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