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