in an element. EXAMPLE: Identify the unknown element. a. Element X (8 protons, 8 electrons, 8 neutrons) b. Element Y (35
CONCEPT: STRUCTURE OF THE ATOM We learned that the basic functional unit in chemistry is the _____________ . •
Now it’s time to go into an atom to figure out its components: _________ subatomic particles.
In the center of an atom there is the _____________, •
It contains the subatomic particles: _____________ and _____________.
•
Spinning around it we find the third subatomic particle: the _____________.
•
PROTONS are _________________ charged subatomic particles.
•
ELECTRONS are _________________ charged subatomic particles.
•
NEUTRONS are _________________ charged subatomic particles.
ATOMIC NUMBER equals the number of _________________ and determines _________________ of an element. ATOMIC MASS equals the number of ____________________________ in an element.
EXAMPLE: Identify the unknown element. a. Element X (8 protons, 8 electrons, 8 neutrons)
b. Element Y (35 protons, 36 electrons, 46 neutrons)
c. Element Z (12 protons, 10 electrons, 13 neutrons)
