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