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