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?
Characteristics of Metals Metals have few electrons in their outer
energy levelMetals are solid at room temperature
except Mercury which is a liquid
Characteristics of Metals cont. . .Metals are good conductors of heat and electricityMetals are malleable which means they can be
flattened into thin sheetsMetals are ductile which means they can be drawn
into thin wiresMetals are shiny
https://www.youtube.com/watch?v=c382ziUpbbchttps://www.youtube.com/watch?v=kMR5KbNZ7b8
GOLD Zinc
Copper
I can see that ____________ is a metalBecause 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
Characteristics of nonmetals Nonmetals have almost a complete set of electrons
in their outer energy levelNonmetals are mostly gases at room
temperatureNonmetals are not good conductors of heat &
electricityNonmetals are not malleableNonmetals are not ductile – they are brittle and will
break or shatter when hit with a hammerNonmetals are not shinyNonmetals do not have the characteristics of
metals
ElementalOxygenHighly explosive !
https://www.youtube.com/watch?v=R0lWI-bnJVA
Characteristics 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.
Tellurium-shiny but brittle
Silicon-semiconductor
Boron-hard but brittle and a good conductor of electricity
Nobel gasesNoble 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 temperatureNoble Gases are nonmetalsNoble Gases are colorlessNoble Gases are odorlessNoble Gases are unreactiveNoble Gases are found in very small amounts
on Earth
Is this element Metal, Non-metal or Metalloid (Semimetal) ?Aluminum Tellurium Physical Properties: Conductor Shiny Luster Malleable Non-MagneticNot Ductile Solid at room
temperature
Physical Properties: SemiconductorShiny LusterBrittleNon Magnetic Not DuctileSolid at Room
temperature
Is this element Metal, Non-metal or Metalloid (Semimetal) ?Copper Germanium
Physical Properties: ConductorOrange LusterMalleableNot MagneticDuctileSolid at room
Temperature
Physical Properties: SemiconductorShiny Luster Brittle Not MagneticNot Ductile Solid at Room
temperature
Sulfer ChlorineNo conductionYellow ColorBrittleNon MagneticNot DuctileSolid @ room
temperature
No ConductionYellow Green ColorNo Brittle / MalleableNot MagneticNot Ductile Gas at room Temp
Is this element Metal, Non-metal or Metalloid (Semimetal) ?
Molecules and Compounds
Monday October 5, 2015How are compounds formed?
What 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.
What is a compound?A compound is a substance that is made up of 2 or more DIFFERENT elements
Compounds are ALWAYS a molecule.
Compound Elementproperty
Elementproperty
Common CompoundProperty
H20H= gas O= gas liquid
NaCl Na=dangerous metal
Cl=dangerous nonmetal
NaCl=table salt(eat it!)
Properties of the compound are different than the properties of the elements that make them up.
For 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!
MixturesA mixture refers to the physical combination
of two or more molecules.
The air we breath is a mixture.
Molecule Molecule
Element
Atoms
Made up of multiple molecules
1 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 DioxideArgon
Compound MoleculeElement
Molecule
Compound MoleculeSulfer Dioxide
Hydrogen
What 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 (O3)
Methane CH4
Write Example in the bubble map of each class of substances.