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