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