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