A) 23 B) 51 C) 50 D) 60
A) 7 B) 17 C) 3 D) 1
A) 45 B) 5 C) 9 D) 103
A) 33 B) 4 C) 3 D) 15
A) Halogens B) Transition Metals C) Noble Gases D) Alkali Metals E) Alkaline Earth Metals
A) 2 B) 14 C) 14.007 D) 7
A) 137 B) 6 C) 56 D) 2
A) 7 B) 2 C) 6 D) 1
A) Tellurium is a solid metalloid. B) Chlorine is a liquid non-metal. C) Mercury is a solid metal. D) Phosphorus is a non-metal gas.
A) 42 B) 96 C) 5 D) 6
A) 3 B) 4 C) 2 D) 7
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 electrons B) protons and neutrons C) protons and orbits D) neutrons and electrons
A) Mercury and Thallium B) Carbon and Boron C) Argon and Krypton D) Phosphorus and Silicon
A) electrons orbit totally randomly around the nucleus B) the atom is mostly empty space C) atoms are tiny solid spheres D) the atom is a positively charged sphere with electrons embedded in it
A) region B) nucleus C) group D) period
A) Beryllium B) Magnesium C) Lithium D) Chlorine
A) number of neutrons B) group number C) number of protons D) period number
A) the same as the number of electrons B) the mass number minus the atomic number C) greater than the mass number D) the same as the number of energy levels
A) Period Number B) Group Number C) State of Matter D) Number of Neutrons
A) Carbon B) Nitrogen 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 or losing electrons B) by adding electrons C) by losing protons D) by adding protons
A) by losing electrons B) by losing protons C) by adding electrons D) by adding protons
A) by adding electrons B) by losing electrons C) by adding protons D) by losing protons
A) by adding protons B) by adding neutrons C) by adding or losing neutrons D) by adding electrons
A) same as the atomic number B) difference between the atomic and mass number C) same as the mass number D) mass number divided by 2
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) Mg and F B) Na and Li C) B and O D) Hg and C
A) Li and Po B) Mg and Cl C) F and At D) Ba and Ra
A) The halogens B) The alkali metals C) The noble gases D) The transition metals E) The alkali earth metals
A) The alkali metals B) The transition metals C) The halogens D) The noble gases
A) 1 B) 4 C) 17 D) 18 E) 8
A) how many electron levels there are B) how reactive they are C) how many electrons 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) Silver B) Mercury C) Sodium D) Fluorine E) Iron
A) Al B) H C) Au D) Li E) F
A) Mg B) Li C) Cs D) Al E) I
A) the number of protons B) the number of electrons C) the number of neutrons
A) Lewis B) Newton C) Mendeleev D) Dalton E) Bohr |