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