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