How many electrons can the second energy level of an atom hold?
8
Which particle has a neutral charge?
neutron
Why are noble gases considered inactive?
Their outer most energy level is full
How are solutions different from heterogeneous mixtures?
the heterogeneous is made of different substances while the solution is the same throughout.
Which 2 particles are found in the nucleus?
protons and neutrons
Why are alkali metals found in nature combined with other elements?
Because they are active metals
How are the elements arranged on the periodic table?
They are arranged by the atomic number
How are electrons arrange?
By their energy levels
What are the characteristics of metal?
They are malleable, ductile, and good conductors of heat.
What are the "Stair steps" on the periodic table called?
Non Metals