Particles
what do subatomic particles make up
what is atoms
rows going across the periodic table horizontally left and right
what is periods
how many electrons can be in the first layer
what is 2
what are protons, neutrons, and electrons
what are subatomic particles
columns on the periodic table going up and down vertically
what are groups
how many electrons can be in the second layer
8
particle with a negative charge
what is electrons
regions around the nucleus were electrons are found
what are energy levels
how many electrons can be in the third layer
what is 8 again
particle that has a positive energy
what is protons
use the groups to quickly figure out the number of what
what is valence electrons
how many electrons are in the fourth in final layer
2
particle that has a neutral charge
what is neutrons
every new period row counts for
what it a new energy level
a chemical bond between electrons in one to two atoms
covalent bonds