A) 60 B) 50 C) 51 D) 23
A) 1 B) 3 C) 17 D) 7
A) 5 B) 103 C) 9 D) 45
A) 4 B) 3 C) 15 D) 33
A) Transition Metals B) Alkali Metals C) Alkaline Earth Metals D) Noble Gases E) Halogens
A) 14.007 B) 2 C) 7 D) 14
A) 137 B) 56 C) 6 D) 2
A) 7 B) 1 C) 6 D) 2
A) Tellurium is a solid metalloid. B) Chlorine is a liquid non-metal. C) Phosphorus is a non-metal gas. D) Mercury is a solid metal.
A) 96 B) 6 C) 42 D) 5
A) 2 B) 3 C) 7 D) 4
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 orbits B) protons and electrons C) neutrons and electrons D) protons and neutrons
A) Phosphorus and Silicon B) Carbon and Boron C) Mercury and Thallium D) Argon and Krypton
A) atoms are tiny solid spheres B) the atom is a positively charged sphere with electrons embedded in it C) electrons orbit totally randomly around the nucleus D) the atom is mostly empty space
A) nucleus B) group C) period D) region
A) Lithium B) Magnesium C) Chlorine D) Beryllium
A) number of protons B) number of neutrons C) group number D) period number
A) greater than the mass number B) the mass number minus the atomic number C) the same as the number of energy levels D) the same as the number of electrons
A) Group Number B) Number of Neutrons C) Period Number D) State of Matter
A) Francium B) Nitrogen C) Manganese D) Carbon
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 electrons D) by adding protons
A) by losing electrons B) by adding protons C) by losing protons D) by adding electrons
A) by losing protons B) by adding protons C) by adding electrons D) by losing electrons
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) 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 atomic number C) the difference between the mass and atomic number D) the same as the mass number
A) Na and Li B) Mg and F C) B and O D) Hg and C
A) F and At B) Li and Po C) Mg and Cl D) Ba and Ra
A) The transition metals B) The noble gases C) The alkali earth metals D) The alkali metals E) The halogens
A) The alkali metals B) The transition metals C) The noble gases D) The halogens
A) 1 B) 8 C) 18 D) 4 E) 17
A) how many electrons there are B) how many electron levels there are C) how many protons there are D) how reactive they are
A) the number of protons B) how many electrons the atom has C) the number of neutrons D) how many valence electrons the atom has
A) Silver B) Fluorine C) Mercury D) Iron E) Sodium
A) H B) Al C) Au D) F E) Li
A) Li B) Cs C) Al D) Mg E) I
A) the number of electrons B) the number of protons C) the number of neutrons
A) Newton B) Mendeleev C) Dalton D) Lewis E) Bohr |