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