spilled out from it being on the burner for to long and it also being to get Hot and boiling over.

  14. The End Chalk is a soft, white, porous sedimentary rock, a form of limestone composed of the mineral calcite. Calcite is calcium carbonate or CaCO3. It forms under relatively deep marine conditions from the gradual accumulation of minute calcite plates (coccoliths) shed from micro-organisms called coccolithophores. It is common to find chert or flint nodules embedded in chalk. Chalk can also refer to other compounds including magnesium silicate and calcium sulfate.

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