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