Transcript Periodic Table - Woodhey High School

What is it?
• The periodic table is a table of
elements.
• It contains all the basic information
that scientists need to know about
the different elements.
Don’t panic!
The periodic table isn’t as
complicated and boring as it looks!
Hopefully, this presentation will help
you realise what all the strange
symbols and numbers are all about
and why they are there! It is
actually quite interesting!!!
Groups and Periods
• Groups are the vertical columns in the
periodic table: 1,2,3,4,5,6,7,0
• Periods are the horizontal rows in the
periodic table: 1,2,3,4,5,6,7
Find a copy of the periodic table! The information that this
presentation is telling you will become so much more
understandable and easier to follow if you have one!
With groups and periods in mind….
Finding where elements
are…
You will need your Periodic table in front of you
for this.
If I said…
Period 2, Group 1, that would be the
element… Li – Lithium.
Period 5, Group 7, that would be the
element…I – Iodine
Period 7, Group 2, that would be the
element… Ra - Radium
Transition Metals.
These guys are found in the middle block of
elements on the periodic table…
They do not have groups, but they do have
periods.
Transition Metals are generally very good
conductors of heat and electricity.
They are hard and tough, but can be easily
bent (malleable).
Atomic Number & Atomic
Mass
The atomic number is the number of
protons and electrons in the nucleus of
an atom. This number can be found on
the periodic table, and is the number
below an element.
The atomic mass is the number of protons
and neutrons in the nucleus of an atom.
This number can be found on the
periodic table, and is the number above
an element.
Symbols & their properties. –
common ones you need to know!
• Cu – Copper – A ductile, malleable,
reddish – brown, metallic element. Used as
an electrical and thermal conductor.
Atomic Number: 29. Atomic Mass: 64.
• Mg – Magnesium – a moderately hard,
metallic element, in powder or ribbon form
burns with a brilliant white. Atomic Number:
12. Atomic Mass: 24.
• Ca – Calcium – A hard, metallic element. It
occurs naturally in approximately 3% of the
earths crust, limestone, gypsum and
fluorite. Atomic Number: 20. Atomic Mass:
40.
• K – Potassium - a soft, silver-white, alkali metal
element. Potassium is one of the essential
elements for organisms to survive. Atomic
number: 19. Atomic Mass: 39.
•Na – Sodium - A light, metallic element, that is
highly reactive, and almost explodes if put in
water. It is one of the most common metals on
earth. Atomic Number: 11. Atomic Mass: 23.
• Fe - Iron - A heavy, ductile metallic element that
easily rusts. Commonly used in construction.
Atomic Number: 26. Atomic Mass: 56.
By now you should have a
general understanding on the
basics of the periodic table;
• How to find an element using groups and
periods.
• What the numbers below and above an
element are all about.
…
So…
How about a little test?!
Let’s say……
10 quick summary questions?!
I thought u would love that idea!
P.P.P
Grab….
•Pen
•Paper
•Periodic Table
Lets begin!!
Here we go…
1.
2.
3.
4.
5.
6.
Which element is found in Group 1, Period 4?
Look at the block of transition metals on the
periodic table.
I am in period 4, and
have an atomic number of 29 and an atomic
mass of 63.5…what am I?
Which element is found in Group 2, Period 7?
Group 3, period 6?
Group 4 period 2?
A transition metal that rusts easily, is ductile
and used commonly in construction Atomic
Number:26….Atomic Mass:56?
7. What does the symbol Mg represent in the
periodic table?
8. What is the Atomic number of Mg?
9. What symbol represents Calcium in the periodic
table?
10. What does the symbol Na represent? & what is
it’s atomic number and atomic mass?
Answers
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
K – Potassium is found in Group 1 Period 4.
Cu – Copper
Ra – Radium
TI – Thallium
C – Carbon
Fe – Iron
Magnesium
12
Ca
Sodium. Atomic Number: 11. Atomic Mass:23
How did you do?
1 – 3. You need some serious help with this dude!!
Try another method of revising this topic,
because this one isn’t working for you.
3-5. Go through this presentation again. Read it
more carefully. Use your class notes in your book
to help you.
5- 9. Well done! You are getting there! Try going
through the presentation again. Make notes on
things you are struggling with.
10 – all correct. Yeahhh man!! Excellent!! You’re a
Periodic table master!