The
Periodic
Table
Is
Awesome!
100
The most reactive non-metals is in this group.
What is group 7A (Halogens)
100
Moving from left to right across a row of the periodic table, this value increases by exactly one from element to element
What is atomic number
100
This element is found in nature only in compounds
What is sodium
100
Mendeleev arranged the known chemical elements in a table according to increasing this.
What is mass
100
Most of these are solid at room temperature
What is metals
200
Se, Br, Kr are all classified as this
What is nonmetals
200
In a periodic table, a set of properties repeats here.
What is down a column
200
The tendency of an element to react is closely related to this
What is amount of valence electrons
200
At room temperature, NONE of the metals are this
What is gas
200
As you move from left to right across a period, the number of valence electrons does this
What is increase
300
A member of the boron family has three valence electrons while a member of the nitrogen family has this many.
What is five
300
This element is found in most of the compounds in your body except for water
What is carbon
300
To keep them from reacting, some highly reactive elements are stored in this element
What is argon
300
Copper, tin, and cesium are all this
What is metals
300
Atoms of the most reactive elements tend to have this many valence electrons
What is 1 or 7
400
Two highly reactive elements in Period 2 are the metal lithium and this nonmetal
What is fluorine
400
Fe, Se, Ge, and Ga. Only one of these is a metalloid
What is Germanium
400
element in Group 15 that makes up 80% of the air you breathe
What is nitrogen
400
unreactive nonmetals in Group 18 that do not react with other elements under normal conditions
What is noble gases
400
a nonmetal in Group 16 that is necessary for substances to burn
What is oxygen
500
Elements of Groups 3 through 12 are all called this
What is transition metals
500
When a halogen reacts with a metal, this is formed
What is a salt
500
nonmetal that forms a wide variety of compounds, such as proteins, fats, and carbohydrates, that are important for living things
What is carbon
500
metals that have one outer-level electron and are so reactive that in nature they are found only combined with other elements
What is alkalai metals
500
metals that have two outer-level electrons
What is alkaline earth metals
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