A) 60 B) 23 C) 51 D) 50
A) 7 B) 17 C) 3 D) 1
A) 5 B) 9 C) 103 D) 45
A) 15 B) 3 C) 4 D) 33
A) Halogens B) Alkaline Earth Metals C) Transition Metals D) Alkali Metals E) Noble Gases
A) 2 B) 14.007 C) 7 D) 14
A) 137 B) 56 C) 2 D) 6
A) 6 B) 2 C) 1 D) 7
A) Tellurium is a solid metalloid. B) Chlorine is a liquid non-metal. C) Phosphorus is a non-metal gas. D) Mercury is a solid metal.
A) 6 B) 96 C) 42 D) 5
A) 4 B) 2 C) 3 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 electrons C) protons and orbits D) protons and neutrons
A) Phosphorus and Silicon B) Argon and Krypton C) Mercury and Thallium D) Carbon and Boron
A) the atom is a positively charged sphere with electrons embedded in it B) the atom is mostly empty space C) electrons orbit totally randomly around the nucleus D) atoms are tiny solid spheres
A) region B) nucleus C) period D) group
A) Magnesium B) Lithium C) Beryllium D) Chlorine
A) number of protons B) number of neutrons C) group number D) period number
A) the same as the number of energy levels B) the same as the number of electrons C) greater than the mass number D) the mass number minus the atomic number
A) Number of Neutrons B) Period Number C) Group Number D) State of Matter
A) Nitrogen B) Manganese C) Francium D) Carbon
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 losing protons D) by adding protons
A) by adding protons B) by losing protons C) by losing electrons D) by adding electrons
A) by adding electrons B) by adding protons C) by losing protons D) by losing electrons
A) by adding neutrons B) by adding or losing neutrons C) by adding electrons D) by adding protons
A) same as the atomic number B) difference between the atomic and mass number C) same as the mass number D) mass number divided by 2
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) B and O B) Na and Li C) Mg and F D) Hg and C
A) Mg and Cl B) Ba and Ra C) F and At D) Li and Po
A) The halogens B) The noble gases C) The alkali earth metals D) The alkali metals E) The transition metals
A) The halogens B) The noble gases C) The transition metals D) The alkali metals
A) 8 B) 1 C) 17 D) 18 E) 4
A) how many electron levels there are B) how reactive they are C) how many protons there are D) how many electrons there are
A) the number of protons B) the number of neutrons C) how many valence electrons the atom has D) how many electrons the atom has
A) Iron B) Sodium C) Fluorine D) Mercury E) Silver
A) Au B) F C) Li D) H E) Al
A) I B) Al C) Cs D) Mg E) Li
A) the number of neutrons B) the number of protons C) the number of electrons
A) Newton B) Lewis C) Mendeleev D) Dalton E) Bohr |