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