molly devine honors chemistry block 2. the table itself
TRANSCRIPT
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The Periodic TableMolly Devine
Honors ChemistryBlock 2
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Part One The Table Itself
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Your guide through the periodic table.Hello comrades! I am Dmitri Mendeleev and I created the first periodic table. I will guide you through the modern day periodic table
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The Creation of the Periodic TableThe Periodic Table was said to be have created Dmitri
Mendeleev in the mid-nineteenth century. He arranged the elements in order of increase of atomic mass. His table contained gaps in it. In these gaps, he predicted that elements would be found to fill in the blanks.
Did you see how I left a space between Calcium and Titanium? I knew an element would be found to fill it!
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The Periodic Table TodayToday the Periodic Table is arranged in order of
increasing atomic number. This order creates a repetition
of physical and chemical
properties are
explained through periodic law.
I also noticed this repeating
pattern.
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The Periodic LawAccording to the Periodic Law, if elements
are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties.
For example, all of the elements in group 7A have similar properties.
These properties determine if the element is a metal, non-metal, or metalloid.
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MetalsMetals are located to the left of the periodic
stair case(the line through the table).They normally are: malleable, ductile, and
good conductors of electricity.They also have a high luster. Most metals are solid at room temperature.
The exception to this rule is Mercury,
Some examples of metals are Zinc and Titanium because they are to the left of the table. The metals are outlined in red.
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Non-MetalsNon-metals are the opposites of metal and are
located to the right of the stair case. The exception is Hydrogen.
They have low luster and do not conduct electricity well.
Most are solids at room temperature, but some are gases.
Sulfur, Phosphorus, and Iodine are examples of non-metals.
Did you know non-metals are not ductile or malleable?
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MetalloidsMetalloids have properties of both metals
and non-metals.Under some conditions it will act like a metal,
and under others its will act like a non-metal. An example of a metalloid is silicon. It acts as
a non-metal when it is cooled(it is brittle) and acts a metal when heated (it is malleable).
The metalloids are purple
outlined with lime green.
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Part Two Groups and Periods
on the Periodic Table
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How the Table is Divided The Columns of the Periodic Table are called
groups and the rows are called periods. Each element is categorized by their location
on the table and is labeled as a representative element, a noble gas, a transition metal, or an inner transition metal.
The red lines indicate groupsand the purple lines indicate periods.
That’s a novel idea!
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The Representative Elements -The Representative Elements are found in Groups 1A-7A.-They are named such because they display a range of properties that represent the entire table. -The Outer Sublevel is S or P. -Examples of Representative Elements are Hydrogen, Oxygen, and Calcium.
The representative elements are outlined in red.
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The Noble GasesThe Nobel Gases are found in Group 8-A of
the Periodic Table.They are also known as Inert Gases because
they rarely form bonds with other elements; this is due to their full out principal energy levels.
Their orbital configurations have full s and p
sublevels. - The
Nobel Gases are
indicated by the
green highlight.
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The Transition MetalsAre located in the
middle part of the periodic table.
The elements highlighted in magenta are transition metals.
The outer sublevel of these elements are d.
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Inner Transition MetalsThese elements are
removed from the table and are placed at the bottom.
Their outer sublevel is the f sublevel.
The Inner Transition Metals are highlighted
in turquoise.
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Now that you Know the Table….
Let’s move on to the Trends!!!!!