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