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Bell Work 9-19-2014
Review from yesterday…SPI 0707.7.1 Can I describe and
classify the physical properties of minerals?
Silicate vs. Non-silicate Minerals
KWL Chart…let’s add to the “L”!
Word WallCrystalline
Made of crystals
Word WallComposition
a product of combining ingredients.
WEIRD SCIENCE…How can you tell a real diamond
from a fake?◦A gem specialist uses specialized
tools to distinguish real diamonds from imposters. But there are some tests that even an untrained person can conduct.
◦One of the simplest tests is to try to pick up the stone in question with a moistened fingertip.
◦Diamonds can picked up this way; most other stones cannot.
Why?Why?Engineers use rocks and minerals to create
technologies.
Minerals are all around us — in our kitchens and bathrooms and in our cars and bicycles.
Today we will learn how geologists identify minerals so engineers have the appropriate materials to use to create their technologies.
ObjectivesObjectivesSPI 0707.7.1 Can I describe and
classify the physical properties of minerals?◦What is a mineral?
◦Identification of minerals
7 Ways to Identify Minerals:1. _________: can be used to
identify minerals; however, the same mineral can come in a variety of colors.
Challenge QuestionIs color the best way to identify
a mineral? Why or why not?
Color
7 Ways to Identify Minerals:2. _________: the way a surface
reflects lightTypes of Mineral Luster Metallic: bright, reflective Submetallic: dull, reflective Nonmetallic: vitreous (glassy), silky,
resinous (plastic), waxy (greasy), pearly (creamy), earthy (rough)
Challenge QuestionIs luster the best way to identify
a mineral? Why or why not?
Luster
7 Ways to Identify Minerals:3. _________: the color of a mineral
in powered form A mineral’s _________ can be found by
rubbing the mineral against a piece of unglazed porcelain called a __________ _________.
The mark left on the streak plate is called the __________.
Challenge QuestionIs the mineral’s streak color the
same as the color of the mineral? Why or why not?
Streak
streak
streak plate
streak
Each group member choose one of three identification methods we have taken notes on so far, and teach your other group members about this way to identify a mineral. Take turns and be good listeners! You have 2 minutes!
7 Ways to Identify Minerals:4. _____________: different types of
minerals break in different ways _________ is the tendency of some
minerals to break along smooth, flat surface.
_________ is the tendency of some minerals to break unevenly along curved, jagged, or irregular surface.
Challenge QuestionWhat determines the way
minerals break?
Cleavage & Fracture
CleavageFracture
7 Ways to Identify Minerals:5. _____________: a minerals
resistance to being scratched To determine the hardness of minerals,
scientists use the ______________________.
The _____________ the mineral’s resistance to being scratched, the ___________ the rating.
Mohs Hardness Scale ranges from ___________ to _____________.
Challenge QuestionWhat is the only mineral that
can scratch a diamond?
Hardness
Mohs Hardness Scalegreater
higher1 (softest)
10 (hardest)
7 Ways to Identify Minerals:6. _____________: the measure of
how much matter is in a given amount of space (volume) Formula for density: D = m (broken
heart)
Challenge QuestionWhat science tool would we use
to measure the mass of the mineral? Volume?
Density
v
7 Ways to Identify Minerals:7. _____________: characteristics about
a mineral that only a few minerals have (or sometimes it is the only mineral that has that trait).Examples: Fluorescence Chemical Reaction Magnetism Taste
Challenge QuestionHow can you tell if a mineral has
the property of fluorescence?
Special properties
Candy Mineral Classification Look classification chart for
minerals. With your group, develop a
system for classifying candy “minerals” based on their observable physical properties.
Mobile Learning LabsMobile Learning LabsStation #1: Color
Station #2: Luster
Station #3: Streak
Station #4: Hardness
Station #5: Cleavage/Fracture
Station #6: Special Properties- Fluorescence
Station #7: Formation of Minerals
Station #8: Mining
Exit Ticket Exit Ticket List three physical properties that
can be used to classify minerals. Describe each of the property