#2 Classification Lab /24

A mineral is a naturally occurring solid chemical substance, having characteristic chemical composition, highly ordered atomic structure, and specific physical propertiessolid chemical substance chemical compositionatomic structurephysical properties Minerals range in composition from pure elements and simple salts to very complex silicates with thousands of known forms. elementssalts silicates The study of minerals is called mineralogy.mineralogy

Mineral Properties Luster Hardness Streak Cleavage Parting Fusibility Specific Gravity Habit Tenacity Color Luminescence Radioactivity Magnetism Acid Reaction Luster Hardness Streak Cleavage Parting Fusibility Specific Gravity Habit Tenacity Color Luminescence Radioactivity Magnetism Acid Reaction

Minerals – are naturally occurring inorganic substances

Minerals – can be different colors, hardnesses,streaks,etc..

Lab I. TITLE: classification lab II. PURPOSE : to classify and prepare a “key” that allows for identification of various objects based upon observable properties. III.PROCEDURE : rtb :obtain a tray of items and begin to identify characteristics that allow for the making of a key similar to the ones seen in this presentation. Use your phone to take pictures of the items in your tray.

IV: DATA for tray number : _____ # of objects in tray: _____ OBJECT NAME length (cm) ColorFlexible or inflexible Shape ( round,square,irregular, etc) Use the ruler above to measure objects 20 rows deep

V. GRAPH : none VI. Q’s: prepare a “key” for identifying the objects in the tray(s) assigned to you. VII. Conclusion : VIII. SOE :

SAMPLE MISC OBJECTS LESS THAN 20 CM LESS THAN 15 CM LESS THAN 10 CM LESS THAN 5 CM BLACK,PURPLE RED,BLUE, GREEN WHITE,GREY