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