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