Studied by 6 peopleWhat do the periods on the periodic table tell you?
number of rings the Bohr model has
What is an electron dot diagram/Lewis dot structure based on?
the family the atom is in
What can you predict from an elements location on the periodic table?
non-metal or metal
What does H2O represent?
chemical formula
Give an example of physical change
color, taste, shape
Give an example of chemical change
flammability
The number in the chemical formula tells you what? What is that number called? ex MgBr2
how many elements that atom has, aka subscript
Each family in the periodic table has it’s own characteristic properties based on. . .
the number of valence electrons (outer ring on the Bohr model)
When an atom loses an electron, what does it become?
cation
Polyatomic ions
an ion that contains more than one atom
Atom
smallest possible unit into which matter can be divided, while still maintaining it’s properties
2 subatomic particles found in a nucleus?
protons and neutrons
greatest number of valence electrons an atom can have
8
rows across periodic table are called
periods
chemistry
branch of science that deals with the identification of the substances of which matter is composed
matter
anything that has mass and takes up space
element
substances that can’t be broken down chemically into other substances
Ernest Rutherford
discovered positively charged nucleus during gold foil experiment
density
measure of the amount of matter present in a volume of substance
mass number of an element
protons + neutrons
density of an object
mass divided by volume
what makes an atom neutral
protons are the same number as electrons
Mendeleev arranged the first table
increasing atomic mass
Element location on the periodic table tells you. . .
the properties of the new elements
What has SIMILAR properties on the periodic table?
elements with the SAME number of valence electrons
most reactive metals on the periodic table
Lithium and Sodium
which elements would gain 2 electrons to become stable?
hydrogen, lithium, beryllium
which elements would have 2 valence electrons?
helium
what info in the periodic table indicates the number of protons in an atom?
atomic number
what parts of the atom move around the nucleus
electrons
how many dots around the phosphorus lewis dot structure
5
noble gases
are the elements that don’t normally form compounds because they are stable
electrons
subatomic particles that have negative electric charge
Proton charge
positive
Neutron (neutral) charge
none
Electron charge
negative
Groups/Families 1
Hydrogen
Groups/Families 2
Beryllium
Groups/Families 17
Flourine
Group/Families 18
Helium
elements in which group are least likely to bond with another atom?
noble gases
Water density (H2O)
997 kg/m3 OR 1 gm/ml
Note 
Flashcard (111)