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