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