Atom Parts
Electrons are found in the ______ and have a ______ charge
orbitals or outside of the nucleus
negative
Which number is the atomic number on the periodic table?
the whole number
What are the horizontal rows called?
periods
What is the atomic number for oxygen?
8
What are groups 3-12 known as?
transition metals
Protons are found in the ________ and have a _______ charge
nucleus, positive
Which number is the atomic mass on the periodic table?
decimal number
What are the vertical columns called?
groups or families
What is the atomic mass for sodium?
22.99 amu
Neutrons are found in the _______ and have a ________ charge
nucleus, no charge
What is hyphen notation?
Element-Mass Number
The periodic table is composed up of more _______ than nonmetals.
metals
What whole number would you round carbon's atomic mass to in order to figure out how many neutrons carbon has?
12
What is group 1 known as?
alkali metals
The atomic number tells you how many ___________ and __________ there are in a neutral atom
protons, electrons
What is shorthand notation?
The element's symbol with the mass number in the upper left hand corner and the atomic number in the lower left hand corner
Elements in the same _________ share similar properites.
groups or families
What is one element that share properties with neon?
any noble gas
What is group 17 known as?
halogens
How do you find how many neutrons there are in an atom?
Mass number minus number of protons
What is an isotope?
Who came up with the idea of the periodic table?
Mendeleev
How many neutrons does boron have?
6
What is group 18 known as?
noble gases