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