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