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