Periodic Table Basics
The way we currently arrange the periodic table.
What is atomic number?
High luster, malleable, ductile, thermal/electrical conductors, some magnetic.
What are properties of metals?
Have properties of metals and nonmetals
What are metalloids?
Found in all organic compounds, has 4 valence electrons, will gain or lose 4e- to become stable, and makes up 80% of all compounds.
What is carbon?
Elements in this group would have a 1- charge to become stable.
What are halogens?
The way Mendeleev arranged the elements in the original periodic table.
What is atomic mass?
Most reactive metals with 1 valence electron; will lose one electron to become stable.
What are alkali metals?
Conducts electricity, under the right conditions; property of metalloids.
What is a semiconductor?
The element that is most common in our atmosphere (78%).
What is nitrogen?
Name of the last two rows underneath the periodic table.
Elements in the same _______ have the same number of valence electrons.
What is a group/family/column?
Most hard and shiny, good conductors of heat/electricity, less reactive, some used for jewelry (malleable), high melting points.
What are transition metals?
Most gases at room temperature, poor conductors of heat and electricity.
What are nonmetals?
Found in 20% of our air and 60% of our body, has 6 valence electrons.
What is oxygen?
This element does not have a group of its own because it is a nonmetal but is found in the alkali metal group. It gains or loses 1 electron to become stable.
What is hydrogen?
Elements in the same ______ have the same number of orbits/energy levels.
What are periods/rows?
Synthesized elements created by nuclei joining together in a particle accelerator; created from Uranium.
What are trans-uranium elements?
Nonmetal that is liquid at room temperature.
What is bromine?
Most reactive nonmetals, 7 valence electrons, salt-forming.
What are halogens?
Good conductors of heat/electricity, loses 2e- to become stable, ductile.
What are alkaline earth metals?
Elements in the periodic table are grouped by similar _______.
What are properties?
Mixtures of metals. Examples include: Brass, Stainless Steel, Bronze, White Gold
What are alloys?
Two of the same atoms, such as O2 gas or H2 gas.
Not reactive with other elements, full outer orbit.
What are noble gases?
Francium is more reactive than sodium because it has more ______.
What are orbits/shells/energy levels?