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