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