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