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