periodic table test Flashcards
the columns in the periodic table (up and down)
groups/families
the horizontal groups in the periodic table (left to right)
periods
every element within a group will have…
properties that are similar {same number of valence electrons}
group one
alkali metals
group two
alkaline earth metals
group three - twelve
transition elements or (metals)
group thirteen
boron group
group fourteen
carbon group
group fifteen
nitrogen group
group sixteen
oxygen group
group seventeen
halogens
group eighteen
noble gasses
metalloids are
substances that can be metal or non metal
halogens are
the group where all three phases of substances exist
What did Mendeleev do and in what time period
produced periodic table based on mass
(late 1800’s)