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