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