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