what did mike say when he heard magnesium and oxygen were dating?
TRANSCRIPT
Chemistry JokeWhat did Mike say when he heard magnesium and oxygen were dating?
OMg!
From Mike Bolli
An 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.
Chemical 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
The First Periodic TableDmitry 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.
Groups on the Periodic TableAlkali 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.
The Periodic
Table
Thanks to Mendeleyev, he gave us a table that organizes the elements from simplest to most complex.
Chemistry RiddleWhat is “HIJKLMNO”?
H2O!
Stardust
Because 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.
Chemistry Joke
If H2O is the chemical formula forwater, what is the formula for ice?
It is H2O cubed!
Importance 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.