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