A) Dalton B) Rutherford C) Thomson D) Bohr
A) Electron B) Neutron C) Proton D) Quark
A) Protons and electrons B) Protons and neutrons C) Neutrons and electrons D) Electrons only
A) Quark B) Neutron C) Electron D) Proton
A) Rutherford’s model B) Dalton’s model C) Bohr’s model D) Quantum model
A) Thomson B) Einstein C) Dalton D) Bohr
A) No charge B) Neutral C) Positive D) Negative
A) Number of neutrons B) Number of isotopes C) Mass number D) Number of protons
A) Molecule B) Nucleus C) Ion D) Atom
A) Dalton’s model B) Thomson’s model C) Bohr’s model D) Rutherford’s model
A) Electron B) Proton C) Neutron D) Positron
A) Oxygen B) Ozone C) Osmium D) Oxide
A) 8 B) 14 C) 6 D) 12
A) Thomson B) Schrödinger C) Bohr D) Dalton
A) Protons < Electrons B) None of these C) Protons = Electrons D) Protons > Electrons
A) Nucleus B) Core C) Shell D) Orbit
A) Electron B) Positron C) Neutron D) Proton
A) In the electron cloud B) Inside the nucleus C) Between protons D) Inside neutrons
A) Molecule B) Neutron C) Proton D) Electron
A) Cell B) Molecule C) Atom D) Nucleus
A) Dalton B) Einstein C) Democritus D) Aristotle
A) 11 B) 13 C) 10 D) 12
A) FALSE B) TRUE
A) TRUE B) FALSE
A) FALSE B) TRUE
A) DISAGREE B) AGREE
A) AGREE B) DISAGREE
A) Democritus B) Thomson C) Aristotle D) Dalton
A) Aristotle B) Thomson C) Democritus D) Dalton
A) Dalton B) Democritus C) Rutherford D) Thomson
A) Schrodinger B) Hantaro C) Proust D) Rutherford
A) tau neutrino B) strange C) gluon D) down
A) bottom B) electron neutrino C) top D) photon
A) W boson B) Muon neutrino C) HIggs boson D) Up
A) quarks B) neutron C) proton D) electron
A) Atoms are mostly empty space B) Most particles bounced back C) Alpha particles passed through foil D) All of the above
A) atoms from a variety of elements combine to form an element in specific ration B) atoms of a certain element exhibit distinct features that distinguish them from atoms of any other element. C) atoms of the same type, each with a consistent mass, make up an element. D) small building blocks called cells make up matter. Atoms are the smallest building blocks of elements and are capable of participating in chemical reactions.
A) 10 B) 12 C) 13 D) 11
A) 8 B) 9 C) 10 D) 20
A) Fluorine B) Oxygen C) Sodium D) Neon
A) Quark B) Proton C) Neutron D) Electron
A) Boron B) Hydrogen C) Beryllium D) Lithium
A) Proton (+), Electron (0), Neutron (–) B) Proton (0), Neutron (+), Electron (–) C) Proton (+), Neutron (0), Electron (–) D) Proton (–), Neutron (+), Electron (0)
A) 18 B) 8 C) 32 D) 16
A) Valence electrons B) Atomic mass C) Number of neutrons D) Atomic number
A) Quantum mechanical model B) Thomson C) Bohr D) Dalton
A) Old theories were incorrect B) New evidence supports better models C) Elements stopped reacting D) Atoms changed structure
A) Bohr claimed atoms were indivisible B) Bohr placed electrons in energy levels C) Bohr said electrons were in the nucleus D) Bohr ignored the nucleus
A) Incorrect, because electrons move in regions of probability. B) Correct, as Bohr proved this model. C) Correct, because electrons never change orbits. D) Correct, because electrons have fixed paths.
A) Student A, because protons determine atomic number. B) Student B, because electrons change easily. C) Both are correct since both are charged. D) Neither, because neutrons define the element. |