periodic table
Chemistry's master grid
The periodic table is a chart organizing all known chemical elements by atomic number and chemical properties.
Elements are arranged in rows (periods) and columns (groups), with those sharing similar characteristics aligned vertically.
It's a foundational tool in chemistry, predicting element behavior and relationships: Every chemistry classroom has a periodic table on the wall.
Chemist who systematized elements
- MeyerGermanic steward surname
- discoveryAct of finding something
- predictionForecast of coming events
- gapsUnfilled spaces between
triads · octaves · 1869 · Nobel Prize
Proton quantity per nucleus
- atomic massWeighted average of isotopes
- valence electronsOutermost electrons determining reactivity
- electron shellsAtomic electron arrangement regions
- orbitalsElectron probability distributions
isotopes · protons · neutrons · electrons · nucleus · ion · oxidation state · mass number
Simplest atomic element
- heliumLightest noble gas
- carbonSixth element, atomic symbol C
- oxygenElement eight, colorless gas
- nitrogenElement seven, colorless gas
iron · gold · silver · copper · uranium · plutonium · mercury · lead
Tendency to chemically combine
- electronegativityAtomic electron attraction strength
- conductivityAbility to carry current
- malleabilityCapacity for deformation without breaking
- ductilityAbility to stretch unbroken
density · melting point · boiling point · solubility · magnetism · radioactivity · stability · bonding
Lustrous conductive elements
- nonmetalsElements without luster or conductivity
- metalloidsElements between metals and nonmetals
- alkali metalsHighly reactive soft elements
- alkaline earthGroup two elements
transition metals · lanthanides · actinides · noble gases · halogens · rare earth · superheavy · transuranic
Spans of time
- groupsCollections of related things
- blocksObstructs or sections
- rowsSide-by-side sequences
- columnsUpright structural shafts
cells · layout · grid · matrix · chart · arrangement · classification · organization
Mendeleev
Chemist who systematized elements
- MeyerGermanic steward surname
- discoveryAct of finding something
- predictionForecast of coming events
gaps · triads · octaves · 1869 · Nobel Prize
atomic number
Proton quantity per nucleus
- atomic massWeighted average of isotopes
- valence electronsOutermost electrons determining reactivity
- electron shellsAtomic electron arrangement regions
orbitals · isotopes · protons · neutrons · electrons · nucleus · ion · oxidation state · mass number · electronegativity
hydrogen
Simplest atomic element
nitrogen · iron · gold · silver · copper · uranium · plutonium · mercury · lead · neon
reactivity
Tendency to chemically combine
- electronegativityAtomic electron attraction strength
- conductivityAbility to carry current
- malleabilityCapacity for deformation without breaking
ductility · density · melting point · boiling point · solubility · magnetism · radioactivity · stability · bonding · valence
metals
Lustrous conductive elements
- nonmetalsElements without luster or conductivity
- metalloidsElements between metals and nonmetals
- alkali metalsHighly reactive soft elements
alkaline earth · transition metals · lanthanides · actinides · noble gases · halogens · rare earth · superheavy · transuranic
periods
Spans of time
columns · cells · layout · grid · matrix · chart · arrangement · classification · organization · systematization
- periodic tableelements, hydrogen, helium, carbon, oxygen
- science educationscience fair, science class, science teachers, science lab, science projects
- science imagesDNA helix, petri dish, test tube, beaker, telescope view
- classroom postershuman body, brain diagram, heart diagram, solar system
- science classbiology, chemistry, physics, lab, experiment
- Chemistry Educationchemistry labs, chemistry teacher, chemistry textbooks, general chemistry, organic chemistry
periodic tablehodgepodge
Confused, disorderly mixture
chaos · miscellany · grab bag
periodic tablefour elements
Classical natural categories
five elements · astrological chart · elemental magic · philosopher's stone
periodic tablefour elements
Classical natural categories
phlogiston theory · philosopher's stone · aether · quintessence · alchemy
table, period, tables, periodic, periodically, periodical, tabled, tabling, periodicity