A) 23 B) 51 C) 60 D) 50
A) 3 B) 1 C) 17 D) 7
A) 103 B) 5 C) 9 D) 45
A) 3 B) 4 C) 33 D) 15
A) Alkaline Earth Metals B) Noble Gases C) Halogens D) Alkaline Metals
A) 14 B) 14.007 C) 7 D) 2
A) 2 B) 137 C) 56 D) 6
A) 1 B) 2 C) 7 D) 6
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) 6 B) 42 C) 5 D) 96
A) 2 B) 7 C) 3 D) 4
A) Bohr B) Dalton C) Rutherford D) Thomson
A) Dalton B) Thomson C) Bohr D) Rutherford
A) Rutherford B) Thomson C) Bohr D) Dalton
A) Rutherford B) Dalton C) Bohr D) Thomson
A) Dalton, Thomson, Rutherford, Bohr B) Dalton, Rutherford, Thomson, Bohr C) Bohr, Rutherford, Dalton, Thomson D) Dalton, Thomson, Bohr, Rutherford
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) physical change B) chemical change C) physical property D) chemical property
A) protons and electrons B) protons and orbits C) protons and neutrons D) neutrons and electrons
A) Argon and Krypton B) Phosphorus and Silicon C) Mercury and Thallium D) Carbon and Boron
A) Dalton's Model B) Bohr's Model C) Thomson's Model D) Rutherford's Model E) Electron Cloud
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) group B) region C) nucleus D) period
A) Beryllium B) Lithium C) Magnesium D) Chlorine
A) State of Matter B) Number of Neutrons C) Period Number D) Group Number
A) group number B) number of neutrons C) period number D) number of protons
A) the mass number minus the atomic number B) the same as the number of electrons C) the same as the number of energy levels D) greater than the mass number
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. |