Periodic Table Flashcards
What is a Family?
Elements in columns with similar properties.
What is a Period?
Atomic number that increases horizontally from left to right.
What is a Group?
Same as Elements but listed from 1 to 8.
List ALL the Families…
Alkali Metals, Alkali Earth Metals, Transition Metals, Other Metals, Metalloids, Non-Metals, Halogens, and Noble Gases.
Characteristics of Metals…
Shiny, high density, solid and room temperature, ductile, malleable, high boiling-melting, 1-3 valence electrons.
Characteristics of non-metals…
low melting-boiling point, brittle, low density, poor conductors, tend to gain electrons in chemical reactions, non-ductile, non-malleable, commonly liquid or gas.
What is a Metalloid?
Elements that have properties between Metals and Non-metals.
Give three examples of Metalloids…
Boron, Silicon, Germanium.
Where do you find Metals in the Periodic Table?
Before Metalloids (left part of the Periodic Table).
Where do you find Non-metals in the Periodic Table? What Element is the exception?
After Metalloids (right part of the Periodic Table) & Hydrogen is the exception.
What do all Elements of a Group have in common?
Number of Valence Electrons.
What do all Elements in a Period have in common?
They have the same energy level.
What is the definition of an Element?
A substance made of one type of atom.
How many different elements are there? Are they all natural?
116 & no
What is a valence electron?
An electron in the higher energy level that can make new boundaries.
