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Transcript
PROPERTIES
intensive, extensive and chemical
Objectives
• give examples of and characterize intensive, extensive and chemical properties
define physical property- any quality that can be observed without changing
the composition of the substance
physical properties include: melting point, boiling point, color, density, magnetism,
crystalline shape, malleability, ductility, luster, and refractive index
Physical Properties can be further classified as intensive or extensive
define intensive physical property- properties that DO NOT depend on the
amount of the matter present
define extensive physical property- properties that DO depend on the
amount of matter present
Intensive or
Extensive
temperature
25°
25°
mass
100.0 grams
10.0 grams
freezing point
0°
0°
volume
100.0 ml
10.0 ml
density
1.00g/ml
1.00g/ml
I
E
I
E
I
define chemical property- a substance’s ability to undergo a chemical reaction
chemical properties include: flammability, will oxidize/tarnish when exposed to air,
stability, corrosive
How can I use information about properties and changes
to justify whether a change is physical or chemical?
T. O’Toole
PRACTICE: identify the following properties as intensive, extensive, or chemical
I
E
I
I
C
granular texture
length
state of matter
density
reacts with acid
Minute Paper
Density is an intensive
property in spite of being
numerical (quantitative).
Density is not measured—
it is calculated. When the
mass of a substance
increases its volume will
also—but in a proportional
fashion thus always
producing a consistent
quotient.
How do I get from where I am to where I’m going?
The 10 Minute Makeover
Customize your learning by choosing from the following options each night
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Complete the appropriate section on the Portfolio Page
Complete questions #1-3 on the SYS Assignment
Review the PPT file on the website
Read pages 29-30 and pages 68-71 in the book
Watch the properties video on the chapter page of my website
Watch the density video on the chapter page of my website
Identify properties using : http://www.quia.com/jg/1162994.html
Check out the tutorial resources in the LiveBinder
Review the skills from today’s Train Your Brain
How can I use information about properties and changes
to justify whether a change is physical or chemical?
T. O’Toole