Transcript Chem Master SS

He was a German Chemist.
 In 1810, he was eventually the professor at the
University of Jena.
 He discovered similar triads of elements in 1829.
 In 1817, He discovered the group of elements.
He found out that Lithium, Sodium and
Potassium had similarity.

Look
At
This
Sexy
Beast!!
Triads are some of the first families
of elements with similar chemical
properties.
 There were three in the group.
 Their appearance and reactions of
the elements were similar to each
other.

Alkali formers
Li
7
Na
23
K
39
Salt formers
Cl
35.5
Br
80
I
127
He began working on the Periodic Table in
the late 1860s.
 He arranged 63 elements known by there
atomic weight.
 He also organized them into similar
properties.
 This is his first sketch of the Periodic
Table.

By: Morgan Williams
&
Brooke McKenna
http://www.dayah.com/periodic/
A period is a horizontal column on the periodic table of
elements.
 There are 7 periods on the periodic table.
 And a group is a column that is vertical.
 There and 18 groups on the periodic table.

Groups are numbered in 2 ways, one way is 1-18 which includes
all elements even the transition metals.
 The second way is 1A-8A they’re known as the main groups.

Lanthanides- inner transition elements with atomic numbers 58-71, lanthanides
are located in the top row of the f block.
 Actinides- inner transition elements with the atomic numbers from 90-103; all
are radioactive, actinides are located in the bottom row of the f block.
 Transition elements- elements in groups 3-12 all are metals, transition elements
are located in the D-block.

Solids- definite shape and volume
 Liquid- no definite shape, but definite volume
 Gas- no definite shape or volume

There are 2 liquids
 There are 11 gases
 Noble gases are generally located on the right side
 The rest are solids

http://www.dayah.com/periodic/
By: Mike Ross, Shelby Fausey, and Kaitlyn Carl
Periodic Table
Definitions
Metal- Element that has luster, conducts heat
and electricity and usually bends without
breaking.
 Non-metal- Does not conduct heat or
electricity. Brittle when solid. Many are gases
at room temperature.
 Metalloid- Element with some physically &
chemically properties of metals and other
properties of non-metals.

Metal
Metals are located on the left side of the black
outlined step looking line.
 There are 61 metals on the periodic table.
 Examples of metal are silver, copper, iron, and
cobalt. They are used for machinery, coins,
and automobiles.

Non-metals
Non-metals are located on the right side of
the black line.
 There are 18 non-metals on the periodic
table
 Sulfur, Chlorine, Iodine
 most are gases, one is a liquid (Bromine)
and the rest are solid.

Metalloids
Metalloids are located on the either side of the
black line.
 There are 7 metalloids on the periodic table.
 Boron, Silicon, and Germanium are examples
of metalloids
 Metalloids are used mostly in transistors.

Group 1A
Group 1A is the Alkali Metals
 Alkali Metals are soft and usually have low
melting points and densities. They are also
powerful reducing agents.
 All react violently with water, and tarnish rapidly
even in dry air. They are never uncombined in
nature.
 Alkali metals are sometimes used in explosives.

Group 2A
Group 2A elements are the Alkaline Earth Metals.
 These metals are silvery colored, soft, and react
readily with halogens. They then form ionic salts.
 Magnesium and calcium are essential elements
for all living organisms.

Transition Elements
These elements are in groups 3-12 , all are
metals.
 Some transition elements are Scandium,
Titanium, and Vanadium.
 They are also known as transition metals.
They are very hard and have high melting
points and boiling points.
 Transition elements are used for structural
materials, copper pipes, and coins.

By: Mike Ross, Shelby Fausey, and Kaitlyn Carl
Periodic Table
Definitions
Metal- Element that has luster, conducts heat
and electricity and usually bends without
breaking.
 Non-metal- Does not conduct heat or
electricity. Brittle when solid. Many are gases
at room temperature.
 Metalloid- Element with some physically &
chemically properties of metals and other
properties of non-metals.

Metal
Metals are located on the left side of the black
outlined step looking line.
 There are 61 metals on the periodic table.
 Examples of metal are silver, copper, iron, and
cobalt. They are used for machinery, coins,
and automobiles.

Non-metals
Non-metals are located on the right side of
the black line.
 There are 18 non-metals on the periodic
table
 Sulfur, Chlorine, Iodine
 most are gases, one is a liquid (Bromine)
and the rest are solid.

Metalloids
Metalloids are located on the either side of the
black line.
 There are 7 metalloids on the periodic table.
 Boron, Silicon, and Germanium are examples
of metalloids
 Metalloids are used mostly in transistors.

Group 1A
Group 1A is the Alkali Metals
 Alkali Metals are soft and usually have low
melting points and densities. They are also
powerful reducing agents.
 All react violently with water, and tarnish rapidly
even in dry air. They are never uncombined in
nature.
 Alkali metals are sometimes used in explosives.

Group 2A
Group 2A elements are the Alkaline Earth
Metals.
 These metals are silvery colored, soft, and
react readily with halogens. They then form
ionic salts.
 Magnesium and calcium are essential
elements for all living organisms.

Transition Elements
These elements are in groups 3-12 , all are
metals.
 Some transition elements are Scandium,
Titanium, and Vanadium.
 They are also known as transition metals.
They are very hard and have high melting
points and boiling points.
 Transition elements are used for structural
materials, copper pipes, and coins.

By Casey Higgins, Shanee Hay, Matthew Hayes
Reactivity
The tendency of a substance to undergo
chemical reaction, either by itself or with
other materials, and to release energy
 Reactivity increases when you go down
the group and decreases when you go
left to right.

Density
•
•
•
Mass per unit volume of a substance.
D=mass/volume
Density increases as you go down the
group.
Atomic radius
The size of an atom.
 Moving left to right Atomic radius
Decreases and moving top to bottom
atomic radius increases .

Ionized energy
Energy required to remove an electron
from a specific atom.
 moving left to right ionized energy
increases and moving top to bottom
ionized energy decreases.

Electronegativity
A chemical property that describes the
ability of an atom to attract electrons
towards itself in covalent bond.
 Moving left to right electronegativity
increases and moving top to bottom
electronegativity decreases.
