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