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