Periodic table Flashcards
What is the atomic number of Carbon?
6
True or False: The periodic table is organized by increasing atomic mass.
False
Fill in the blank: The vertical columns in the periodic table are called _______.
groups
What element has the chemical symbol ‘Na’?
Sodium
What is the main characteristic of metals on the periodic table?
They are good conductors of heat and electricity.
Which element is located in period 3, group 1?
Sodium
What do elements in the same group have in common?
They have similar chemical properties.
Fill in the blank: The elements in period 1 of the periodic table are _______ and _______.
Hydrogen, Helium
True or False: All elements have a unique atomic number.
True
What is the term for the horizontal rows in the periodic table?
Periods
What is the primary factor that determines an element’s position in the periodic table?
Atomic number
True or False: Nonmetals are generally good conductors of electricity.
False
What is the significance of the zig-zag line on the periodic table?
It separates metals from nonmetals.
What is the term for the vertical rows in the periodic table?
Groups
How many groups are there
18, numbered from 1 to 18 from left to right
