Elements are pure substances made up of atoms that cannot be broken down These Elements are categorized by characteristics as Metals Semi Metals or Metalloids NonMetals Gases What are atoms ID: 784078
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Slide1
Periodic Table – Elements
Elements are pure substances made up of atoms that cannot be broken down. These Elements are categorized by characteristics as: MetalsSemi Metals or Metalloids Non-Metals – Gases
What are atoms?
Slide2Slide3Characteristics of Metals
Metals have few electrons in their outer energy levelMetals are solid at room temperature except Mercury which is a liquid
Slide4Characteristics of Metals cont. . .
Metals are good conductors of heat and electricity
Metals are malleable
which means they
can be flattened
into thin sheets
Metals are
ductile
which means they can be
drawn into thin wires
Metals are shiny
https://
www.youtube.com/watch?v=c382ziUpbbc
https://www.youtube.com/watch?v=kMR5KbNZ7b8
Slide5GOLD
Zinc
Copper
I can see that ____________ is a metal
Because it has ____________ properties.
Gold is a metal because it is __________
Which is a property of Metals.
Zinc is a metal because it is _________
Which is a property of metals.
Copper is a metal because it is ________
Which is a property of metals
Slide6Characteristics of nonmetals
Nonmetals have almost a complete set of electrons in
their
outer energy level
Nonmetals are mostly gases at room
temperature
Nonmetals are not good conductors of heat & electricity
Nonmetals are not malleable
Nonmetals are not ductile – they are brittle and will break or shatter when hit with a hammer
Nonmetals are not
shiny
Nonmetals do not have the characteristics of metals
Slide7Elemental
Oxygen
Highly explosive !
https
://
www.youtube.com/watch?v=R0lWI-bnJVA
Slide8Characteristics of Semi Metals
Metalloids have a ½ complete set of electrons in their outer energy levelMetalloids have some properties of metals and
some properties of nonmetals
.
Slide9Tellurium-shiny but
brittleSilicon-semiconductor Boron-hard but brittle and a good conductor of electricity
Slide10Nobel gases
Noble Gases have a complete set of electrons in their
outer energy level
– all but Helium have 8. Helium has 2.
Noble Gases
are gases at room temperature
Noble Gases are nonmetals
Noble Gases
are colorless
Noble Gases
are odorless
Noble Gases
are unreactive
Noble Gases are found in very small amounts on Earth
Slide11Slide12Is this element Metal, Non-metal or Metalloid (Semimetal)
?Aluminum
Tellurium
Physical Properties:
Conductor
Shiny Luster
Malleable
Non-Magnetic
Not Ductile
Solid at room temperature
Physical Properties:
Semiconductor
Shiny Luster
BrittleNon Magnetic Not DuctileSolid at Room temperature
Slide13Is this element Metal, Non-metal or Metalloid (Semimetal) ?
Copper Germanium
Physical Properties:
Conductor
Orange Luster
Malleable
Not Magnetic
Ductile
Solid at room Temperature
Physical Properties:
Semiconductor
Shiny Luster
Brittle
Not MagneticNot Ductile Solid at Room temperature
Slide14Sulfer
ChlorineNo conductionYellow ColorBrittleNon Magnetic
Not Ductile
Solid @ room temperature
No Conduction
Yellow Green Color
No Brittle / Malleable
Not Magnetic
Not Ductile
Gas at room Temp
Is this element Metal, Non-metal or Metalloid (Semimetal) ?
Slide15Molecules and Compounds
Monday October 5, 2015How are compounds formed?
Slide16What is a molecule?
A molecule is a combination of 2+ atoms that make a larger particle.
It is
held together by chemical bonds.
The
atoms might be the same or they could be different.
A molecule is
not always a compound.
Slide17What is a compound
?A compound is a substance that is made up of 2 or more
DIFFERENT
elements
Compounds are ALWAYS
a molecule.
Slide18Compound
Elementproperty
Element
property
Common Compound
Property
H
2
0
H= gas
O=
gas
liquid
NaClNa=dangerous metalCl=dangerous
nonmetalNaCl=table salt(eat it!)
Properties of the compound are different than the properties of the elements that make them up.
Slide19For
a compound to be formed a chemical reaction must take place
. This is when
2 elements or molecules are rearranged
through a chemical process
to form
something
NEW and DIFFERENT
!
Slide20Mixtures
A mixture refers to the physical combination of two or more molecules.
The air we breath is a mixture.
Slide21Molecule
Molecule
Element
Atoms
Made up of
multiple
molecules
Slide221
2
3
4
5
Element Present
Is it a Molecule
, Compound Molecule 0r Element
1.)
2)
3)
4)
5)
Nitrogen (N)
Oxygen (O)
Molecule
Neon
Element
Carbon Dioxide
Argon
Compound Molecule
Element
Molecule
Compound Molecule
Sulfer
Dioxide
Hydrogen
Slide23What Element (s) is/are
Present Is it a Molecule, Compound Molecule , or
Element
1
.)
2.)
3.)
4.)
5)
6.)
7)
8)
9)
10)
1
2
3
4
5
6
7
8
9
10
Ozone (O
3)
Methane CH
4
Slide24Write Example in the bubble map of each class of substances.