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