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