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