A) 23 B) 51 C) 60 D) 50
A) 3 B) 7 C) 1 D) 17
A) 9 B) 103 C) 45 D) 5
A) 33 B) 15 C) 4 D) 3
A) Halogens B) Alkaline Metals C) Noble Gases D) Alkaline Earth Metals
A) 14 B) 2 C) 14.007 D) 7
A) 2 B) 6 C) 137 D) 56
A) 7 B) 6 C) 1 D) 2
A) Phosphorus is a non-metal gas. B) Mercury is a solid metal. C) Tellurium is a solid metalloid. D) Chlorine is a liquid non-metal.
A) 96 B) 42 C) 5 D) 6
A) 7 B) 2 C) 4 D) 3
A) Dalton B) Thomson C) Rutherford D) Bohr
A) Thomson B) Rutherford C) Bohr D) Dalton
A) Rutherford B) Thomson C) Dalton D) Bohr
A) Rutherford B) Thomson C) Dalton D) Bohr
A) Dalton, Thomson, Bohr, Rutherford B) Dalton, Rutherford, Thomson, Bohr C) Bohr, Rutherford, Dalton, Thomson D) Dalton, Thomson, Rutherford, Bohr
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) physical property B) chemical change C) chemical property D) physical change
A) protons and electrons B) protons and neutrons C) protons and orbits D) neutrons and electrons
A) Phosphorus and Silicon B) Carbon and Boron C) Mercury and Thallium D) Argon and Krypton
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 a positively charged sphere with electrons embedded in it C) the atom is mostly empty space D) atoms are tiny solid spheres
A) group B) period C) region D) nucleus
A) Magnesium B) Chlorine C) Lithium D) Beryllium
A) Group Number B) Period Number C) State of Matter D) Number of Neutrons
A) period number B) number of protons C) number of neutrons D) group 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) Number of Neutrons B) Group Number C) State of Matter D) Period Number
A) Francium B) Nitrogen C) Carbon D) Manganese
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. |