Atomic Theory Crossword

a pre-socratic philosopher who coined the term atomos which in ancient greek means unbreakable, who also belived that parts of matter were unbreakable
an English scientist who experimented mostly on gases. Boyle discovered through experimentation that gas exists and is made of something (atoms). His experiments also led to the discovery of Boyle’s Law, which describes an inverse relationship between volume and pressure
an English scientist who proposed a mechanical universe that contained small particles in motion (atoms)
an English chemist, physicist, and meteorologist, who proposed an “atomic theory” with spherical solid atoms based on the properties mass
a wealthy French scienctist during the French Revolution who proved that matter is conserved in chemical reactions; thus, the creation and recognition of the law of conservation of mass, discovered that water is not an element and was a creator of the metric system
a French chemist who proved that the quantities of any pure chemical compound’s elements were not dependent on the source. His discovery became known as Proust’s law or Law of Definite Proportions,this law was discovered by experimenting with metals that react with oxygen and sulfur
an Italian physicist who was among the first atomists to recognize that elements existed as molecules as well as individual atoms.studied the work of John Dalton and Joseph Gay-Lussac and discovered that gas reactions of equal volumes and same temperature and pressure contain the same amount of molecules, now known as Avogadro's Law.
an English biologist who discovered Brownian Motion, the jerking movement of microscopic particles. This movement was caused by the movement of molecules of the fluid they were suspended in.
an English physicist who proposed an atomic model called the “plum pudding model”,discovered the electron when attempting to prove that cathode rays were caused by charged particles he originally called corpuscles. Through experimentation, he determined that electrons were present in all matter.
a New Zealand physicist who discovered the proton, atomic nucleus, and the element radon, also proposed the Rutherford Model of the atom, and further contributed to atomic theory, coining terms like alpha, beta, and gamma rays.
two scientists who conducted a series of experiments that concluded that the nucleus of an atom was positively charged, this investigated the scattering of alpha particles realizing that if viewed at large angles it could be seen that alpha particles were bouncing back toward their source.
a Danish physicist who developed the modern model of the atom, introduced the electron in it’s proper place, orbiting around the nucleus, later won the Nobel Peace Prize for his work in Nuclear Physics
an Austrian physicist who developed the electron cloud model. His model proposed a dense nucleus and outer cloud of electrons and used math and used quantum mechanics to determine the positions of the electrons
pioneered the scientific method.
See Figure 1; could not account for the formation of ions, and did not account for protons, electrons, and neutrons
used electrolysis to break down compounds and discover seven new elements
discovered the specific laws of chemical electrolysis and discovered electro-magnetic induction
invented the canal ray tube, a tube that examined the flow of positively charged particles, and found that positively charged particles flow the opposite direction of negatively charged particles
discovered the electromagnetic wave called x-rays that could pass through solid objects
accidentally discovered radiation when he left uranium crystals in a drawer with an undeveloped photograph, which suggested that some materials continuously emit energy
See Figure 2
found that beams of electrons were able to pass through a sheet of aluminum foil with almost no deflection, and correctly concluded that atoms are mostly empty space
calculated atoms too small, didn't account for formation of ions, but account for different atomic masses and internal structure.
presented the first atomic model that most closely resembles the accepted model
See Figure 3; accounted for everything, but is unstable
See Figure 4; accounted for different atomic masses, and internal structure
See Figure 5; accounted for everything but stability
discovered the neutron by bombarding Beryllium with beta radiation, which led to nuclear fission released a neutron
See Figure 6; accounted for all three basic subatomic particles
See Figure 7; the modern model of the atom, that is most widely accepted, is stable and accounts for all properties of the atom