A) 60 B) 23 C) 50 D) 51
A) 3 B) 7 C) 17 D) 1
A) 103 B) 45 C) 9 D) 5
A) 4 B) 3 C) 33 D) 15
A) Halogens B) Alkaline Earth Metals C) Noble Gases D) Alkaline Metals
A) 14.007 B) 2 C) 14 D) 7
A) 6 B) 56 C) 137 D) 2
A) 6 B) 1 C) 2 D) 7
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) 5 B) 42 C) 96 D) 6
A) 2 B) 3 C) 4 D) 7
A) Dalton B) Bohr C) Thomson D) Rutherford
A) Bohr B) Thomson C) Rutherford D) Dalton
A) Dalton B) Bohr C) Rutherford D) Thomson
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 = positive, electron = neutral, neutron = negative B) proton = positive, neutron = negative, electron = no charge C) proton = negative, electron = positive, neutron = no charge D) proton = positive, electron = negative, neutron = uncharged
A) chemical change B) chemical property C) physical property D) physical change
A) protons and orbits B) neutrons and electrons C) protons and electrons D) protons and neutrons
A) Mercury and Thallium B) Phosphorus and Silicon C) Carbon and Boron D) Argon and Krypton
A) Bohr's Model B) Thomson's Model C) Dalton's Model D) Electron Cloud E) Rutherford'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) period C) region D) group
A) Lithium B) Beryllium C) Chlorine D) Magnesium
A) Group Number B) Number of Neutrons C) Period Number D) State of Matter
A) number of neutrons B) number of protons C) period number D) group number
A) the mass number minus the atomic number B) the same as the number of energy levels C) greater than the mass number D) the same as the number of electrons
A) Period Number B) State of Matter C) Number of Neutrons D) Group Number
A) Carbon B) Francium C) Nitrogen D) Manganese
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. |