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