Introduction to the Periodic Table

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Presentation transcript:

Introduction to the Periodic Table Atomic Number ● Symbol ● Atomic Weight Element ● Compound ● Mixture

I made the PERIODIC TABLE ! I am Dmitri Mendeleev! I made the PERIODIC TABLE !

What is the PERIODIC TABLE? Shows all known elements in the universe. Organizes the elements by chemical properties.

How do you read the PERIODIC TABLE?

What is the ATOMIC NUMBER? The number of protons found in the nucleus of an atom Or The number of electrons surrounding the nucleus of an atom.

What is the ATOMIC SYMBOL? An abbreviation of the element name.

What is the ATOMIC WEIGHT (aka mass number)? The number of protons and neutrons in the nucleus of an atom.

How do I find the number of protons, electrons, and neutrons in an element using the periodic table? # of PROTONS = ATOMIC NUMBER # of ELECTRONS = ATOMIC NUMBER # of NEUTRONS = ATOMIC _ ATOMIC WEIGHT NUMBER

Now you are almost as smart as I am! But not as handsome! Man, I look GOOD!

Elements, Compounds, and Mixtures

What is an ELEMENT? A substance composed of a single kind of atom. Cannot be broken down into another substance by chemical or physical means.

What is a COMPOUND? A substance in which two or more different elements are CHEMICALLY bonded together.

What is a MIXTURE? Two or more substances that are mixed together but are NOT chemically bonded.

Element, Compound or Mixture?

Element, Compound or Mixture?

Element, Compound or Mixture?

Element, Compound or Mixture?

Element, Compound or Mixture?

Element, Compound or Mixture?

You are still not as handsome as the great Mendeleev! I am working this beard! Man, I look GOOD!

Life depends on hydrogen bonds in water. _ + Water is a polar molecule. Polar molecules have slightly charged regions. Nonpolar molecules do not have charged regions. Hydrogen bonds form between slightly positive hydrogen atoms and slightly negative atoms.

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