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