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