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