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