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