SIMULATION OF ELEMENTS IN PERIODIC TABLE

CLICK THIS LINK TO EXPERIENCE SIMULATION OF PERIODIC TABLE OF ELEMENTS..

VERY INTERESTING SIMULATION... EXPLORE!!!!!!!

SYNGENTA PERIODIC TABLE

TRANSITION ELEMENTS

1. Transition elements can form coloured compounds

2.  Transition elements have varying oxidation number

• Iron has two common oxidation states (+2 and +3) in, for example, Fe²⁺and Fe³⁺. It also has a less common +6 oxidation state in the ferrate(VI) ion, FeO₄^2-.
• Manganese has a very wide range of oxidation states in its compounds. For example:

+2	in Mn2+
+3	in Mn2O3
+4	in MnO2
+6	in MnO42-
+7	in MnO4-

3.  Transition elements can form complex ions

• A complex ion has a metal ion at its centre with a number of other molecules or ions surrounding it. 
• Some examples of complex ions formed by transition metals
  

  
  

  [Fe(H₂O)₆]²⁺,   [Co(NH₃)₆]²⁺,   [Cr(OH)₆]^3- ,  [CuCl₄]^2-

4.  Transition elements can act as catalysts

• Iron in the Haber Process
  The Haber Process combines hydrogen and nitrogen to make ammonia using an iron catalyst.
                            

• Vanadium(V) oxide in the Contact Process
  At the heart of the Contact Process is a reaction which converts sulphur dioxide into sulphur trioxide. Sulphur dioxide gas is passed together with air (as a source of oxygen) over a solid vanadium(V) oxide catalyst.
  
                 

• Nickel in the hydrogenation of C=C bonds
  This reaction is at the heart of the manufacture of margarine from vegetable oils.
  However, the simplest example is the reaction between ethene and hydrogen in the presence of a nickel catalyst.
  
                          

REACTIVITY OF GROUP 1 ELEMENTS

HERE'S THE REACTIVITY OF GROUP 1 ELEMENTS OF LITHIUM, SODIUM AND POTASSIUM!!!!!! MAYBE THIS CAN HELP YOU TO ANSWER EXERCISE QUESTION ....

EXERCISE

LET'S TRY TO DO THIS EXERCISE..... TEST YOUR KNOWLEDGE!!!!!

EXERCISE

QUIZZES AGAIN...

HI ALL... YEAY.. LET'S REVISE GROUP 18 ELEMENTS....

try to work out this quiz... very easy!!!!!

Solving the puzzle of the periodic table - Eric Rosado

How did the periodic table of elements revolutionize our understanding of the world? What scientists contributed to the table we have today? Eric Rosado discusses the key people and discoveries that have molded our understanding of chemistry today.

PUZZLE OF PERIODIC TABLE

WATCH!!!

THINK!!!

DIG DEEPER!!!!

TRANSITION ELEMENTS

HI ALL...

WHAT DO YOU KNOW ABOUT TRANSITION ELEMENTS????

TRANSITION ELEMENTS ARE WIDELY USED IN DIFFERENT FIELDS IN OUR DAILY LIVES. THESE INCLUDE SCANDIUM, TUNGSTEN, IRON, NICKEL, COPPER AND CADMIUM. 

WHERE IS THE POSITION OF TRANSITION ELEMENTS IN THE PERIODIC TABLE????

TRANSITION ELEMENTS EXHIBITS THREE SPECIAL CHARACTERISTICS :

• TRANSITION ELEMENTS SHOW DIFFERENT OXIDATION NUMBERS IN THEIR COMPOUNDS.
• TRANSITION ELEMENTS FORM COLOURED IONS OR COMPOUNDS.
• TRANSITION ELEMENTS AND THEIR COMPOUNDS ARE USEFUL CATALYSTS.

PRECIOUS STONES EXIST NATURALLY IN DIFFERENT COLOURS. WOW, SO NICE!!!!!

LET'S DISCOVER MORE ON TRANSITION ELEMENTS

PROPERTIES OF GROUP 17 ELEMENTS

Physical Properties of halogens

1. Are poisonous
2. Brittle and crumbly in their solid form
3. Do not conduct electricity
4. Form diatomic molecules (containing two atoms). For example Fl2.
5. Form colored vapors.

 Chemical Properties of halogens

1. The halogens are among the most reactive elements in the Periodic Table.
2. They all have seven valence electrons – seven electrons in their outer-shell.
3. They react with metals to form compounds called halides.

Reactivity increases as you go up Group 17

When halogens react with metals, the halogen atoms gain an electron. The smaller the atom the easier it is to attract the electron and the more reactive the element. (This is opposite of the trend in Group 1 where the larger the atom the easier it is to lose an electron.)

LET'S DISCOVER THE REACTIVITY OF GROUP 17 ELEMENTS

1. In nature, all halogens exist as diatomic molecules. They are written as F₂, Cl₂, Br₂, I₂ and As₂.
2. Most of the halogens exist in the nature as halide salts.
3. Halide is the name given to the ion of halogens. Table below shows the corresponding halide of the halogen.

Halogen	Halide
Fluorine	Fluoride
Chlorine	CHloride
Bromine	Bromide
Iodine	Iodide

NOW, let's discover how group 17 elements react. DON'T forget to relate with the atomic mass and electron arrangement of each elements to compare the reactivity between group 17 elements... HAPPY WATCHING!!!!

HALOGENS

HI ALL...

GROUP 17 ELEMENTS ARE ALSO KNOWN AS HALOGENS. GROUP 17 ELEMENTS ARE POISONOUS. 

