A) 50 B) 60 C) 51 D) 23
A) 7 B) 17 C) 1 D) 3
A) 45 B) 103 C) 9 D) 5
A) 15 B) 4 C) 33 D) 3
A) Halogens B) Noble Gases C) Alkaline Earth Metals D) Alkaline Metals
A) 14 B) 14.007 C) 7 D) 2
A) 2 B) 56 C) 137 D) 6
A) 6 B) 1 C) 2 D) 7
A) Tellurium is a solid metalloid. B) Mercury is a solid metal. C) Phosphorus is a non-metal gas. D) Chlorine is a liquid non-metal.
A) 42 B) 96 C) 5 D) 6
A) 2 B) 7 C) 3 D) 4
A) Dalton B) Thomson C) Bohr D) Rutherford
A) Dalton B) Rutherford C) Bohr D) Thomson
A) Rutherford B) Dalton C) Thomson D) Bohr
A) Rutherford B) Dalton C) Bohr D) Thomson
A) Dalton, Rutherford, Thomson, Bohr B) Bohr, Rutherford, Dalton, Thomson C) Dalton, Thomson, Bohr, Rutherford D) Dalton, Thomson, Rutherford, Bohr
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 change C) chemical change D) physical property
A) protons and orbits B) neutrons and electrons C) protons and electrons D) protons and neutrons
A) Carbon and Boron B) Mercury and Thallium C) Argon and Krypton D) Phosphorus and Silicon
A) Rutherford's Model B) Dalton's Model C) Electron Cloud D) Bohr's Model E) Thomson's Model
A) atoms are tiny solid spheres B) the atom is a positively charged sphere with electrons embedded in it C) electrons orbit totally randomly around the nucleus D) the atom is mostly empty space
A) nucleus B) region C) period D) group
A) Beryllium B) Chlorine C) Lithium D) Magnesium
A) Number of Neutrons B) Period Number C) Group Number D) State of Matter
A) period number B) number of neutrons C) group number D) number of protons
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) Number of Neutrons B) State of Matter C) Period Number D) Group Number
A) Nitrogen B) Carbon C) Manganese D) Francium
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. |