J. Analyze these two photomicrographs of ice crysta (snowflakes) by William Bent
ID: 1583126 • Letter: J
Question
J. Analyze these two photomicrographs of ice crysta (snowflakes) by William Bentley 1. Based on FIGURE 3.4, what is the crystal form of the top crystal? 2. Notice that the crystals are symmetrical, but not exactly. Imperfections are common in crystals, but their underlying crystal form can still be detected. To what crystal system in FIGURE 3.5 do ice crystals belong? How can you tell? 0.1 mm 3. REFLECT & DISCUSS The habit of snowflakes (crystals of water ice jacludes a variety of different crystal forms. Why donb all snowflakes have the same crystal form? K. Analyze each crystalline household material pictured below and identify which crystal system it belongs to. (Use a hand lens or microscope to observe actual samples of the materials if they are available Epsome 1. Sucrose (table sugar) belongs to the crystal system How can you tell? 2. Epsomite (epsom salt) belongs to the crystal system. How can you tel? 3. Halite (table salt) belongs to the crystal systenm How can you tell 4. REFLECT & DISCUSS Which of these crystalline houschold materials (sucrose, epsomite, or halite) cannot be a mineral: Why not? 103Explanation / Answer
Answer:1
Based on figure 3.4, the crystal shape of first diagram would be dipyramid prism (Hexagonal system) as you can see and count six faces in the diagram. And the crystal shape of second digram would be mixture of dipyramid prism and dendritic, as you can see the internal shape are in the form of dipyramid prismand outer shape are in the of dendritic rims.
Answer:2
Based on figure 3.5, the crystal shape of first ice crystal is hexagonal system as as you can see and count six faces. And the second ice crystal would also show hexagonal system though there are some imperfections can be seen at the outer rims.
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