metals
nonmetals
general
misc.
periodic table facts
100
The most active metals, those in group 1A are called the
What is alkali metals
100
name 1 group 5A nonmetal are found in fertilizers
What is nitrogen or phosphorous
100
group 1A metals have how many valence electrons
What is 1
100
who developed the first practical periodic table
Who was Mendeleev
100
A horizontal row on the periodic table is called a
What is period
200
calcium and magnesium are found in group 2A which is the
What is alkaline earth metals
200
which nonmetal is used by living things to get energy from food
What is oxygen
200
which group of elements are most nonreactive
What is noble gases
200
Mendeleev based his periodic table on the _________ of elements
What is masses
200
a vertical row on the periodic table is called a
What is group
300
in the alkali metal group the metals get more active as you go which way
What is down
300
which nonmetal forms the backbone of compounds found in living things
What is carbon
300
what is the only metal that is a liquid at room temperature
What is mercury
300
the modern periodic table is based on what
What is atomic number or number of protons
300
The periodic table is based on increasing numbers of what in each element
What is protons
400
What is the most common metal in earths crust
What is aluminum
400
which nonmetal group are the most reactive
What is halogens
400
what is the name for elements with properties between metals and nonmetals
What is metalloids
400
Why was Mendeleevs periodic table considered successful
What is he was able to predict properties of unknown elements
400
the pattern seen when elements are arranged by increasing atomic number is called what law
What is periodic law
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