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