Transcript The Periodic Table

What is The Atomic
Number ?
The number of
Protons in an
ATOM.
Where is The Atomic
Number on the
periodic table ?
The number of
Protons in an
ATOM.
What is The
Atomic Mass ?
The average number of
Protons plus the
average number of
NEUTRONS in an ATOM.
Where is The Atomic
Mass on the
periodic table ?
The number of
Protons in an
ATOM.
The Periodic Table
How is the Periodic Table arranged?
a) The elements in the periodic table are
arranged by atomic number. Atomic
numbers increase from left to right.
b) It is also arranged by classes of elements –
metals, semimetals, nonmetals, and inert
gases.
What is a Period?
a) A period is a horizontal row of elements
that contains a series of different
elements.
b) The properties of the elements change
from left to right. Metals are on the left,
semimetals in the middle, nonmetals on
the right next to the inert gases.
c) There are 7 periods. Period 1 has 2
elements, periods 2 & 3 have 8, periods
4 & 5 have 16, period 6 has 32.
What is a group?
a) The vertical columns are called groups.
b) A group is also called a family.
c) Elements in a group have similar
characteristics. For example, elements in
group 1 react violently with water while
elements in group 2 react very slowly or
not at all.
d) There are 18 groups. Lanthanides and
actinides do not belong in these groups.
METALS
a) Metals are good conductors of electric
currents and heat
b) Some physical properties of metals are
malleability, ductility, and conductivity
c) Some chemical properties of metals are
reactivity and rust
d) They are alkali metals, alkaline earth metals,
transition metals, and lanthanides
What are Nonmetals?
a) Nonmetals lack most of the properties of
metals. They are the opposite of metals.
b) They are poor conductors of electric
current and heat.
c) Solid nonmetals are dull and brittle.
SEMI-METALS
a) Semi metals have some properties of metals and
nonmetals.
b) All semi-metals are solid at room temperature.
c) They are brittle, hard, and somewhat reactive.
d) THE MOST USEFUL PROPERTY OF SEMI-METALS IS
THEIR VARYING ABILLTIY TO CONDUCT ELECTRIC
CURRENT
What are Inert Gases?
a) All of the elements in group 18 are inert
gases or noble gases.
b) Inert gases do NOT ordinarily form
compounds.
c) INERT GASES TEND TO BE UNREACTIVE
d) They do not usually gain, lose, or share
electrons.
e) All the earth inert gases exist in earth ‘s
atmosphere.
The Noble Gases
How many letters are in an elements
name?
a) One or two.
b) The first letter is Capitalized.
c) The second letter is lower case.
In a compound / mixture, how can you
tell if it is a new element?
a) Elements start with a capital letter.
b) CO = Carbon & oxygen
c) Co = Cobalt
Homework:
a) Due Tuesday: Draw the bohr’s models and the
periodic plates of element #1 through #5
b) Due Wednesday: Draw the bohr’s models and the
periodic plates of element #6 through #10
c) Due Thursday: Draw the bohr’s models and the
periodic plates of element #11 through #15
d) Due Friday: Weekly Vocab: Element, Periodic
Table, Carbon, Inert Gas
Musical Chairs:
a) Number your paper #1 through #10
b) Pick a card.
c) Write the card letter and the information on your
own paper.
d) You will get 2 minutes to find a person who has a
card with information for your same element
AND write down their letter and information on
your paper.
e) Put the cards back in the correct bucket and start
again.