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