Chapter 3 Flashcards
1
Q
Atomic Mass
A
the atomic mass of an element is the average the all the isotopes of that element.
2
Q
Periodic table
A
A periodic table is an arrangement of elements showing the repeating pattern of their properties. [means in a regular repeated pattern]
3
Q
Chemical symbol
A
Just below the atomic number is the letter K-the chemical symbol for potassium.
4
Q
Periods
A
The periodic table is arranged in rows called periods.
5
Q
Group
A
The elements in a column from a group.
