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