Introduction to Chemistry for Allied Health Sciences Density & Specific Gravity Kirk Hunter Chemical Technology Department Texas State Technical College.

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Presentation transcript:

Introduction to Chemistry for Allied Health Sciences Density & Specific Gravity Kirk Hunter Chemical Technology Department Texas State Technical College Waco

Density

DENSITY MASS PER UNIT VOLUME

DENSITY FOR SOLIDS AND LIQUIDS:

DENSITY FOR SOLIDS AND LIQUIDS: Note: 1 cm 3  1 mL

DENSITY FOR GASES:

DENSITY Example: Calculate the density of a metal if 356 grams occupies a volume of 43.1 mL.

Specific Gravity

SPECIFIC GRAVITY

Reference Substance WATER AT 4 o C

SPECIFIC GRAVITY Note: Specific Gravity has NO units.

SPECIFIC GRAVITY Example: The density of gold is 19.3 g/mL. What is its specific gravity?

SPECIFIC GRAVITY Notation /4

SPECIFIC GRAVITY Notation /  specific gravity

SPECIFIC GRAVITY Notation /4 25  temperature of substance measured in ºC.

SPECIFIC GRAVITY Notation /4 4  temperature of reference substance measured in ºC.