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