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