WELCOMEWELCOME

Archana.V GArchana.V GPhysical SciencePhysical Science

Reg: No: 13366003Reg: No: 13366003

Introduction to Introduction to the Periodic Tablethe Periodic Table

Atomic Number ● Symbol ● Atomic WeightAtomic Number ● Symbol ● Atomic Weight

Element ● Compound ● MixtureElement ● Compound ● Mixture

I am Dmitri Mendeleev!I am Dmitri Mendeleev!

I made the PERIODIC TABLE !I made the PERIODIC TABLE !

What is the PERIODIC What is the PERIODIC TABLE?TABLE?

o Shows all known Shows all known elements in the elements in the universe.universe.

o Organizes the Organizes the elements by chemical elements by chemical properties.properties.

How do you read the How do you read the PERIODIC TABLE?PERIODIC TABLE?

What is the ATOMIC NUMBER?What is the ATOMIC NUMBER?

o The number of The number of protons found in protons found in the nucleus of an the nucleus of an atomatom

OrOro The number of The number of

electrons electrons surrounding the surrounding the nucleus of an atom.nucleus of an atom.

What is the SYMBOL?What is the SYMBOL?

o An abbreviation An abbreviation of the element of the element name.name.

What is the ATOMIC WEIGHT?What is the ATOMIC WEIGHT?

o The number of The number of protons and protons and neutrons in the neutrons in the nucleus of an atom.nucleus of an atom.

How do I find the number of How do I find the number of protons, electrons, and neutrons protons, electrons, and neutrons in an element using the periodic in an element using the periodic

table?table?

o # of PROTONS# of PROTONS = ATOMIC NUMBER= ATOMIC NUMBER

o # of ELECTRONS# of ELECTRONS = ATOMIC NUMBER= ATOMIC NUMBER

o # of NEUTRONS# of NEUTRONS = ATOMIC _ ATOMIC= ATOMIC _ ATOMIC WEIGHT WEIGHT NUMBERNUMBER

Now you are almost as smart Now you are almost as smart as I am!as I am!

But not as handsome!But not as handsome!Man, I look GOOD!Man, I look GOOD!

Elements, Compounds, Elements, Compounds, and Mixturesand Mixtures

What is an ELEMENT?What is an ELEMENT?o A substance A substance

composed of a composed of a single kind of single kind of atom.atom.

o Cannot be broken Cannot be broken down into another down into another substance by substance by chemical or chemical or physical means.physical means.

What is a COMPOUND?What is a COMPOUND?

o A substance in A substance in which two or which two or more different more different elements are elements are CHEMICALLY CHEMICALLY bonded bonded together.together.

What is a MIXTURE?What is a MIXTURE?

o Two or more Two or more substances substances that are mixed that are mixed together but together but are NOT are NOT chemically chemically bonded.bonded.

Element, Compound or Element, Compound or Mixture?Mixture?

Element, Compound or Element, Compound or Mixture?Mixture?

Element, Compound or Element, Compound or Mixture?Mixture?

Element, Compound or Element, Compound or Mixture?Mixture?

Element, Compound or Element, Compound or Mixture?Mixture?

Element, Compound or Element, Compound or Mixture?Mixture?

You are still not as You are still not as handsome as the great handsome as the great

Mendeleev!Mendeleev!

I am working this beard!I am working this beard!Man, I look GOOD!Man, I look GOOD!

THANK YOU..THANK YOU..