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