Atoms,atoms atoms
the center of the atom is known as the
nucleus
developed the first periodic table
Dimitri Mendeleev
O is the symbol for
oxygen
The number of protons in the atom are also known as the
atomic number
This family has elements that will burn your skin if touched
alkali metals
The positive charge in the atom is the
proton
The horizontal rows on the periodic table are called
periods
C is the symbol for
Carbon
The number of electrons in an atom equals the number of
protons
Elements in this family can dissolve in acid
Transition Metals
The negative charge in the atom is the
electron
The planetary Model was developed in 1913 by
Neils Bohr
N is the symbol for
Nitrogen
The number of protons plus the number of neutrons equals the
mass number
Atoms in this family are tasteless, colorless, and odorless
noble gasses
The neutral charge in the atom is the
neutron
The vertical columns on the periodic table are called
groups
Au is the symbol for
gold
Atoms that have different numbers of neutrons, but the same number of protons
isotopes
elements in this family are extremely poisonous
halogens
Where are the electrons found in an atom
electron cloud
Who discovered how to measure the positive charge on the nucleus
Henry Mosely
What is the symbol for lead?
Pb
The element Carbon has an atomic number of 6 and a mass number of 12. How many neutrons are in Carbon?
6
Elements in this family are essential for life
BCNO family