A) 60 B) 50 C) 23 D) 51
A) 17 B) 7 C) 1 D) 3
A) 45 B) 103 C) 9 D) 5
A) 15 B) 4 C) 33 D) 3
A) Transition Metals B) Alkaline Earth Metals C) Noble Gases D) Alkali Metals E) Halogens
A) 14.007 B) 7 C) 2 D) 14
A) 137 B) 56 C) 2 D) 6
A) 6 B) 2 C) 1 D) 7
A) Tellurium is a solid metalloid. B) Phosphorus is a non-metal gas. C) Mercury is a solid metal. D) Chlorine is a liquid non-metal.
A) 6 B) 96 C) 42 D) 5
A) 2 B) 7 C) 3 D) 4
A) proton/-, electron/+, neutron/no charge B) proton/+, electron/neutral, neutron/- C) proton/+, neutron/-, electron/no charge D) proton/+, electron/-, neutron/uncharged
A) neutrons and electrons B) protons and orbits C) protons and neutrons D) protons and electrons
A) Argon and Krypton B) Carbon and Boron C) Phosphorus and Silicon D) Mercury and Thallium
A) atoms are tiny solid spheres B) electrons orbit totally randomly around the nucleus C) the atom is a positively charged sphere with electrons embedded in it D) the atom is mostly empty space
A) period B) nucleus C) region D) group
A) Beryllium B) Magnesium C) Chlorine D) Lithium
A) number of protons B) number of neutrons C) period number D) group number
A) the same as the number of electrons B) the same as the number of energy levels C) the mass number minus the atomic number D) greater than the mass number
A) Number of Neutrons B) Period Number C) Group Number D) State of Matter
A) Manganese B) Nitrogen C) Carbon D) Francium
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.
A) by adding protons B) by adding electrons C) By adding or losing electrons D) by losing protons
A) by losing protons B) by losing electrons C) by adding electrons D) by adding protons
A) by losing protons B) by adding electrons C) by losing electrons D) by adding protons
A) by adding electrons B) by adding protons C) by adding neutrons D) by adding or losing neutrons
A) mass number divided by 2 B) same as the mass number C) difference between the atomic and mass number D) same as the atomic number
A) the difference between the mass and atomic number B) the same as the atomic number C) the same as the mass number D) the same as the number of neutrons
A) Mg and F B) Na and Li C) B and O D) Hg and C
A) Mg and Cl B) Li and Po C) F and At D) Ba and Ra
A) The alkali metals B) The halogens C) The transition metals D) The noble gases E) The alkali earth metals
A) The transition metals B) The alkali metals C) The halogens D) The noble gases
A) 8 B) 1 C) 4 D) 17 E) 18
A) how many protons there are B) how many electron levels there are C) how many electrons there are D) how reactive they are
A) the number of neutrons B) how many electrons the atom has C) how many valence electrons the atom has D) the number of protons
A) Silver B) Mercury C) Sodium D) Iron E) Fluorine
A) H B) F C) Al D) Au E) Li
A) Al B) Cs C) I D) Mg E) Li
A) the number of electrons B) the number of protons C) the number of neutrons
A) Newton B) Bohr C) Mendeleev D) Dalton E) Lewis |