- ATOM
- It is almost completely empty space
- Tiny particle
- Energy source
- Molecule builder
- Nuclear energy source
- Reactor factor
- Source of power
- Basic component
- Basic unit
- Bit
- Elementary particle
- Mighty mite
- __ smasher
- Diminutive DC Comics superhero
- Minute particle
- Nature's building block
- Power source
- Smallest unit of an element
- Unit of matter
- It was first split at Cambridge in 1932
- Quark's place
- Food thickener
- Minute particle of matter
- Small matter?
- Speck with a nucleus
- Bit of physics?
- Unit that's dangerous to divide
- What the Emmy-statuette lady holds
- Dispenser of sawbucks (or ... basic unit of matter)
- Split bit
- It might be involved in an explosive breakup
- It's bigger than a baryon
- Its mass is measured in daltons
- ___ Heart Mother (Pink Floyd record)
- Universal substance
- It makes everything matter
- Very tiny thing made of super hella tiny things
- Itty-bitty bit
- One may be diagrammed in chemistry class
- Bit of matter
- Nuclide, e.g.
- Element component
- Supercollider bit
- Bit of science
- Fission bit
- It may be split or smashed
- Kind of bomb
- See 12-Down
- Split thing
- Little matter
- Small amount of gold
- Physics tidbit
- Molecular unit
- Unit for Democritus
- Scintilla
- Very small matter
- Molecule component
- Molecule member
- Bohr model representation
- Molecular part
- Quark component
- Tiny thing in science
- It gets smashed in a lab
- Bit of chemistry
- Cyclotron morsel
- Smashed item in a lab
- Thing smashed by the Hadron Collider
- Democritus' indivisible unit
- Molecular constituent
- Elemental unit
- Film director Egoyan
- Locus of a quark
- Smithereen
- Small building block
- Director Egoyan
- Splittable bit
- Universe minutia
- Teensy bit
- Model in physics class
- Matter constituent
- Tiny powerhouse
- Little building block
- Mote of matter
- Building block of matter
- Iota
- Teeny component
- Teeny bit
- Whit
- Bit or whit
- Particle disputed by Aristotle
- Smallest part of an element
- Subject for Bohr
- Canadian film director Egoyan
- Canadian film director ___ Egoyan
- Pink Floyd album, "__ Heart Mother"
- Small bit
- Democritus speculated on its structure
- Minute quantity
- The Bohr theory explained its structure
- Small energy source
- Small particle
- Unseen energy source
- Hard-to-divide object
- Democritus postulated it
- Molecule part
- What the Bohr model depicts
- One is depicted in the Emmy statuette
- Subject of Bohr's research
- Bit that can be split
- Cyclotron "fodder"
- Diminutive DC Comics hero, with "the"
- Quark's surroundings
- Logo used by the American Atheists
- Compound part
- He or I may represent it
- One of several in a supercation
- See 47-Across
- Nuclear physicist's concern
- Proton's place
- Small amount
- Speck
- Tiniest bit
- Element element
- It might get smashed
- Miniscule amount
- Something smashable
- Supercollider collider
- Bit to split
- Positron's place
- Teensy particle
- Electron's home
- Fissionable particle
- It may get smashed
- Proton place
- Tiny bit of matter
- Tiny bit of physics
- Tiny energy source
- Wee particle
- Basic unit for the elements
- Half the dictionary?
- Particle accelerator particle
- Particle that may be "smashed"
- Protons, neutrons, and electrons combined
- A little bundle of energy
- Little bit of matter
- Smallest conceivable portion
- Tiny bit
- ___ smasher
- Cartoon crime-fighter ___ Ant
- Elemental building block
- Smallest amount of gold?
