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