Periodic table Flashcards
1
Q
What is the name of the table that shows all different atoms there is on earth?
A
Periodic Table of Elements
2
Q
What is an atom?
A
The basic unit of a chemical element
3
Q
What can we determine about an element from the periodic table?
A
Name
Symbol
Atomic number
Mass number
4
Q
What is the name of the element represented by the symbol āNā?
A
Nitrogen
5
Q
What is the atomic number of Nitrogen?
A
7
6
Q
What is the formula for finding the mass number?
A
protons + neutrons
7
Q
What is the mass number of an element if it has 7 protons and 7 neutrons?
A
14
8
Q
What is the formula for finding the number of neutrons?
A
mass number - protons =neutrons
9
Q
How many neutrons does Nitrogen have?
A
7
Mass # - # Protons=Neutrons
14-7=7
