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