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