- Wee bit
- Hanna-Barbera's heroic Ant
- Matter unit
- Power particle
- Tiny source of energy
- ___ Ant of cartoons
- Energy particle
- Fission subject
- Microphysics particle
- Nanotechnology subject
- Molecular component
- Basic particle
- Chemical building block
- Part of a molecule
- Physics focus
- It's made of electrons and protons
- Physics 101 topic
- Physics subject
- Subject of Bohr's theory
- Tiny building block
- Where a quark is located
- Building block of nature
- Controversial power source
- It might be split
- Place for a proton
- It may get smashed or split
- Element particle
- Elemental bit
- Physicist's subject of study
- Physics class topic
- Basic physics focus
- Neutron's place
- ___ Ant ('60s cartoon hero)
- Diagram subject in a chemistry text
- It's smashed in a particle accelerator
- Little bit
- Microscopic bit
- Particle depicted on an Emmy
- Proton's spot
- The first thirteen rows, perhaps
- Chemistry class model
- It's split in nuclear fission
- Little bundle of energy
- Physics particle
- What a ball represents in a ball-and-stick molecular model
- Where a quark is parked
- It may be split
- Particle
- Basic unit of matter
- Jot
- Mighty particle
- Smashed item
- Tiny thing
- Wee thing
- Electron home
- Proton site
- Tiny amount
- Smidgen
- Very small amount
- 41-Across's place
- Basic bit
- One of three in a water molecule
- Subject for Fermi
- __ bomb
- Elemental particle
- Basic building block
- Pile particle
- Subject of a split
- Tiny bundle of energy
- Tiny power source
- Symbol of the post-1945 age
- Heart of the matter?
- Subject for John Dalton
- Wee energy source
- N preceders?
- Cyclotron particle
- Molecule constituent
- Physics bit
- Quark's milieu
- Splitting it releases energy
- Unit quantified in a subscript
- Bit with a nucleus
- Concern for Edward Teller
- Cyclotron input
- Molecular bit
- Quark's locale
- Smashing target
- It can be viewed with a scanning tunneling microscope
- Elementary bit
- It may be ionized
- Minuscule bit
- Quark locale
- Physics building block
- Splitting target
- Tiny "smashing" target
- Tiny physics bit
- Particle for Fermi
- Chem class model
- Minute matter
- Physicist's study
- __ Ant: tiny toon superhero
- Either H in H|2|O
- Micro amount
- Physics matter
- Quark place
- Science word from the Greek for "indivisible"
- Minuscule amount
- Physics entity
- Symbol held aloft in an Emmy statuette
- Fission target
- Particle with an orbital system
- Quantity of strontium in an award-winning 2018 photograph
- AEC logo
- Smasher fodder
- Smasher input
- Mite
- Onetime AEC symbol
- Shred
- __ Land (2018 book on particle physics)
- 100-picometer thing
- Highest part of an Emmy
- Part of the "Big Bang Theory" logo
- Particle with protons
- Building block of physics
- Molecule unit
- Plutonium unit
- Tiny quantity
- Where electrons orbit
- Cyclotron target
- Molecule division
- Part of an Emmy statuette
- Modicum
- Bohr concern
- Neutron's home
- Electron's locale
- Electron's place
- Fissionable unit
- Place for positrons
- Proton spot
- Uranium unit
- Bond component
- Small part
- Big-bang material
- Bit of beryllium
- Minimal matter
- Minimal molybdenum
- Source of energy
- Fermi's study
- It's a small thing
- Literally, "indivisible"
- Molecule portion
- Place for protons
- Focus of physics
- Scene of bonding
- Depiction on an Emmy
- Ion, e.g.
