1. Which two elements take up three quarters of the mass of the Earth’s crust? Briefly explain why using the composition of rocks.
2. Provide a daily-life analogy that explains the difference between rocks, minerals, and elements.
3. Do some online research and list three common minerals that you can find in local rocks. Try to find out their chemical compositions and crystal symmetry. Also provide relevant information on its characteristics, such as colour and hardness.
4.(During the winter months, choose from the following: quartz, feldspar, pyroxene, amphibole, mica, clay, or calcite)
How does the structure of clay make it a good material for pottery?
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