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