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