- Ion, for instance
- Minimal amount of magnesium
- Nuclear power source
- Proton's locale
- Unit of uranium
- Ion, at times
- Minute amount
- Tiny portion
- Wee amount
- Angstrom-diameter thing
- Electron's surroundings
- Particle depicted on Emmys
- Proton's home
- __ smasher (supercollider nickname)
- Home for protons
- Bonding candidate
- Source of 20 Across
- Bohr's subject
- It might be smashed or split
- Molecule building block
- Controversial energy source
- Focus for Fermi
- Lepton's place
- Smasher particle
- Hadron's place
- Lepton's locale
- Neutrino's place
- Science class topic
- What the winged woman is holding in the Emmy statuette
- The Sweet Hereafter director Egoyan
- Bohr theory subject
- Cartoon character ___ Ant
- Cyclotron bit
- Hard thing to split
- It can get smashed
- Ararat director Egoyan
- Up and ___! (Radioactive Man's battle cry)
- Bohr model depiction
- Smallest particle.
- Word meaning indivisible.
- Subject of Smyth report.
- Split at Oak Ridge.
- Minute part.
- Controversial subject.
- Latest discovered source of energy.
- Subject of Fermi's research.
- Article of world-shaking dimensions.
- Constituent of an element.
- It means indivisible.
- Proton plus electron.
- Subject of research by Dalton, 1803.
- A very small thing.
- Aggregate of protons, neutrons and electrons.
- Bit of cyclotronic grist.
- Dr. Oppenheimer's forte.
- Dr. Oppenheimer's sphere.
- Mighty small thing.
- Nucleus and electrons.
- Object of scientific scrutiny.
- Particle under worldwide research.
- Smallest particle of an element.
- Symbol of the present age.
- Word in everyone's vocabulary.
- Fermi studies it.
- Fuel for a cyclotron.
- Power source of the future.
- Subject for the scientists.
- Subject of experiment.
- Unit of a molecule.
- A might little thing.
- Concern of 49 Across.
- Exceedingly small bit of anything.
- Niels Bohr's subject.
- Nuclear item.
- Smash hit of modern times.
- Dr. Teller's specialty.
- Headline word since Aug. 6, 1945.
- One of Max Planck's interests.
- Smallest thing.
- Subject of scientific research.
- Important particle.
- Mighty little thing.
- Oppenheimer's metier.
- Power behind the Nautilus.
- Source of isotopes.
- Very small thing.
- Part of an element.
- The universal particle.
- Urey studied it.
- Disney film, "Our Friend the ___."
- Item at Oak Ridge.
- Symbol of power.
- Symbol of smallness.
- Molecular element.
- Powerful particle.
- Particle of an element.
- Potent particle.
- Proton and electron.
- Small quantity.
- Scientist's concern.
- Iota's cousin.
- Infinitesimal bit.
- Molecular particle.
- Physicist's concern.
- 20th-century word.
- Splittable item.
- Term in science.
- Dr. Teller's field.
- Small thing.
- Bomb type
- ___ bomb
- Kind of smasher
- Monad
- Mote
- Concern of Compton and Fermi
- A.E.C.'s concern
- Type of bomb
- It's been split
- Physicist's topic
- A.E.C. concern
- Particle for Bohr
- Bohr subject
- Fissionable item
- Item studied by Niels Bohr
- Oft-split item
- One source of energy
- Item once thought indivisible
- N.R.C. concern
- Basis of all, to Lucretius
- It splits energetically
- Item discussed by Lucretius
- Cyclotron item
- Unit in physics
- First half of the alphabet
- Mini-powerhouse
- Mite that might blight
- Mote; bit
- Nuclear particle
- Fermi interest
- Nucleus locale
- Particle for a physicist
- Alphabet's first half
- It was smashed in the 40's
- Jot or bit
- Moat anagram
- Concern of Niels Bohr
- Lord Rutherford's concern
- Molecule element
- Oppenheimer subject
- An energy source
- Anagram for moat
- Little powerhouse
- The ___, comics crime fighter
- It's small but lethal
- Item for Bohr
- Oft-smashed particle
- Accelerator item
- Bit for Fermi
- It's little matter
- Smidgen that's smashed
- _____ bomb
- _____ smasher
- Mighty bit
- ____ bomb
- Diminutive DC Comics superhero, with "The"
- Fermi's fascination
- Pion's place
- First half of the files?
