A) 23 B) 50 C) 51 D) 60
A) 3 B) 7 C) 1 D) 17
A) 5 B) 9 C) 45 D) 103
A) 33 B) 3 C) 15 D) 4
A) Noble Gases B) Alkaline Metals C) Alkaline Earth Metals D) Halogens
A) 14.007 B) 7 C) 2 D) 14
A) 6 B) 137 C) 56 D) 2
A) 6 B) 2 C) 7 D) 1
A) Chlorine is a liquid non-metal. B) Tellurium is a solid metalloid. C) Mercury is a solid metal. D) Phosphorus is a non-metal gas.
A) 96 B) 42 C) 5 D) 6
A) 3 B) 7 C) 2 D) 4
A) Bohr B) Thomson C) Rutherford D) Dalton
A) Thomson B) Bohr C) Rutherford D) Dalton
A) Rutherford B) Thomson C) Dalton D) Bohr
A) Rutherford B) Dalton C) Thomson D) Bohr
A) Dalton, Thomson, Bohr, Rutherford B) Dalton, Thomson, Rutherford, Bohr C) Dalton, Rutherford, Thomson, Bohr D) Bohr, Rutherford, Dalton, Thomson
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) physical change B) chemical change C) physical property D) chemical property
A) protons and orbits B) neutrons and electrons C) protons and electrons D) protons and neutrons
A) Mercury and Thallium B) Argon and Krypton C) Phosphorus and Silicon D) Carbon and Boron
A) Rutherford's Model B) Dalton's Model C) Bohr's Model D) Electron Cloud E) Thomson's Model
A) the atom is mostly empty space B) atoms are tiny solid spheres C) the atom is a positively charged sphere with electrons embedded in it D) electrons orbit totally randomly around the nucleus
A) group B) region C) nucleus D) period
A) Chlorine B) Beryllium C) Lithium D) Magnesium
A) Group Number B) Number of Neutrons C) State of Matter D) Period Number
A) group number B) number of protons C) period number D) number of neutrons
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) Manganese C) Carbon 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. |