A) 23 B) 50 C) 60 D) 51
A) 1 B) 17 C) 7 D) 3
A) 5 B) 9 C) 45 D) 103
A) 33 B) 3 C) 4 D) 15
A) Alkaline Earth Metals B) Halogens C) Noble Gases D) Alkaline Metals
A) 14.007 B) 2 C) 14 D) 7
A) 137 B) 2 C) 56 D) 6
A) 2 B) 6 C) 7 D) 1
A) Mercury is a solid metal. B) Tellurium is a solid metalloid. C) Chlorine is a liquid non-metal. D) Phosphorus is a non-metal gas.
A) 5 B) 42 C) 96 D) 6
A) 4 B) 2 C) 3 D) 7
A) Rutherford B) Thomson C) Dalton D) Bohr
A) Dalton B) Rutherford C) Thomson D) Bohr
A) Rutherford B) Dalton C) Thomson D) Bohr
A) Dalton B) Bohr C) Rutherford D) Thomson
A) Dalton, Thomson, Rutherford, Bohr B) Dalton, Rutherford, Thomson, Bohr C) Dalton, Thomson, Bohr, Rutherford D) Bohr, Rutherford, Dalton, Thomson
A) proton = positive, electron = negative, neutron = uncharged B) proton = negative, electron = positive, neutron = no charge C) proton = positive, neutron = negative, electron = no charge D) proton = positive, electron = neutral, neutron = negative
A) chemical change B) physical change C) chemical property D) physical property
A) protons and orbits B) neutrons and electrons C) protons and electrons D) protons and neutrons
A) Mercury and Thallium B) Argon and Krypton C) Phosphorus and Silicon D) Carbon and Boron
A) Rutherford's Model B) Electron Cloud C) Dalton's Model D) Bohr's Model E) Thomson's Model
A) electrons orbit totally randomly around the nucleus B) atoms are tiny solid spheres C) the atom is mostly empty space D) the atom is a positively charged sphere with electrons embedded in it
A) nucleus B) period C) region D) group
A) Magnesium B) Chlorine C) Beryllium D) Lithium
A) Number of Neutrons B) Period Number C) Group Number D) State of Matter
A) period number B) group number C) number of protons D) number of neutrons
A) the same as the number of energy levels B) the mass number minus the atomic number C) greater than the mass number D) the same as the number of electrons
A) Period Number B) Number of Neutrons C) Group Number D) State of Matter
A) Nitrogen B) Manganese C) Francium D) Carbon
A) Yes, some Carbon atoms have 6 protons, some have 7 protons. B) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity. |