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