w ere dating OMg From Mike Bolli An Element is an unchangeable substance cant be broken down into simpler substances is the building block of all matter Remember matter has a mass and takes up space ID: 808402
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Slide1
Elements
Slide2Slide3Chemistry Joke
What did Mike say when he heard magnesium and oxygen were dating?
OMg
!
From Mike
Bolli
Slide4An Element…is an unchangeable substance.
…can’t be broken down into simpler substances.…is the building block of all
matter. Remember matter has a mass and takes up space.
Slide5Chemistry Joke
Where do you put a dead chemist?
You
Barium
them!
Slide6Elements and Matter
Elements combine to form all the different substances (matter) in the world.
Slide7Chemistry Joke
Where do you put dirty dishes?
In the
Zinc!
Slide8Chemical Property Definition: A chemical property is a property or behavior of a substance when it undergoes
a chemical change or reaction.Examples: flammability, poisoning, rusting
Properties
Physical Property Definition:
The measurement of a
physical
property may change
the arrangement of matter in a sample, but not the structure of its molecules.Examples: mass, density, boiling and melting points & volume
Slide9Chemistry Joke
What show do cesium and iodine love to watch together?
CsI!
Slide10The First P
eriodic T
able
Dmitry Mendelyev create d the first periodic table in 1869
.
He recognized that certain elements share the same chemical
Properties so he grouped them together on his version of the
table. The ones that were most alike were grouped in the same column. He called these similar columns Groups.
When he arranged his version of the table, he noticed their were gap in the table. This lead him to predict that an undiscovered element would fit in this spot with similar properties.
Slide11Groups on the Periodic Table
Alkali Metals- column 1—Very reactive and explosive in water.Alkaline Earth metals-Reactive with other elements, the lighter element are go for you. Example: Calcium
Metals-there are 4 main characteristics of Metal, one is how well it conducts electricity.
Halogens-very reactive, often combining with metals
and Alkali metals
Noble Gas-will not react with any element on the periodic table.
Slide12Chemistry Joke
What kind of weapon did the chemistMore from potassium, Nickel and Iron?
A
KNiFe
!
Slide13The Periodic TableThanks to Mendeleyev, he gave us a table that organizes
the elements from simplest to most complex.
Slide14Chemistry Riddle
What is “HIJKLMNO”?
H
2
O
!
Slide15Sun is 75% hydrogen, 0.9% oxygen.
Slide16Iron is the most abundant element in the earth at 35%, 28% oxygen.
Slide17The Earth’s Atmosphere is 78% Nitrogen,21% Oxygen.
Slide18The ocean is 85% Oxygen, followed by 11% Hydrogen.
Slide19You are made of 65% Oxygen, followed by carbon at 18%.
Slide20Chemistry Joke
How did the date between oxygenand potassium go?
It went OK
!
Slide21StardustBecause billions of years ago, ago huge star exploded leaving behind dust and gas. Thanks togravity this dust and gas (the 90 known elements)
came together to form our sun and planets.
Slide22Chemistry Joke
If H2O is the chemical formula forwater, what is the formula for ice?
It is H
2
O cubed
!
Slide23Importance of C, H,O, & N
Carbon, Hydrogen and oxygen make up carbohydrates (sugars and starches) and Lipids (fats).Carbon, Hydrogen, Oxygen, and nitrogen make up proteins.
90% of living matter is made of these 4 elements.
Slide24Chemistry JokeWhat did the comic say when he
Was asked if he had any jokes about sodium?
Na
Slide25Because the there are infinite combinations of those 90 elements.Different substances
Slide26Chemistry Joke
Where do you put a dead chemist?
You
Barium
them!