- Item of interest to Niels Bohr
- Chemistry book chapter,with "the"
- Home to a muon or pion
- Bohr's study
- Something to smash
- It's smashed in a lab
- With 60-Across, 1960's TV cartoon hero
- Minute bit
- Subject of fission
- Tiny part
- Interest of Fermi
- Site of tiny orbits
- Tittle
- With 41-Down, nuclear device
- Quantum mechanics model
- Molecular 60-Across
- Molecular matter
- Orbit site
- Unit proposed by Leucippus
- Volume 1 of a two-volume encyclopedia?
- Word that comes from the Greek for "indivisible"
- Excitable one
- Mr. ___, radioactive enemy of Captain Marvel
- One of three for H 2 O
- The H, H or O in H2O
- Building block of molecules
- Its diameter is measured in picometers
- Itsy-bitsy bit
- Maker of bonds
- Isotope, e.g.
- It's elementary
- Small wonder?
- Symbol in the logo of "The Big Bang Theory"
- Thing that might decay
- Bond holder?
- Bond part
- Half of a two-volume encyclopedia, say
- One of 24 in a glucose molecule
- Topic of elementary education?
- Captain ___ (DC Comics superhero)
- Focus of quantum mechanics
- Focus of study for Niels Bohr
- Tiny matter
- ___ Ant (cartoon superhero)
- Half of a two-volume directory
- Thing whose size is measured in picometers
- Bond collector?
- Something divided in W.W. II
- Chemist's study
- Little wonder?
- One tiny bit
- Physics 101 subject
- Something of little matter?
- Subject of J. J. Thomson's "plum pudding" model
- A little bit of everything?
- Elemental part of an element
- It may be bonded
- It's 99.9% "empty space"
- Its name comes from the Greek for "uncuttable"
- Just a bit
- Manhattan Project subject
- Model in a science classroom
- Research subject for which Bohr won a Physics Nobel
- Elementary building block
- High school model, maybe
- It's hardly any matter at all
- It's often drawn with three ellipses
- Its behavior is described by quantum physics
- Subject of study at CERN's laboratory
- Tiny unit of matter
- What's the matter?
- Fission focus
- It has small orbits
- Little bit of make-up?
- Subject for Niels Bohr
- The H or O in H2O
- Thematic element in 2023's "Oppenheimer"
- It comes from the Greek for "indivisible"
- What the Bohr model models
- With 28-Across, particle accelerators
- Quark site
- Lepton site
- Molecule bit
- Fluke: "___ Bomb"
- This might split at the best show of your life
- Smallest unit of matterAni DiFranco sings about
- Echobelly song about physics?
- Might split at best show of your life?
- What Massive Attack will be "Splitting"?
- Particle Ani DiFranco sings about
- Nanotechnology concern
- Word from the Greek for "uncuttable," ironically
- Emmy-statuette element
- Subject of the physicist J. J. Thomson's plum-pudding model
- Small unit of matter
- Bit of a molecule
- It underwent a newsworthy split in the thirties
- Little bit of everything?
- Subject of study for Nobel winner Maria Goeppert Mayer
- Bit of nuclear physics
- It gets smashed
- Niels Bohr's concern
- Niels Bohr's study
- Physicist's subject
- Quantum theory subject
- Sometimes it gets smashed
- A bit of chemistry?
- Bohr's bailiwick
- Bohr's bit
- Cyclotronic bit
- It was once thought to be indivisible
- It's tiny and it may get smashed
- Sometimes it's smashed
- Label on the first of two file drawers?
- Molecule maker
- Powerful mite
- Label on the first of two file drawers, maybe
- Smashing subject
- Source of nuclear energy
- Physicist's focus
- Smashable thing
- Democritus' unit
- Energy source in a small package
- Molecule piece
- Quarky item?
