How to Dissolve Silicate

Written by shellie braeuner Google
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How to Dissolve Silicate
Natural acids wear holes in silicate stone. (Thinkstock/Comstock/Getty Images)

Silicates are some of the most common minerals on earth. According to Georgia Southwestern State University, silicates comprise roughly 74 per cent of the minerals in the Earth's crust. Silicon is second only to oxygen as the most abundant element in the crust. Silicon combines with other elements, such as calcium, iron, potassium and magnesium to form a wide range of silicate material. Natural acids form when rain combines with elements in the atmosphere. These acids dissolve silicates over time. In the lab, scientists use man-made copies of natural acids such as salicylic acid.

Skill level:
Moderately Easy

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Things you need

  • Aspirin tablets
  • Lab scale
  • 2 spoons
  • 500ml deionised water
  • Plastic container with lid
  • 1 tsp quartz sand

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  1. 1

    Place aspirin tablets on the scale. Add tablets until you have 10 grams of aspirin. Depending on the size of your tablet, this amount will be between 2 and 4 tablets. Use pure aspirin. Do not use the buffered tablets.

  2. 2

    Crush the tablets between two spoons until the material is a fine powder.

  3. 3

    Measure 500ml of the deionised water and pour it into the plastic container.

  4. 4

    Pour the powdered aspirin into the container with the water. Put the lid on the container. Gently shake the container to dissolve the powder.

  5. 5

    Open the container and pour the sand into the acid mixture. Observe the sand for 24 hours. The sand will dissolve, adding the composite minerals to the water and neutralising the acid.

Tips and warnings

  • To explore how acids dissolve silicates in another way, use a small fountain pump to recirculate the salicylic acid. Place a small hose over one portion of a quartz rock. Watch as the acid dissolves a channel in the quartz.
  • Use caution when working with salicylic acid. keep the acid off your skin and away from your eyes.

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