Periodic Table Flashcards
Who created one of the first periodic tables?
Dimitri Mendeleev
What is an element?
Only one type of atom
What are horizontal rows called on the periodic table?
Periods
What are vertical columns called in the periodic table?
Groups
Roughly how many elements are there in the periodic table?
118 elements
Where are metals located in the periodic table?
On the left side and middle
Where are non metals located in the periodic table?
Right side
What are 5 properties of metals?
Strong
Shiny
Malleable
Conduct energy
Conduct electricity
5 properties of non metals?
Dull
Brittle
Poor conductors of heat and energy
Low density
Low melting point and low boiling point
What is a compound?
Two or more elements chemically joined together.
What is a molecule?
Two or more atoms joined together
What does daltons model show?
All matter is made of atoms
There are differnt types of atoms
Each element contains a different type
What is an atom?
the smallest part of a substance (tiny participles)
What is the symbol for iron?
Fe
What is the symbol for carbon?
C