Transcript Physical Properties of Metals

Reporting
Category #1
Matter & Energy
Physical & Chemical
Properties
• Physical properties are properties that
do not change the chemical nature of
matter.
– Shape, smell, and density
– Phase changes: water turning to water
vapor
Physical & Chemical
Properties
• Chemical properties are properties that
do change the chemical nature of
matter.
– Color change, heat of combustion,
reactivity with water and pH.
– Iron Rusting
Physical & Chemical
Properties
• Any substance that contains
only one kind of an atom is
known as an element.
• Each element is represented by
a unique symbol. The symbol for
each element can be found on
the periodic table of elements.
• Ex: aluminum (Al), hydrogen
(H), calcium (Ca) , mercury (Hg).
Categories
• 3 Categories in the Periodic Table
• Metals
• Nonmetals
• Metalloids
Metals
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Physical Properties of Metals:
Luster (shininess)
Good conductors of heat and electricity
Chemical Properties of Metals:
Easily lose electrons
Corrode easily. Corrosion is a gradual wearing
away. (Example: silver tarnishing and iron
rusting)
Nonmetals
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Physical Properties of Nonmetals:
No luster (dull appearance)
Poor conductor of heat and electricity
Low melting point
Metalloids
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Physical Properties of Metalloids:
Solids
Can be shiny or dull
Conduct heat and electricity better
than nonmetals but not as well as metals
Physical & Chemical
Properties
• A compound is a substance
formed when two or more
elements are chemically joined.
• Water, salt, and sugar are
examples of compounds.
• Letters, numbers, and symbols
are used to represent elements
and the number of elements in
each compound.
• Example: alcohol (C2H5OH),
water (H2O),
Mixtures
• Mixtures
• Homogeneous mixtures are ones
that have consistent properties.
Think of them like a blended
shake, which has the fruit cut so
small and mixed up so that the
shake has a specific consistency.
• Heterogeneous mixtures have
inconsistent and non-uniform
composition, like a salad- it’s easy
to see and separate the different
vegetables.
Atoms
• Atom
– Tiny particles that
compose most forms
of matter
– Simplest unit of an
element
– Smallest unit of
matter
Atoms
Atoms
• Atoms are made up of three subatomic
particles:
– Protons – positive charge located in the
nucleus
– Electrons – negative charge orbits around
the nucleus
– Neutrons – neutral charge located in the
nucleus
APE MAN
A=P=E M-A=N
A = Atomic mass#
P = # of Protons
E = # of Electrons
M = Mass #
A = Atomic #
N = # of Neutrons
Reading the
Periodic Table
Atomic Mass
Atomic Number
Name
Symbol
Chemical Equation
Coefficient
2 H2O 2
2 H2O + O2
Word Bank
Coefficient
Product
Reactant
Subscript
Yield
Compound vs. Element
3C6H12O6
# of Atoms
C = _____
Compound
H = _____
Element
O = _____
Balanced or Unbalanced
Na + O2
Na2O
Na =
Na =
O
O
=
=
Organic or Inorganic
Na + O2
Na2O
Na =
Na =
O
O
=
=
Matter & Energy
Matter & Energy