1.2. Periodic table Flashcards
What are groups in the periodic table?
The columns, numbered 1, 2, 3, 4, 5, 6, 7, 0
What can the group tell you about the electrons in an atom?
Group number = number of electrons in the outer shell
What are periods in the periodic table?
The rows in the periodic table
Why did Mendeleev leave gaps in his periodic table?
For elements that had not been discovered yet
What is the common name for group 1?
Alkali Metals
What is the trend in reactivity as you go down group 1?
Increases
What is the trend in boiling points as you go down group 1?
Decreases
What is the common name for group 7?
Halogens
What is the trend in the reactivity as you go down group 7?
Decreases
What is the trend in boiling points as you go down group 7?
Increases
What is the common name for group 0?
Noble Gases
Why are the noble gases are unreactive?
They have full outer shells, so do not need to gain or lose electrons
What is the trend in boiling points as you go down group 0?
Increases
What is a displacement reaction?
A reaction in which a more reactive element takes the place of a less reactive element in a compound
What is the name of the block of elements in the middle of the periodic table?
Transition Metals
