Atoms
what do atoms do
atoms build together and make to from a moleculse
how many does He2 have
He has 2
true or false a protons is positive
true
who made the Periodic table
Dmitri Mendeleev
what is the element for h
Hydrogen
two types of atoms
how many does Li4 have
it has 4
true or false electrons has a negative charge
that is true
when was the periodic table made
the periodic table was made in 1869
what is the element for Li
Lithium
who made the first atoms
Democritus
how many does h3 have
it has 3
true or false neutrons possessing no net charge.
true
how many elements are a on periodic
there are 118 element on the periodic table
what is the elements for Ar
Argon
when was the first atom discovered
450 B.C.
how many dose Be4 have
it has 4
true or false people are made out of atoms
true people are made out 99% of atoms
how many energy level are on the periodic table
there are seven energy level
what is the elements of be
Beryllium
when was the first atom used
on July 16,1945
how many dose C3 have
it has 3
how many atoms are there
there are five atoms
who was the first person to used the first periodic table
Dimitri Mendeleev
what is the elements for Ca
what is Calcium