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