A) 23 B) 50 C) 51 D) 60
A) 1 B) 17 C) 3 D) 7
A) 5 B) 9 C) 45 D) 103
A) 33 B) 15 C) 4 D) 3
A) Halogens B) Noble Gases C) Transition Metals D) Alkali Metals E) Alkaline Earth Metals
A) 7 B) 14 C) 14.007 D) 2
A) 6 B) 137 C) 2 D) 56
A) 1 B) 6 C) 2 D) 7
A) Mercury is a solid metal. B) Phosphorus is a non-metal gas. C) Chlorine is a liquid non-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/neutral, neutron/- B) proton/-, electron/+, neutron/no charge C) proton/+, neutron/-, electron/no charge D) proton/+, electron/-, neutron/uncharged
A) neutrons and electrons B) protons and electrons C) protons and orbits 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) 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) group B) region C) nucleus D) period
A) Magnesium B) Lithium C) Beryllium D) Chlorine
A) number of neutrons B) period number C) group 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 protons B) by losing protons C) By adding or losing electrons D) by adding electrons
A) by adding protons B) by losing electrons C) by adding electrons D) by losing protons
A) by losing protons B) by adding protons C) by losing electrons D) by adding electrons
A) by adding or losing neutrons B) by adding neutrons C) by adding electrons D) by adding protons
A) same as the mass number B) mass number divided by 2 C) same as the atomic number D) difference between the atomic and mass number
A) the same as the atomic number B) the same as the mass number C) the same as the number of neutrons D) the difference between the mass and atomic number
A) B and O B) Mg and F C) Na and Li D) Hg and C
A) Li and Po B) Mg and Cl C) F and At D) Ba and Ra
A) The transition metals B) The halogens C) The alkali earth metals D) The alkali metals E) The noble gases
A) The halogens B) The noble gases C) The transition metals D) The alkali metals
A) 17 B) 8 C) 18 D) 4 E) 1
A) how many electron levels there are B) how reactive they are C) how many protons there are D) how many electrons there are
A) how many electrons the atom has B) the number of neutrons C) how many valence electrons the atom has D) the number of protons
A) Sodium B) Mercury C) Fluorine D) Iron E) Silver
A) Al B) Li C) H D) Au E) F
A) Al B) Mg C) Li D) Cs E) I
A) the number of neutrons B) the number of electrons C) the number of protons
A) Bohr B) Mendeleev C) Dalton D) Newton E) Lewis |