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