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