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