IN GENERAL, HALOGENS HAVE LOW MELTING AND BOILING POINTS BECAUSE THEIR MOLECULES ARE ATTRACTED TO EACH OTHER BY WEAK FORCES. 

WHEN GOING DOWN THE GROUP, THE PHYSICAL STATE OF HALOGENS AT ROOM TEMPERATURE CHANGES FROM GAS TO LIQUID THEN TO SOLID. 

FLOURINE IS A PALE YELLOW GAS

CHLORINE IS A GREENISH YELLOW GAS

BROMINE IS A REDDISH BROWN LIQUID

IODINE IS A PURPLISH BLACK SOLID

DO YOU NOTICE THAT THE COLOUR OF HALOGENS ALSO BECOMES DARKER WHEN GOING DOWN GROUP 17?

WHY IS THIS SO?????

Learn more of PROPERTIES OF GROUP 17 ELEMENTS  by clicking to this CHEMWIKI

SCIENTISTS BEHIND THE DEVELOPMENT OF PERIODIC TABLE

Hi all.  

We know what the periodic table looks like, but where did it come from? Whose idea was it to arrange the elements this way? 

Here's are all scientist who contributes to the development of periodic table... happy reading,students!!!!!!

read more through this link :   SCIENCE LEARNING

PROJECT BASED LEARNING TASK

ELEMENT BROCHURE

You are to make an attractive eye catching brochure on a regular sized 8 ½” x 11” paper. The brochure must be tri-fold or bi-fold and must look like something you would like to read if you just happened to see it laying around. Research the element you were assigned. This brochure must include the following information:

1. Name of element and how it got its name. 

2. Symbol, Atomic Number and Atomic Mass 

3. Where it’s found and in what form (compound). 

4. Physical facts: 

a. Melting point 

b. Boiling point 

c. Density 

d. Abundance in the earth’s crust 

5. Uses 

6. Source(s) of your information

Element Choices:
 

Hydrogen Boron Fluorine Aluminum Chlorine Platinum Arsenic

Helium Carbon Neon Silicon Silver Lead Krypton

Lithium Nitrogen Sodium Phosphorus Mercury Nickel Tin

Berilium Oxygen Magnesium Sulfur Gold Copper Chromium

Example for Gold    
  Front:
 
 Back:
YOU CAN PRESENT YOUR BROCHURE TO THE CLASS.... 

QUIZZES

HI....

Now,after you have learnt about the Group 1 elements which also known as H>A>L>O>G>E>N, why not test yourself with this short quizzes.. time allocates for this activity is 20 minutes!!!!!

PAPER 3 HOTS QUESTION

HI ALL...

Here is one of the paper 3 SPM Chemistry question from chapter PERIODIC TABLE... 

lets try to do this question. You can refer to any reference book or you can access to internet to complete your task.. sample answers will come very soon... GOOD LUCK!!!!!

VIDEO ON REACTION OF GROUP 1 ELEMENTS WITH WATER

Hi... Lithium , Sodium and Potassium have similar chemical properties but differ in reactivity.

Observe the video below to study what happen when alkali metals react with water. 

ADVANTAGE OF GROUPING

Hi all...  

What is the basic principle applied in arranging the elements in the Periodic Table today ?

• Elements in the Periodic Table are arranged in an increasing order of proton number, ranging from 1 to 113. 
• Elements with similar chemical properties are placed in the same vertical column. 
• Each vertical column of elements is called a GROUP. There are Group 1 to Group 18.
• Each horizontal rows of elements is called a PERIOD. There are Period 1 to Period 7.

credit picture to : Cartoon Related To Periodic Table

Review the simulation below.. Please click the picture to explore. 

INSTRUCTION : Check the appropriate controls to understand the properties of various elements. You can also highlight the metals based on specific property.

WHAT ARE THE ELEMENTS OF ALKALI METALS

Alkali metals are the chemical elements found in Group 1 of the periodic table. The alkali metals include: Lithium (Li), Sodium (Na),  Potassium (K), Rubidium (RB), Cesium (Cs), and Francium (Fr).  

Why HYDROGEN is not included in alkali metals although it appears to be listed in Group 1? 

Group 1 elements are soft metals with low densities  and low melting points as compared to other metals such as iron and copper. they have silvery and shiny surfaces. they are also good conductors of heat and electricity. 

When going down the group, the hardness, melting point and boiling point decrease. 

When going down the group, the atomic size increases. 

MORE INFO REGARDING GROUP 1 ELEMENTS

WHY GROUP 18 ELEMENTS ARE KNOWN AS NOBEL GASES?

The Noble Gases (Group 18) are located in the far right of the periodic table. These elements were previously referred to as the inert gases due to their one important chemical property: they are extremely nonreactive due to their filled valence shell. 

 LET'S REVIEW THE VIDEO BELOW TO KNOW ABOUT THE GROUP 18 ELEMENTS.. 

SONG:THEY MIGHT BE GIANT, MEET THE ELEMENTS

LETS SING THIS SONG TOGETHER!!!

WHAT IS THE PERIODIC TABLE ALL ABOUT

The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configuration (electron shell model), and recurring chemical properties. Elements are presented in order of increasing atomic number (the number of protons in the nucleus). The standard form of the table consists of a grid of elements laid out in 18 columns and 7 rows. The rows of the table are called periods; the columns are called groups. 

Let's review the properties of ALL ELEMENTS in the Periodic Table!!!!!!!!

Periodic Table of Elements

NOW LET'S BUILD THE ELEMENTS...