periodic table – elements elements are pure substances made up of atoms that cannot be broken...

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.