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