A) 23 B) 60 C) 51 D) 50
A) 3 B) 7 C) 1 D) 17
A) 5 B) 103 C) 9 D) 45
A) 3 B) 33 C) 15 D) 4
A) Alkaline Earth Metals B) Noble Gases C) Alkali Metals D) Transition Metals E) Halogens
A) 14 B) 2 C) 7 D) 14.007
A) 6 B) 56 C) 137 D) 2
A) 6 B) 7 C) 1 D) 2
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) 96 B) 5 C) 6 D) 42
A) 2 B) 7 C) 3 D) 4
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 electrons B) protons and orbits C) protons and neutrons D) neutrons and electrons
A) Carbon and Boron B) Mercury and Thallium C) Phosphorus and Silicon 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) the atom is mostly empty space D) atoms are tiny solid spheres
A) nucleus B) group C) period D) region
A) Chlorine B) Magnesium C) Lithium D) Beryllium
A) group number B) number of protons C) period number D) number of neutrons
A) greater than the mass number B) the same as the number of electrons 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) Francium B) Carbon C) Nitrogen D) Manganese
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 adding or losing electrons C) by adding protons D) by losing protons
A) by losing protons B) by losing electrons C) by adding electrons D) by adding protons
A) by losing electrons B) by adding protons C) by losing protons D) by adding electrons
A) by adding protons B) by adding or losing neutrons C) by adding electrons D) by adding neutrons
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 same as the number of neutrons B) the difference between the mass and atomic number C) the same as the atomic number D) the same as the mass number
A) Hg and C B) Mg and F C) Na and Li D) B and O
A) Li and Po B) Ba and Ra C) F and At D) Mg and Cl
A) The noble gases B) The halogens C) The alkali earth metals D) The alkali metals E) The transition metals
A) The transition metals B) The halogens C) The noble gases D) The alkali metals
A) 8 B) 1 C) 18 D) 4 E) 17
A) how many protons there are B) how many electrons there are C) how reactive they are D) how many electron levels there are
A) how many electrons the atom has B) the number of protons C) the number of neutrons D) how many valence electrons the atom has
A) Fluorine B) Sodium C) Mercury D) Silver E) Iron
A) Al B) F C) Li D) H E) Au
A) Al B) Mg C) Li D) Cs E) I
A) the number of protons B) the number of neutrons C) the number of electrons
A) Bohr B) Dalton C) Newton D) Lewis E) Mendeleev |