A) 23 B) 50 C) 60 D) 51
A) 17 B) 3 C) 7 D) 1
A) 9 B) 45 C) 5 D) 103
A) 3 B) 4 C) 33 D) 15
A) Halogens B) Noble Gases C) Transition Metals D) Alkali Metals E) Alkaline Earth Metals
A) 14.007 B) 2 C) 7 D) 14
A) 137 B) 2 C) 56 D) 6
A) 2 B) 7 C) 6 D) 1
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) 42 B) 5 C) 96 D) 6
A) 7 B) 4 C) 2 D) 3
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) neutrons and electrons C) protons and orbits D) protons and electrons
A) Mercury and Thallium B) Carbon and Boron C) Argon and Krypton D) Phosphorus and Silicon
A) atoms are tiny solid spheres B) the atom is a positively charged sphere with electrons embedded in it C) the atom is mostly empty space D) electrons orbit totally randomly around the nucleus
A) nucleus B) region C) period D) group
A) Lithium B) Magnesium C) Chlorine D) Beryllium
A) number of neutrons B) period number C) number of protons D) group number
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) Number of Neutrons C) Period Number D) Group Number
A) Francium B) Manganese C) Nitrogen D) Carbon
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 electrons C) By adding or losing electrons D) by losing protons
A) by adding electrons B) by losing protons C) by adding protons D) by losing electrons
A) by losing protons B) by losing electrons C) by adding electrons D) by adding protons
A) by adding electrons B) by adding or losing neutrons C) by adding protons D) by adding neutrons
A) mass number divided by 2 B) same as the atomic number C) difference between the atomic and mass number D) same as the 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) 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 alkali earth metals B) The alkali metals C) The noble gases D) The halogens E) The transition metals
A) The alkali metals B) The transition metals C) The halogens D) The noble gases
A) 1 B) 8 C) 17 D) 18 E) 4
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) how many electrons the atom has B) how many valence electrons the atom has C) the number of neutrons D) the number of protons
A) Silver B) Mercury C) Sodium D) Iron E) Fluorine
A) Al B) Li C) F D) Au E) H
A) Al B) Cs C) I D) Mg E) Li
A) the number of neutrons B) the number of electrons C) the number of protons
A) Mendeleev B) Bohr C) Lewis D) Newton E) Dalton |