3. Chemical Properties
• Types of Chemical Properties:
• Combustible/flammable:
• able to burn
• Examples & Facts:
• all chemicals come with a
label that identifies their level
of flammability
4. Chemical Properties
• Types of Chemical Properties:
• Combustible/flammable:
• able to burn
• http://youtu.be/EZ3JT2nWfMA
− 1:30 Combustion of Mg
• Examples & Facts:
• oxygen & hydrogen are very
flammable gases
• carbon dioxide is not a very
flammable gas
5. Hay Bale combusting
• http://www.youtube.com/watch?
v=zRNCrHqD0zE
• Stop at 35 seconds
6. Chemical Properties
• Types of Chemical Properties:
• Reactivity:
• how easily a substance reacts
with another substance
• http://youtu.be/sS3cIK9jlB8
− 1:10 min Alkali metals reaction to water
• Examples & Facts:
• many chemicals react with
water or oxygen
• all chemicals come with a
label that identifies their level
of reactivity
7. Chemical Properties
• Types of Chemical Properties:
• Reactivity:
• how easily a substance
reacts with another
substance
• Examples & Facts:
• corrosion: slow reaction
& wearing away of metals
(rusting, tarnishing)
10. Physical Properties
• Types of Physical Properties:
•
•
•
•
•
•
•
color
texture
odor
taste
hardness
magnetic
boiling, melting, & freezing points
11. Physical Properties
• Types of Physical Properties:
• Luster:
• shininess or dullness
• Examples & Facts:
• most metals are shiny
• diamonds have a lot of
luster
• many minerals are dull
12. Physical Properties
• Types of Physical Properties:
• Brittleness:
• how easily a substance breaks into
pieces
• Examples & Facts:
• very brittle substances
may crumble or break
with very little force
13. Physical Properties
• Types of Physical Properties:
• Brittleness:
• how easily a substance breaks into
pieces
• Examples & Facts:
• many rocks & minerals
are brittle
• chalk is brittle because
it crumbles easily
14. Physical Properties
• Types of Physical Properties:
• Malleable:
• can be pounded into shapes
• Examples & Facts:
• aluminum is very malleable
• clay is also malleable
• substances that are malleable
are usually not very brittle
16. Physical Properties
• Types of Physical Properties:
• Ductile:
• can be pulled out into a long wire
• Examples & Facts:
• substances may be both malleable
& ductile
• copper is very malleable &
ductile
• substances that are ductile
are usually not very brittle
17. Physical Properties
• Types of Physical Properties:
• Conductive:
• can transmit heat and/or electricity
• Examples & Facts:
• a substance may conduct
heat, electricity, neither, or both
• most metals are good
conductors
18. Physical Properties
• Types of Physical Properties:
• Conductive:
• can transmit heat and/or
electricity
• Examples & Facts:
• pots & pans are made out of metals
that are good heat conductors
19. Physical Properties
• Types of Physical Properties:
• Soluble:
• can be dissolved in a liquid
• Examples & Facts:
• substances that are “watersoluble” will dissolve in water
• salt & sugar are soluble in
water
• substances that don’t dissolve
are “insoluble”
20. Overview of Physical &
Chemical properties
• http://youtu.be/oF0lN0jZYx0
• Physical and Chemical Properties
visual 2:30 min
• http://www.youtube.com/watch?
v=C4pQQQNwy30
• Chemistry - The Physical Properties
and Chemical Properties of Matter
− 6 min
21. Models are
representations of
objects or systems.
Models can be used for:
• Understanding something
• Predicting
• Picturing things in your mind
• Explain scientific theories
25. Limitation of Models
• They don’t act exactly like the
things they model or they may
not look like the things they
represent. Scale might be
incorrect.
• What is wrong with this model?
26. Extra information on
Chemical & Physical
•
http://education-portal.com/academy/lesson/matter-physical-and-chemicalproperties.html#transcript Just watch from 1:50 to 4:20 on video
•
http://www.youtube.com/watch?v=ritaljhhk7s Pharaoh Snake Reaction (Mercury(II)
thiocyanate decomposition) 3:11 min
•
http://www.youtube.com/watch?v=PQ6IsCbNZAQ Sulfuric Acid vs Sponge - Chemical
Reaction 1 min
