A) 23 B) 51 C) 50 D) 60
A) 3 B) 17 C) 1 D) 7
A) 103 B) 5 C) 45 D) 9
A) 15 B) 33 C) 4 D) 3
A) Halogens B) Alkaline Earth Metals C) Noble Gases D) Alkaline Metals
A) 14 B) 14.007 C) 2 D) 7
A) 2 B) 6 C) 56 D) 137
A) 6 B) 2 C) 1 D) 7
A) Tellurium is a solid metalloid. B) Mercury is a solid metal. C) Phosphorus is a non-metal gas. D) Chlorine is a liquid non-metal.
A) 42 B) 96 C) 6 D) 5
A) 2 B) 4 C) 3 D) 7
A) Rutherford B) Bohr C) Thomson D) Dalton
A) Thomson B) Rutherford C) Bohr D) Dalton
A) Bohr B) Dalton C) Rutherford D) Thomson
A) Thomson B) Bohr C) Dalton D) Rutherford
A) Dalton, Thomson, Rutherford, Bohr B) Dalton, Thomson, Bohr, Rutherford C) Bohr, Rutherford, Dalton, Thomson D) Dalton, Rutherford, Thomson, Bohr
A) proton = positive, electron = negative, neutron = uncharged B) proton = negative, electron = positive, neutron = no charge C) proton = positive, neutron = negative, electron = no charge D) proton = positive, electron = neutral, neutron = negative
A) chemical property B) physical property C) chemical change D) physical change
A) neutrons and electrons B) protons and electrons C) protons and neutrons D) protons and orbits
A) Mercury and Thallium B) Carbon and Boron C) Phosphorus and Silicon D) Argon and Krypton
A) Bohr's Model B) Rutherford's Model C) Dalton's Model D) Electron Cloud E) Thomson'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) nucleus B) group C) period D) region
A) Magnesium B) Chlorine C) Beryllium D) Lithium
A) Period Number B) Number of Neutrons C) State of Matter D) Group Number
A) group number B) period number C) number of neutrons 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) State of Matter B) Group Number C) Number of Neutrons D) Period Number
A) Carbon B) Nitrogen C) Francium D) Manganese
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. |