Growing Crystals

By Morgan price

Initial Resaerch-

1.Whatis a crystal? Crystals are solids that form by a regular repeated pattern of
molecules connecting together. In some solids, the arrangements of the building
blocks (atoms and molecules) can be random or very different throughout the
material. In crystals, however, a collections of atoms repeated in exactly the same arrangement over and over throughout the entire material.

2.What substances can be used to make crystals?



3.What are some examples of crystals in nature? What household items can you also grow crystals from? Some crystals that we see in nature are dimonds, salt, sugar and snowflakes. Household items that you can grow crystals are salt and water.

4.Explain the process of crystal growth.



5.Explain how crystals can grow in different shapes and sizes.



6.Outline a few different types of crystals.



7.What effect do crystals have on light travelling through them? (relate to
reflection, refraction, dispersion and diffraction)



8.What are the optimum conditions for crystal growth?



DAY 1- Tuesday 17th of September, 2013

Materials

-25g potash alum

-170mL hot water

-Spatula

-2x250mL beakers

-Filter funnel

-Filter paper

-iPhone(Camera)

Method

Put 25g of potash alum and 170mL of hot water in a 25omL beaker. Stir untill all dissolved. Filter the solution through a filter funnel with filter paper inserted into another beaker. Cover with wtahcglass or fresh filter paper and allow to stand overnight undisturbed. Record level of solution and take photographs.

DAY  2- Wednesday 18th of September, 2013

Materials

-250mL beaker

-iPhone(Camera)

Method




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