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