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