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