physical and chemical properties of matter objective: students will classify matter by physical and...
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Physical and Chemical Properties of Matter
Objective: Students will classify matter by physical and chemical properties and identify changes in matter.
Matter is EVERYWHERE and is found in different forms as solids, liquids and gases.
When we examine a substance, we are interested in its properties. A property is
something about a substance that can help to define it.
Properties can be
both physical and
chemical.
Properties of matter are both
PHYSICAL and CHEMICAL
PHYSICAL PROPERTIES
Physical properties are thing about matter that can be observed without changing the substance into a different substance. There are many different physical properties that can be observed.
H2O
Examples of Physical Properties
Color – Gold
GOLD
Au
Density- 19.32 g/cm3
Metal- STATE (solid, liquid or gas)
GOLD
PHYSICAL PROPERTIES:
PHYSICAL PROPERTIES:
Boiling point- 2807 ° F
Melting point- 1947° F
GOLD
Malleable- Bendable-forms into thin sheet
GOLD
Ductile- stretched into wire
Conductivity- Conducts heat and electricity
PHYSICAL PROPERTIES:
Soluble: to dissolve
(without fizzing or bubbling!)
PHYSICAL PROPERTIES:
Examples of Physical Changes
Size change
Shape change
Examples of Physical ChangesState change Solid liquid gas
When a physical change occurs, the chemical composition of that substance DOES NOT CHANGE?
THE MATTER basically
STAYS THE SAME
Au
Au
Au
CHEMICAL PROPERTIES
Chemical properties are characteristics of a substance that are observed when it REACTS or changes
to produce different
substances.
Iron + Oxygen = Rust
4Fe + 3O2 = 2Fe2O3
Examples of Chemical Properties
Reaction to……..
OXYGEN
WATER
CHEMICALS
REACTION TO……..
LIGHT
REACTION TO ……
Heat Flammability
When matter undergoes a CHEMICAL CHANGE the atoms in the original substance are rearranged and produce
new substances that
are structurally different
than the original matter.
Iron + Oxygen = Rust
4Fe + 3O2 = 2Fe2O3
Signs that matter is undergoing
a chemical change:
FIZZING and BUBBLING
Giving off HEAT/SMOKE
Color CHANGE
• Smell Change
When matter undergoes a CHEMICAL CHANGE, the atoms in the original substance are rearranged and produce new substances that are structurally different than the original matter.
COPPER
***MATTER FORMS A
_________________ SUBSTANCETOTALLY NEW
ReviewPhysical or Chemical Properties of Matter
WARM-UP
Directions: *Number your paper from 1 to 10. *For each item, label it as a physical property (P) or a chemical property (C).
Physical or Chemical Property?1. Flammability
Physical or Chemical Property?2. Malleability
Physical or Chemical Property?3. Melting and Boiling Point
Physical or Chemical Property?4. Oxidation (Rusting)
Physical or Chemical Property?5. Conductivity
Physical or Chemical Property?6. Dissolving without temperature
change. No bubbling or Fizzing…
Physical or Chemical Property?7. Dissolving with a temperature change.
Fizzing and bubbling….smell release.
Chemical or Physical Property?8. Oxidation (Tarnishing)
No Tarnish
Tarnished
Physical or Chemical Property?9. A totally new substance is formed.
Physical or Chemical Property?10. The substance remains the SAME…..
Now….Check your answers!
Chemical Property
1. Flammability
Physical Property
2. Malleability
Physical Property
3. Melting and Boiling Point
Chemical Property
4. Oxidation (Rusting)
Physical Property
5. Conductivity
Physical Property
6. Dissolving without temperature change. No bubbling or Fizzing…
Chemical Property
7. Dissolving with a temperature change.
Fizzing and bubbling….smell release.
8. Oxidation (Tarnishing)
No Tarnish
Tarnished
Chemical Property
When a physical change occurs, the chemical composition of that substance DOES NOT CHANGE!
THE MATTER STAYS THE SAME!
H2O
Chemical Property
9. A totally new substance is formed.
Physical Property
10. The substance remains the SAME…..