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