- Bit that may be split
- It's a little matter
- Nucleus + electrons
- Ant who once teamed with Secret Squirrel
- Certain smasher input
- Certain smasher's target
- It's smaller than a molecule
- A bit smashed?
- Bit to be split
- It's just a little bit
- Tiny bit to split
- Tiny power unit
- Molecular building block
- Basic elemental unit
- Half the alphabet?
- Nuclear component
- Wee bit of physics
- Diminutive superhero (with "The")
- Chemistry class subject
- What 2-Down studied
- Thing smaller than a molecule
- Bomb variety
- Invisible energy source
- Microscopic building block
- Minute energy source
- Sometimes-smashed minuscule thing
- Super ant of cartoons
- Accelerator bit
- Matter bit
- Tiny bit of energy
- C, Ar, B, O or N
- C or O, in carbon monoxide
- It has quarks
- One of three in an ozone molecule
- Particle once modeled as "plum pudding"
- Subject of Niels Bohr's model
- Bit of boron, say
- It might be ionized
- Part of every living thing
- Tiniest amount of titanium
- It has a nucleus
- Quark's particle
- Thing of little matter to physicists?
- Never trust an ___. They make up everything! (classic pun)
- Chemistry particle
- Electron's particle
- Small bit of matter
- Minimal amount of gold or platinum
- Diminutive DC superhero
- Smasher or bomb
- Nucleus + electrons etc.
- ____ smasher
- It's often split
- Minuscule particle
- Carbon 12 e.g.
- Synonym of 14 Across
- Physics class subject
- Chemistry book chapter
- Ion
- Subject of 1 Down's interest
- It may be smashed
- Word coined by Democritus
- Label on the first of two file drawers, often
- Basic biological building block
- Energetic elementary particle?
- Tiny nuclear-energy source
- Home to quarks
- Nuclear energy particle
- Quark's location
- Particle for Niels Bohr
- Particle in a smasher
- Particle of interest to Bohr
- Quark's home
- Basic unit in chem class
- Basic unit in chemistry
- Particle that's Ryan Choi's superhero name
- Muon's place
- Ion, perhaps
- NRC logo item
- Physicist's bit
- Physics class model
- Particle studied in physics
- Particle with a nucleus
- Smallest unit of matter
- Chemistry unit whose size is measured in angstroms
- If an apple were magnified to the size of the Earth, this would be close to the size of an apple
- Molecule part that sounds like a name
- Nucleus's place
- One of three in a carbon dioxide molecule
- Particle with an electron cloud
- Small unit of matter studied by Lise Meitner
- Tiny particle that can form a bond
- More than 99% of one is empty space
- Particle hidden in "roma tomatoes"
- What's split in a fission reaction
- Ball-and-stick model
- Itty-bitty bit of matter
- Particle that contains quarks
- Teeny particle
- Tiny elemental particle
- 19 Basic particle
- Thing to smash
- Bit part
- Bohr study
- Quantum mechanics unit
- Radical member
- An electron cloud surrounds its nucleus
- Little bit of science?
- One of over 5 sextillion in a drop of water
- Site of electrons
- Emitter of photons
- Physics class particle
- Site of a small nucleus
- Bohr model particle
- Split target
- Supercollider projectile
- Element bit
- Minimum amount of an element
- Bond bit
- Participant in a collision
- It has one or more shells
- See 101-Down
- Radical component
- Bohr topic
- Excitable thing
- Chemistry subject
- Element unit
- Emmy statuette part
- Microphysics subject
- What the Emmy statuette woman holds
- Bond holding?
- Its mass is mostly from its nucleus
- Tiny target of smashing
- Element of an element
- Elemental piece
- Object modeled by Bohr
- Physicist's unit
- Physics topic
- Chemistry class topic
- Collider bit
- Bohr focus
- Bohr theory focus
- Unit of iron weighing about 93 yoctograms
- What the Emmy statue's winged woman is holding
- Nickel unit
