Unit 3 - Periodic Table Flashcards
1
Q
What is a group in the periodic table
A
A group is a vertical column of elements that have similar chemical properties since they have the same number of electrons in the outer shell
2
Q
What is a period in the periodic table
A
A period is a horizontal line of elements where the atomic numbers increase from left to right
3
Q
How do we separate metals and non-metals (conductivity)
A
Metals conduct electricity (free electrons)
Non-metals do not conduct electricity (they do if ionic and dissolved in water)
4
Q
How do we separate metals and non-metals (acid-base character of oxides)
A
Metal oxides dissolve to form alkalis
Non-metal oxides dissolve to form acids
5
Q
What is the periodic table
A
An arrangement of elements in order of atomic number
