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