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