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