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