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Bellwork

Bellwork. What are the five characteristics of a mineral?. BELLWORK. DISCUSS A SCIENTIFIC OBSERVATION YOU HAVE MADE RECENTLY. Earth Science Chapter 3 Minerals. 5 characteristics of minerals Flip book. Bellwork. What is the difference between rocks and minerals? . Identifying minerals.

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Bellwork

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  1. Bellwork What are the five characteristics of a mineral?

  2. BELLWORK • DISCUSS A SCIENTIFIC OBSERVATION YOU HAVE MADE RECENTLY.

  3. Earth Science Chapter 3 Minerals • 5 characteristics of minerals • Flip book

  4. Bellwork • What is the difference between rocks and minerals?

  5. Identifying minerals • There are over3800 minerals! • Each mineral has physical characteristics that can be used to identify it • Some properties are easy to see just by looking • Others are only observed through tests

  6. Color • Most minerals are not easily identified by color • Some are, however • Malachite=green • Azurite=blue

  7. Malachite

  8. Azurite

  9. Streak • The color of a mineral’s powder • Pyrite (fool’s gold) produces a green/black streak

  10. Streak

  11. Luster • How light is reflected from a mineral’s surface

  12. Density • Density=Mass/Volume • Mass is found using a balance • Volume is found by determining the amount of water displaced

  13. Mass

  14. Volume

  15. With a Partner • Work with a partner and answer the Math questions on page 71.

  16. Bellwork 9-30 • Discuss a scientific observation you made this weekend

  17. Hardness • How hard a mineral is based on Mohs hardness scale

  18. Mohs Hardness Scale

  19. Crystal Systems • Crystals of each mineral grow atom by atom to form that mineral’s crystal structure • There are 6 crystal systems: • Cubic • Hexagonal • Tetragonal • Orthorhombic • Monoclinic • Triclinic

  20. Crystal growth • http://www.youtube.com/watch?v=7vb84ShuiJw

  21. Cleavage and Fracture • Cleavage is the way a mineral splits easily along a flat surface • Fracture describes how a mineral looks when it breaks apart in an irregular way • Shell • Hackly • Earthy • Uneven

  22. Cleavage

  23. Fracture

  24. Special Properties • Magnetism • Fluorescence • Bends light • Reactivity

  25. Rubric: • Each student needs to create at least two crystals, any size, made of any material that is safe, and able to grow crystals • Groups need to put their crystals together to form a “garden” • You can use a shoe box or some other container • Students need to keep a chart of their crystal’s growth as well. A detailed log and/or graph will need to accompany the garden and presentation

  26. Bellwork • What are the physical properties of minerals?

  27. Experiment • Find a lab partner to work with (groups of up to 3) • Or you may work individually

  28. First Experiment • Crystals: • Cut a piece of black paper that will fit just right into your lid • I will mix the water and salt and we will share the mixture • Pour just enough into your lid to just cover the paper

  29. Second experiment • Fracture • Wait for instructions

  30. Third experiment • Reactivity • Pour a little vinegar into your glass • Carefully place your shell in the glass and wait for the reaction

  31. Tomorrow we need • Baby jars • Cotton string • washers

  32. On your own • There are two ways that crystals can form • Read about these in section 2 • Write the process/definition and make a flow chart describing the process

  33. Bellwork • How do you think minerals are formed?

  34. http://www.youtube.com/watch?v=wgUFb_l4DLE • http://www.youtube.com/watch?v=HN1eRMsAluE

  35. Magma and Lava • What is a Geode? • Describe crystallization. • What is Magma? • What is Lava? • Why do crystals form when magma cools rapidly? • How do minerals form from magma and lava? • Draw a picture to illustrate this

  36. Solutions • What is a solution? • How are minerals formed form solutions? • Draw a picture to illustrate this. • How do minerals form by evaporation? • Draw a picture to illustrate this. • How do minerals form from hot water solutions? • Draw a picture to illustrate this.

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